Tropical Cyclones
[Index] | Tropical Cyclone BINGIZA : JTWC Advisories |
Season 2010-2011 Summaries (Operational Data): [AU] [SIO] [SPAC] [SH] | |
---> Tropical Cyclone BINGIZA Track Map and Data |
WTXS21 PGTW 20110209 14:30z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 120 NM EITHER SIDE OF A LINE FROM 13.6S 56.0E TO 15.5S 53.1E WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IMAGERY AT 091400Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 13.9S 55.1E. THE SYSTEM IS MOVING WEST-SOUTHWESTWARD AT 06 KNOTS. 2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 13.9S 55.8E IS NOW LOCATED NEAR 13.9S 55.1E, APPROXIMATELY 435 NM NORTH OF LA REUNION. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A CONSOLIDATING LOW-LEVEL CIRCULATION CENTER (LLCC) WITH A LARGE CLUSTER OF DEEP CONVECTION OVER THE CENTER AND IMPROVED CONVECTIVE BANDING. A 091014Z AMSR-E 36H IMAGE INDICATES A WELL-DEFINED, TIGHTLY-WRAPPED LLCC WITH DEEP CONVECTIVE BANDING WRAPPING FROM THE WEST INTO THE NORTH QUADRANT. A 090558Z ASCAT IMAGE SHOWED NUMEROUS 25-30 KNOT WINDS NEAR THE CENTER. UPPER LEVEL ANALYSIS INDICATES THAT THE SYSTEM IS LOCATED JUST TO THE NORTHWEST OF A DEVELOPING ANTICYCLONE WITH WEAK, EASTERLY VERTICAL WIND SHEAR. SUBSEQUENTLY, OVERALL OUTFLOW HAS IMPROVED WITH THE EXCEPTION OF THE EAST QUADRANT. OVER THE PAST 12 HOURS, POLEWARD OUTFLOW HAS INCREASED DUE TO A MIDLATITUDE SHORTWAVE TROUGH POSITIONED SOUTH OF THE SYSTEM, WHILE EQUATORWARD OUTFLOW REMAINS VIGOROUS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS GOOD. 3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 101430Z.// ========================================================================= WTXS31 PGTW 20110209 21:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 001// REF/A/NAVMARFCSTCEN PEARL HARBOR HI/091421Z FEB 11// AMPN/REF A IS TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 001 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 091800Z --- NEAR 13.6S 54.8E MOVEMENT PAST SIX HOURS - 315 DEGREES AT 04 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT REPEAT POSIT: 13.6S 54.8E --- FORECASTS: 12 HRS, VALID AT: 100600Z --- 13.5S 54.6E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 225 DEG/ 01 KTS --- 24 HRS, VALID AT: 101800Z --- 13.6S 54.5E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 225 DEG/ 01 KTS --- 36 HRS, VALID AT: 110600Z --- 13.7S 54.4E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 225 DEG/ 01 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 111800Z --- 13.8S 54.3E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 220 DEG/ 02 KTS --- 72 HRS, VALID AT: 121800Z --- 14.3S 53.9E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 130 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 115 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 220 DEG/ 03 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 131800Z --- 15.2S 53.1E MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 230 DEG/ 06 KTS --- 120 HRS, VALID AT: 141800Z --- 16.8S 51.2E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY --- REMARKS: 092100Z POSITION NEAR 13.6S 54.7E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 460 NM NORTH OF LA REUNION, HAS TRACKED NORTHWEST AT 04 KNOTS DURING THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY INDICATES CONVECTION IS CONSOLIDATING AND INTENSIFYING. A 091612Z SSMI MICROWAVE IMAGE REVEALS DEEP CONVECTION THROUGHOUT THE ENTIRE WESTERN SEMI-CIRCLE. ANIMATED WATER VAPOR IMAGERY SHOWS A DEVELOPING POLEWARD OUTFLOW CHANNEL DUE TO THE APPROACH OF A MID-LATITUDE TROUGH FROM THE SOUTHWEST. ALTHOUGH SOME SUPPRESSION OF OUTFLOW IS OCCURRING OVER THE EASTERN SEMI-CIRCLE, OUTFLOW IS WELL-DEVELOPED ON THE EQUATORWARD SIDE OF THE SYSTEM. TC 13S IS DRIFTING SLOWLY WESTWARD UNDER WEAK STEERING FLOW. IT IS EXPECTED TO MEANDER AND INTENSIFY THROUGH TAU 48 DUE TO A WEAK STEERING ENVIRONMENT AND FAVORABLE DYNAMICS ALOFT. SATELLITE-DERIVED SEA SURFACE TEMPERATURES IN THE REGION ARE FAVORABLE FOR DEVELOPMENT, RANGING FROM 29 TO 31 DEGREES CELSIUS. MODEL TRACK GUIDANCE IS IN POOR AGREEMENT DUE TO THE WEAK STEERING ENVIRONMENT. THE FORECAST TRACK IS CLOSE TO MODEL CONSENSUS WITH SOME WEIGHTING TOWARDS THE NOGAPS AND GFDN SOLUTIONS. THE INTENSITY FORECAST IS AT THE HIGHER END OF THE MODEL GUIDANCE BECAUSE ENVIRONMENTAL CONDITIONS ARE CONDUCIVE FOR RAPID STRENGTHENING. A DEEP SHORT WAVE TROUGH IS EXPECTED TO MOVE OVER MADAGASCAR BETWEEN TAU 60 AND TAU 84 WILL AGAIN STRENGTHEN POLEWARD OUTFLOW AND INCREASE THE POSSIBILITY FOR RAPID INTENSIFICATION OF TC 13S. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 091800Z IS 12 FEET. NEXT WARNINGS AT 100900Z AND 102100Z. THIS WARNING SUPERSEDES AND CANCELS REF A, NAVMARFCSTCEN 091421Z FEB 11 TROPICAL CYCLONE FORMATION ALERT (WTXS21 PGTW 091430).// ========================================================================= WTXS31 PGTW 20110210 09:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 002// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 002 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 100600Z --- NEAR 13.6S 54.4E MOVEMENT PAST SIX HOURS - 315 DEGREES AT 01 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT REPEAT POSIT: 13.6S 54.4E --- FORECASTS: 12 HRS, VALID AT: 101800Z --- 13.5S 54.2E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 270 DEG/ 01 KTS --- 24 HRS, VALID AT: 110600Z --- 13.5S 54.0E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 225 DEG/ 01 KTS --- 36 HRS, VALID AT: 111800Z --- 13.6S 53.9E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 225 DEG/ 01 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 120600Z --- 13.7S 53.8E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 230 DEG/ 01 KTS --- 72 HRS, VALID AT: 130600Z --- 14.0S 53.4E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 225 DEG/ 06 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 140600Z --- 15.8S 51.6E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 220 DEG/ 06 KTS --- 120 HRS, VALID AT: 150600Z --- 17.7S 49.9E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY --- REMARKS: 100900Z POSITION NEAR 13.6S 54.3E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 460 NM NORTH OF LA REUNION, HAS REMAINED QUASI-STATIONARY DURING THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS A WELL-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) AND A 100316Z SSMIS MICROWAVE IMAGE DEPICTS THE MAJORITY OF THE DEEP CONVECTION WRAPPING AROUND THE NORTHERN PERIPHERY OF THE LLCC. THE INITIAL POSITION IS BASED ON THE AFOREMENTIONED IMAGERY WITH FAIR CONFIDENCE. THE INITIAL INTENSITY IS BASED ON PGTW, KNES, AND FMEE DVORAK ESTIMATES OF 45 KNOTS. UPPER LEVEL ANALYSIS INDICATES THE SYSTEM IS LOCATED IN AN AREA OF LOW VERTICAL WIND SHEAR AND GOOD DIVERGENCE ALOFT. EQUATORWARD OUTFLOW REMAINS FAVORABLE, HOWEVER POLEWARD OUTFLOW HAS WEAKENED. TC 13S IS CURRENTLY QUASI-STATIONARY UNDER THE INFLUENCE OF A WEAK STEERING ENVIRONMENT, WHICH SHOULD REMAIN FOR THE NEXT 48 TO 72 HOURS. A SUBTROPICAL STEERING RIDGE WILL THEN BEGIN TO RE- BUILD TO THE SOUTH AS AN UPPER LEVEL, MID-LATITUDE TROUGH CURRENTLY LOCATED TO THE SOUTH TRACKS FARTHER EASTWARD. TC BINGIZA IS EXPECTED TO THEN INCREASE IN SPEED AND TRACK GENERALLY SOUTHWESTWARD ALONG THE SUBTROPICAL STEERING RIDGE. TC 13S SHOULD INTENSIFY UNDER A FAVORABLE UPPER LEVEL ENVIRONMENT, WARM SEA SURFACE TEMPERATURES, AND INCREASED POLEWARD OUTFLOW INTO THE UPPER LEVEL TROUGH DIGGING NORTHWARD. NUMERICAL MODEL GUIDANCE IS IN POOR AGREEMENT DUE TO THE WEAK STEERING ENVIRONMENT. NOGAPS, GFDN, AND WBAR ERRONEOUSLY TRACK THE SYSTEM QUICKLY WESTWARD AND NORTHWARD. THIS FORECAST IS IN AGREEMENT WITH THE SLOW INITIAL TRACK SPEED AND THEN THE LATER SOUTHWESTWARD TRACK. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 100600Z IS 16 FEET. NEXT WARNINGS AT 102100Z AND 110900Z.// ========================================================================= SUBJ: TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 003 WTXS31 PGTW 102100 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 101800Z --- NEAR 13.7S 53.7E MOVEMENT PAST SIX HOURS - 290 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 13.7S 53.7E --- FORECASTS: 12 HRS, VALID AT: 110600Z --- 14.0S 53.8E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 090 DEG/ 01 KTS --- 24 HRS, VALID AT: 111800Z --- 14.0S 54.1E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 340 DEG/ 02 KTS --- 36 HRS, VALID AT: 120600Z --- 13.7S 54.0E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 295 DEG/ 01 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 121800Z --- 13.6S 53.8E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 240 DEG/ 03 KTS --- 72 HRS, VALID AT: 131800Z --- 14.3S 52.6E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 230 DEG/ 09 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 141800Z --- 16.7S 49.8E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 120 HR POSIT: 220 DEG/ 08 KTS --- 120 HRS, VALID AT: 151800Z --- 19.3S 47.5E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 102100Z POSITION NEAR 13.8S 53.7E.TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 500 NM NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS REMAINED QUASISTATIONARY DURING THE PAST SIX HOURS. BINGIZA REMAINS WEDGED BETWEEN TWO WEAKENED MID-LAYER STEERING RIDGES IN A WEAK AND AMBIGUOUS STEERING ENVIRONMENT. THE CYCLONE HAS INTENSIFIED LITTLE OVER THE PAST DAY. POLEWARD OUTFLOW HAS WEAKENED AS THE UPPER LEVEL TROUGH TO THE SOUTH PASSES DOWNSTREAM. HOWEVER, ANOTHER DEEPER TROUGH IS POSITIONED TO MOVE IN BEHIND IT AND CREATE ANOTHER MEANS FOR POLEWARD OUTFLOW AND STEADY INTENSIFICATION. THE UPPER LEVEL RIDGE AXIS HAS ALIGNED ATOP THE SYSTEM AND HAS HELPED TO RELAX VERTICAL WIND SHEAR. DESPITE LOWER SHEAR CONVECTION IS SHALLOW AND YIELDS A 3.0 DVORAK INTENSITY ESTIMATE FROM PGTW AND FMEE. POSITION CONFIDENCE IS POOR AND IS BASED ON ANIMATED INFRARED SATELLITE IMAGERY, BUT WEIGHTED TOWARDS THE EAST SIDE OF THE CENTRAL CONVECTION TO ACCOUNT FOR DISPLACEMENT OF HIGH CLOUDS TO THE WEST. THE FORECAST REASONING HAS CHANGED LITTLE FROM THE PREVIOUS WARNING. THE TC WILL REMAIN IN A WEAK STEERING ENVIRONMENT FOR THE FIRST TWO-THIRDS OF THE FORECAST PERIOD THEN BEGIN TO ACCELERATE TO THE SOUTHWEST AS THE RIDGE CENTER OVER SOUTHERN AFRICA STRENGTHENS TO THE EAST WITH THE PASSAGE OF A LONGWAVE TROUGH. MODEL GUIDANCE HAS COME INTO SLIGHTLY BETTER AGREEMENT IN THE EXTENDED FORECAST IN REGARDS TO THIS STRENGTHENED STEERING RIDGE. THE INTENSITY FORECAST IS ALSO SIMILAR TO THE PREVIOUS FORECAST WITH A PEAK INTENSITY EXPECTED NEAR TAU 72. BY DAY 5 THE SYSTEM WILL BE NEARLY DISSIPATED OVER MADAGASCAR. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101800Z IS 16 FEET. NEXT WARNINGS AT 110900Z AND 112100Z.// NNNN ========================================================================= WTXS31 PGTW 20110211 09:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 004// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 110600Z --- NEAR 14.2S 53.7E MOVEMENT PAST SIX HOURS - 155 DEGREES AT 02 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT REPEAT POSIT: 14.2S 53.7E --- FORECASTS: 12 HRS, VALID AT: 111800Z --- 14.4S 53.8E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 180 DEG/ 01 KTS --- 24 HRS, VALID AT: 120600Z --- 14.5S 53.8E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 225 DEG/ 01 KTS --- 36 HRS, VALID AT: 121800Z --- 14.6S 53.7E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 255 DEG/ 04 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 130600Z --- 14.8S 52.9E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 235 DEG/ 03 KTS --- 72 HRS, VALID AT: 140600Z --- 15.5S 51.8E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 225 DEG/ 09 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 150600Z --- 18.0S 49.0E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 120 HR POSIT: 220 DEG/ 07 KTS --- 120 HRS, VALID AT: 160600Z --- 20.2S 47.1E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 110900Z POSITION NEAR 14.2S 53.7E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 485 NM NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS REMAINED QUASI-STATIONARY DURING THE PAST SIX HOURS. THE CYCLONE HAS NOT INTENSIFIED OVER THE PAST DAY AND ANIMATED INFRARED SATELLITE IMAGERY SHOWS WEAKENING DEEP CONVECTION. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) SHOWS A PARTIALLY EXPOSED, BUT STILL WELL-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) TO THE SOUTHEAST OF THE DEEP CONVECTION. THE INITIAL POSITION IS BASED ON THE MSI. THE INITIAL INTENSITY IS BASED ON PGTW, KNES, AND FMEE DVORAK ESTIMATES RANGING FROM 45 TO 55 KNOTS. AN UPPER LEVEL TROUGH TO THE EAST OF THE SYSTEM HAS CAUSED AN INCREASE IN VERTICAL WIND SHEAR AND SUBSIDENCE. TC 13S REMAINS QUASI-STATIONARY UNDER THE INFLUENCE OF A WEAK STEERING ENVIRONMENT, WHICH SHOULD CONTINUE OVER THE NEXT 36 HOURS. AS THE MID-LATITUDE, UPPER LEVEL TROUGH TO THE SOUTH MOVES FARTHER EASTWARD, A STEERING RIDGE IS EXPECTED TO BUILD IN TO THE SOUTHEAST. TC BINGIZA WILL THEN BEGIN TO INCREASE IN SPEED AND GENERALLY TRACK SOUTHWESTWARD FOR THE REMAINDER OF THE FORECAST PERIOD. THE SYSTEM SHOULD BEGIN TO SLOWLY INTENSIFY AS THE UPPER LEVEL TROUGH TO THE EAST FILLS AND WIND SHEAR DECREASES. ADDITIONALLY, IMPROVED POLEWARD OUTFLOW INTO THE UPPER LEVEL TROUGH TO THE SOUTH SHOULD SUPPORT FURTHER INTENSIFICATION. BY TAU 96, TC 13S IS EXPECTED TO MAKE LANDFALL OVER MADAGASCAR AND DISSIPATE OVER LAND BY TAU 120. MODEL GUIDANCE HAS COME INTO SLIGHTLY BETTER AGREEMENT IN THE EXTENDED FORECAST IN REGARDS TO THIS STRENGTHENED STEERING RIDGE. THE FORECAST INTENSITY HAS DECREASED FROM THE PREVIOUS FORECAST DUE TO THE HINDERING UPPER LEVEL TROUGH TO THE EAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101800Z IS 20 FEET. NEXT WARNINGS AT 110900Z AND 112100Z. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 110600Z IS 20 FEET. NEXT WARNINGS AT 112100Z AND 120900Z.// ========================================================================= WTXS31 PGTW 20110211 21:00z 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 005 02 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 111800Z --- NEAR 14.9S 53.8E MOVEMENT PAST SIX HOURS - 160 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT REPEAT POSIT: 14.9S 53.8E --- FORECASTS: 12 HRS, VALID AT: 120600Z --- 15.1S 53.8E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 245 DEG/ 03 KTS --- 24 HRS, VALID AT: 121800Z --- 15.3S 53.3E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 265 DEG/ 04 KTS --- 36 HRS, VALID AT: 130600Z --- 15.4S 52.4E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 265 DEG/ 04 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 131800Z --- 15.5S 51.5E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 250 DEG/ 05 KTS --- 72 HRS, VALID AT: 141800Z --- 16.1S 49.6E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 96 HR POSIT: 230 DEG/ 05 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 151800Z --- 17.3S 48.1E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 120 HR POSIT: 215 DEG/ 07 KTS --- 120 HRS, VALID AT: 161800Z --- 19.4S 46.4E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 112100Z POSITION NEAR 15.0S 53.8E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 465 NM EAST-NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS MEANDERED SLOWLY SOUTHWARD DURING THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY AND A 111425Z 91H SSMIS MICROWAVE IMAGE INDICATE ENHANCED DEEP CONVECTION BEGINNING TO CONSOLIDATE OVER THE LOW LEVEL CIRCULATION CENTER. THERE IS FAIR CONFIDENCE IN THE CURRENT POSITION BASED ON THE AFOREMENTIONED MICROWAVE IMAGE. THE CURRENT INTENSITY IS BASED ON DVORAK ESTIMATES RANGING FROM 2.5 TO 3.0 FROM KNES, FMEE, AND PGTW. THE SYSTEM REMAINS WITHIN A WEAK STEERING ENVIRONMENT, BUT IS FORECAST TO BEGIN TRACKING SOUTHWESTWARD WITHIN THE NEXT 24 HOURS AS A LOW- TO MID-LEVEL STEERING RIDGE BUILDS TO THE SOUTH. TC 13S IS EXPECTED TO GRADUALLY INTENSIFY AS VERTICAL WIND SHEAR CONTINUES TO RELAX, OUTFLOW CONTINUES TO IMPROVE, AND ALONG TRACK SEA SURFACE TEMPERATURES REMAIN FAVORABLE. BY TAU 72, TC BINGIZA IS FORECAST TO MAKE LANDFALL ALONG THE NORTHEASTERN COAST OF MADAGASCAR AND RAPIDLY DISSIPATE AS THE SYSTEM TRACKS INLAND OVER MOUNTAINOUS TERRAIN. NUMERICAL MODEL GUIDANCE HAS COME INTO BETTER AGREEMENT; THEREFORE THIS FORECAST IS CONSISTENT WITH THE PREVIOUS FORECAST AND IS CLOSE TO MODEL CONSENSUS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 111800Z IS 22 FEET. NEXT WARNINGS AT 120900Z AND 122100Z. REFER TO TROPICAL CYCLONE 14S (FOURTEEN) WARNINGS (WTXS32 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110212 09:00z 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 006 02 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 120600Z --- NEAR 15.5S 53.8E MOVEMENT PAST SIX HOURS - 180 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT REPEAT POSIT: 15.5S 53.8E --- FORECASTS: 12 HRS, VALID AT: 121800Z --- 16.1S 53.1E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 245 DEG/ 05 KTS --- 24 HRS, VALID AT: 130600Z --- 16.5S 52.2E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 255 DEG/ 07 KTS --- 36 HRS, VALID AT: 131800Z --- 16.9S 50.8E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 260 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 140600Z --- 17.2S 49.3E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 064 KT WINDS - 015 NM NORTHEAST QUADRANT 015 NM SOUTHEAST QUADRANT 015 NM SOUTHWEST QUADRANT 015 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 260 DEG/ 07 KTS --- 72 HRS, VALID AT: 150600Z --- 17.7S 46.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 120900Z POSITION NEAR 15.7S 53.6E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 440 NM EAST-NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SLOWLY SOUTHWARD IN A WEAK STEERING ENVIRONMENT DURING THE PAST SIX HOURS. ANIMATED WATER VAPOR IMAGERY INDICATES THAT A MAJOR SHORT WAVE TROUGH MOVING OVER MADAGASCAR IS DEVELOPING A POLEWARD OUTFLOW CHANNEL AND AIDING INTENSIFICATION. THE CURRENT INTENSITY ANALYSIS IS BASED ON DVORAK ESTIMATES OF 55 KNOTS FROM PGTW, KNES AND FMEE. A 120213Z 37GHZ CORIOLIS IMAGE REVEALS EXTENSIVE CONVECTIVE BANDING FEEDING INTO THE LOW LEVEL CIRCULATION CENTER AND A MICROWAVE EYE. TC 13S IS EXPECTED TO BEGIN TRACKING SOUTHWESTWARD DURING THE NEXT 12-24 HOURS AS A WEAK STEERING RIDGE BUILDS IN TO THE SOUTH. DYNAMIC AIDS ARE IN GOOD AGREEMENT WITH A TRACK TAKING 13S ONSHORE OF NORTHEASTERN MADAGASCAR NEAR TAU 48. TC 13S IS EXPECTED TO REACH A PEAK INTENSITY NEAR 80 KNOTS BEFORE TRACKING ASHORE. THE SYSTEM EXISTS IN A FAVORABLE ENVIRONMENT FOR INTENSIFICATION WITH ALONG-TRACK SEA SURFACE TEMPERATURES NEAR 30 DEGREES CELSIUS AND VERTICAL WIND SHEAR UNDER 15 KNOTS. TC 13S WILL DISSIPATE RAPIDLY OVER THE RUGGED TERRAIN OF MADAGASCAR BUT THERE IS A POTENTIAL FOR THE REMNANTS TO RE-DEVELOP IN THE MOZAMBIQUE CHANNEL IN THE LONG RANGE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101800Z IS 16 FEET. NEXT WARNINGS AT 110900Z AND 112100Z. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 120600Z IS 20 FEET. NEXT WARNINGS AT 122100Z AND 130900Z. REFER TO TROPICAL CYCLONE 14S (FOURTEEN) WARNINGS (WTXS32 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110212 21:00z 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 007 02 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 121800Z --- NEAR 15.6S 53.4E MOVEMENT PAST SIX HOURS - 250 DEGREES AT 03 KTS POSITION ACCURATE TO WITHIN 025 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 015 NM NORTHEAST QUADRANT 015 NM SOUTHEAST QUADRANT 015 NM SOUTHWEST QUADRANT 015 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT REPEAT POSIT: 15.6S 53.4E --- FORECASTS: 12 HRS, VALID AT: 130600Z --- 15.8S 52.6E MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 260 DEG/ 05 KTS --- 24 HRS, VALID AT: 131800Z --- 16.0S 51.5E MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 260 DEG/ 08 KTS --- 36 HRS, VALID AT: 140600Z --- 16.3S 49.9E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 255 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 141800Z --- 16.7S 48.4E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 72 HR POSIT: 240 DEG/ 07 KTS --- 72 HRS, VALID AT: 151800Z --- 18.1S 45.8E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 122100Z POSITION NEAR 15.6S 53.2E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 420 NM EAST-NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED WEST-SOUTHWESTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY AND A 121716Z 91H SSMIS MICROWAVE IMAGE SHOW DEEP CONVECTIVE BANDING FEEDING INTO A 28 NM CONCENTRIC EYE. THE CURRENT INTENSITY OF 85 KNOTS IS BASED ON DVORAK ESTIMATES RANGING FROM 77 TO 90 KNOTS FROM PGTW, KNES, AND FMEE. ENVIRONMENTAL ANALYSIS REVEALS THAT FAVORABLE SEA SURFACE TEMPERATURES (>28 DEGREES CELSIUS) AND AN ENHANCED POLEWARD OUTFLOW CHANNEL, ASSOCIATED WITH A TRANSITORY MID-LATITUDE TROUGH TO THE SOUTH, HAS ALLOWED FOR RAPID INTENSIFICATION OVER THE PAST 12 HOURS. TC 13S IS CURRENTLY TRACKING WESTWARD ALONG THE NORTHERN PERIPHERY OF A WEAK STEERING RIDGE BUILDING TO THE SOUTH. TC BINGIZA IS FORECAST TO CONTINUE TRACKING IN A GENERALLY WEST-SOUTHWESTWARD DIRECTION AND CONTINUE TO INTENSIFY BEFORE MAKING LANDFALL ALONG THE NORTHEASTERN COAST OF MADAGASCAR NEAR TAU 36. THE SYSTEM IS EXPECTED TO DISSIPATE OVER THE RUGGED TERRAIN OF MADAGASCAR, BUT THERE IS THE POTENTIAL FOR REMNANTS TO RE-DEVELOP IN THE MOZAMBIQUE CHANNEL IN THE LATER TAUS. NUMERICAL MODEL GUIDANCE IS IN GOOD AGREEMENT; THEREFORE THIS FORECAST IS CLOSE TO MODEL CONSENSUS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 121800Z IS 23 FEET. NEXT WARNINGS AT 130900Z AND 132100Z. REFER TO TROPICAL CYCLONE 14S (FOURTEEN) WARNINGS (WTXS32 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110213 09:00z SUBJ: TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 008 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 008 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 130600Z --- NEAR 15.8S 52.6E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 025 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 130 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 120 NM NORTHWEST QUADRANT REPEAT POSIT: 15.8S 52.6E --- FORECASTS: 12 HRS, VALID AT: 131800Z --- 16.1S 51.2E MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 130 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 120 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 265 DEG/ 08 KTS --- 24 HRS, VALID AT: 140600Z --- 16.3S 49.5E MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 255 DEG/ 08 KTS --- 36 HRS, VALID AT: 141800Z --- 16.7S 47.8E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 240 DEG/ 09 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 150600Z --- 17.5S 46.2E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 130900Z POSITION NEAR 15.9S 52.3E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 375 NM EAST-NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS ACCELERATED WESTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 130239Z SSMIS IMAGE DEPICT A WELL-ORGANIZED SYSTEM GOING THROUGH AN EYEWALL REPLACEMENT CYCLE. THE INNER EYE HAS CONTRACTED OVER THE PAST 06 HOURS FROM 25NM TO 15NM EYE WHILE AN OUTER EYEWALL APPEARS TO BE FORMING WITH TIGHTLY-CURVED CONVECTIVE BANDING WRAPPING AROUND THE LOW-LEVEL CIRCULATION CENTER (LLCC). ANIMATED WATER VAPOR IMAGERY CONTINUES TO INDICATE EXCELLENT RADIAL OUTFLOW. THERE IS HIGH CONFIDENCE IN THE CURRENT POSITION AND RECENT MOTION. THE CURRENT INTENSITY IS ASSESSED AT 100 KNOTS BASED ON DVORAK ESTIMATES RANGING FROM 90 TO 102 KNOTS. TC 13S IS TRACKING WESTWARD ALONG THE NORTHERN PERIPHERY OF THE MID-LEVEL SUBTROPICAL STEERING RIDGE, WHICH HAS BEGUN TO BUILD AS A DEEP MIDLATITUDE SHORTWAVE TROUGH FILLS AND SHIFTS EAST AWAY FROM MADAGASCAR. THE SYSTEM IS FORECAST TO TRACK WEST-SOUTHWESTWARD AND SHOULD MAKE LANDFALL NEAR TAU 24 AND DISSIPATE OVER MOUNTAINOUS TERRAIN BETWEEN TAU 36 AND 48. AVAILABLE MODEL GUIDANCE (NOGAPS, GFDN, UKMO, ECMWF AND GFS) IS IN GOOD AGREEMENT AND SUPPORTS THE CURRENT FORECAST, WHICH REMAINS CLOSE TO THE MODEL CONSENSUS. TC 13S SHOULD MAINTAIN INTENSITY CLOSE TO 100 KNOTS UNTIL MAKING LANDFALL. THE BULK OF THE DYNAMIC MODELS CONTINUE TO TRACK THE REMNANTS (WITHOUT SIGNIFICANT RE-DEVELOPMENT) OVER THE MOZAMBIQUE CHANNEL BEFORE RE-CURVING THE SYSTEM BACK SOUTHEASTWARD. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 130600Z IS 28 FEET. NEXT WARNINGS AT 132100Z AND 140900Z.// ========================================================================= WTXS31 PGTW 20110213 21:00z 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 009 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 131800Z --- NEAR 15.9S 51.6E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 025 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 130 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 120 NM NORTHWEST QUADRANT REPEAT POSIT: 15.9S 51.6E --- FORECASTS: 12 HRS, VALID AT: 140600Z --- 16.2S 49.7E MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 130 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 120 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 260 DEG/ 10 KTS --- 24 HRS, VALID AT: 141800Z --- 16.6S 47.7E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 250 DEG/ 09 KTS --- 36 HRS, VALID AT: 150600Z --- 17.2S 45.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 245 DEG/ 09 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 151800Z --- 17.9S 44.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 72 HR POSIT: 220 DEG/ 05 KTS --- 72 HRS, VALID AT: 161800Z --- 19.5S 42.7E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 180 DEG/ 03 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 171800Z --- 20.5S 42.7E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 165 DEG/ 03 KTS --- 120 HRS, VALID AT: 181800Z --- 21.7S 43.0E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT WIND RADII VALID OVER OPEN WATER ONLY --- REMARKS: 132100Z POSITION NEAR 16.0S 51.1E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 315 NM NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED WESTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY AND A 131704Z 91H SSMIS MICROWAVE IMAGE DEPICT A 14 NM CONCENTRIC EYE WITH TIGHTLY-CURVED CONVECTIVE BANDING WRAPPING AROUND THE LOW LEVEL CIRCULATION CENTER (LLCC). THERE IS HIGH CONFIDENCE IN THE CURRENT POSITION AND RECENT MOTION BASED ON THE INFRARED EYE. THE CURRENT INTENSITY IS BASED ON DVORAK ESTIMATES RANGING FROM 90 TO 102 KNOTS FROM PGTW AND FMEE. ANIMATED WATER VAPOR IMAGERY CONTINUES TO SHOW EXCELLENT RADIAL OUTFLOW. TC 13S IS TRACKING ALONG THE NORTHERN PERIPHERY OF THE MID-LEVEL STEERING RIDGE BUILDING TO THE SOUTH AND IS EXPECTED TO MAKE LANDFALL ALONG THE NORTHEASTERN COAST OF MADAGASCAR WITHIN THE NEXT 12 HOURS. AS THE SYSTEM CONTINUES TO TRACK WESTWARD OVER THE MOUNTAINS OF MADAGASCAR IT IS EXPECTED TO WEAKEN SIGNIFICANTLY (<30 KNOTS). HOWEVER, BASED ON THE FACT THAT TC BINGIZA REACHED A HIGHER PEAK INTENSITY THEN ORIGINALLY FORECASTED AND DUE TO RECENT MODEL DEVELOPMENT, REMNANT ENERGY FROM THE TC IS EXPECTED TO MOVE OVER THE MOZAMBIQUE CHANNEL AND RE-DEVELOP WITHIN 72 HOURS. HIGHLY FAVORABLE SEA SURFACE TEMPERATURES (>30 DEGREES CELSIUS) AND OCEAN HEAT CONTENT VALUES WILL ALLOW FOR SIGNIFICANT RE-INTENSIFICATION WITHIN THE CHANNEL BEFORE TC 13S RECURVES SOUTHEASTWARD AHEAD OF A TRANSITORY MID-LATITUDE TROUGH. AVAILABLE NUMERICAL MODEL GUIDANCE (NOGAPS, GFDN, GFS, EGRR, AND ECMWF) IS IN GOOD GENERAL AGREEMENT WITH THIS FORECAST PHILOSOPHY; THEREFORE THIS FORECAST REMAINS CLOSE TO MODEL CONSENSUS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 131800Z IS 28 FEET. NEXT WARNINGS AT 140900Z AND 142100Z.// ========================================================================= WTXS31 PGTW 140900 MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 010// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 010 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 140600Z --- NEAR 15.9S 49.8E MOVEMENT PAST SIX HOURS - 270 DEGREES AT 08 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT REPEAT POSIT: 15.9S 49.8E --- FORECASTS: 12 HRS, VALID AT: 141800Z --- 16.3S 47.8E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 255 DEG/ 09 KTS --- 24 HRS, VALID AT: 150600Z --- 16.8S 46.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 240 DEG/ 08 KTS --- 36 HRS, VALID AT: 151800Z --- 17.6S 44.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 220 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 160600Z --- 18.6S 43.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 72 HR POSIT: 205 DEG/ 05 KTS --- 72 HRS, VALID AT: 170600Z --- 20.6S 42.8E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 175 DEG/ 07 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 180600Z --- 23.2S 43.1E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 160 DEG/ 07 KTS --- 120 HRS, VALID AT: 190600Z --- 25.9S 44.1E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY --- REMARKS: 140900Z POSITION NEAR 16.0S 49.3E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 250 NM NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED WESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY INDICATES THAT TC 13S REMAINS WELL-ORGANIZED WITH TIGHTLY- CURVED CONVECTIVE BANDING WRAPPING INTO A WELL-DEFINED LOW-LEVEL CIRCULATION CENTER. THE SYSTEM HAS MADE LANDFALL AT 14/06Z AFTER TRACKING ACROSS THE MASOALA PENINSULA AND SKIRTING ANTONGIL BAY. THE CURRENT INTENSITY IS BASED ON DVORAK ESTIMATES RANGING FROM 77 TO 102 KNOTS FROM PGTW AND FMEE. ANIMATED WATER VAPOR IMAGERY CONTINUES TO SHOW EXCELLENT RADIAL OUTFLOW. TC 13S IS TRACKING ALONG THE NORTHWESTERN PERIPHERY OF THE MID-LEVEL STEERING RIDGE POSITIONED TO THE SOUTH AND IS EXPECTED TO CONTINUE TRACKING WEST-SOUTHWESTWARD OVER LAND THROUGH TAU 36 WHILE RAPIDLY WEAKENING. MODEL GUIDANCE THROUGH TAU 48 IS IN TIGHT AGREEMENT. AFTER TAU 48, TC 13S IS EXPECTED TO REGENERATE OVER THE MOZAMBIQUE CHANNEL UNDER FAVORABLE CONDITIONS AS IT TURNS SOUTHWESTWARD TO SOUTHWARD. THE SYSTEM IS EXPECTED TO REACH A PEAK INTENSITY OF 65 KNOTS BY TAU 96 DUE TO FAVORABLE SST >30 DEGREES CELSIUS AND HIGH OCEAN HEAT CONTENT VALUES. NUMERICAL MODEL GUIDANCE (NOGAPS, GFDN, GFS, UKMO, WBAR AND ECMWF) IS IN FAIR AGREEMENT WITH GFDN AND ECMWF TRACKING THE SYSTEM OVER WATER THROUGH TAU 120. NOGAPS, UKMO AND GFS TRACK THE SYSTEM OVER SOUTHERN MADAGASCAR DESPITE A DEVELOPING STEERING RIDGE TO THE SOUTH. OVERALL, THE ECMWF APPEARS MORE REALISTIC, THEREFORE, THIS FORECAST FAVORS THE OVER-WATER SOLUTIONS AND IS POSITIONED WEST OF THE MODEL CONSENSUS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 140600Z IS 18 FEET. NEXT WARNINGS AT 142100Z AND 150900Z.// ========================================================================= WTXS31 PGTW 20110214 21:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 011// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 011 01 ACTIVE TROPICAL CYCLONE IN SOUTH IO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 141800Z --- NEAR 16.0S 47.7E MOVEMENT PAST SIX HOURS - 265 DEGREES AT 11 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT 010 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 16.0S 47.7E --- FORECASTS: 12 HRS, VALID AT: 150600Z --- 16.4S 45.9E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 245 DEG/ 07 KTS --- 24 HRS, VALID AT: 151800Z --- 17.0S 44.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 36 HR POSIT: 215 DEG/ 07 KTS --- 36 HRS, VALID AT: 160600Z --- 18.2S 43.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 190 DEG/ 09 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 161800Z --- 19.9S 43.3E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 175 DEG/ 07 KTS --- 72 HRS, VALID AT: 171800Z --- 22.5S 43.6E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 155 DEG/ 06 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 181800Z --- 24.5S 44.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 142100Z POSITION NEAR 16.1S 47.3E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 180 NM NORTH-NORTHEAST OF ANTANA- NARIVO, MADAGASCAR, HAS TRACKED JUST SOUTH OF WESTWARD AT 11 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY SHOWS THE SYSTEM HAS LOST OVER 75 PERCENT OF ITS CONVECTION AS IT DRAGGED ACROSS THE ISLAND'S MOUNTAINOUS TERRAIN. THE INITIAL POSITION IS BASED ON THE ABOVE ANIMATION DEPICTING A CLEAR AREA OVER THE LOW LEVEL CIRCULATION CENTER. THIS IS SUPPORTED BY A 141652Z SSMIS MICROWAVE IMAGERY. THE INITIAL INTENSITY IS EXTRAPOLATED FROM NEARBY SURFACE OBSERVATIONS. UPPER LEVEL ANALYSIS INDICATES TC 13S IS JUST TO THE NORTH OF A RIDGE AXIS IN AN AREA OF LOW VERTICAL WIND SHEAR (VWS) AND DIVERGENCE. THE CYCLONE IS TRACKING ALONG THE NORTHERN PERIPHERY OF A MID-LEVEL SUBTROPICAL RIDGE (STR) TO THE SOUTH. IT IS EXPECTED TO BEGIN TRACKING MORE SOUTHWESTWARD OVER THE NEXT 12-24 HOURS AS THE STR ADJUSTS TO THE EAST IN RESPONSE TO A MID-LATITUDE TROUGH APPROACHING FROM THE SOUTHWEST. TC 13S WILL EMERGE OVER THE MOZAMBIQUE CHANNEL BY TAU 36 AND MOMENTARILY INTENSIFY, FUELED BY THE WARM WATERS AND ENHANCED BY FAVORABLE UPPER LEVEL CONDITIONS. HOWEVER, BY TAU 72, THE AFOREMENTIONED TROUGH WILL STEER THE SYSTEM SOUTHEASTWARD BACK INTO THE ISLAND. TC BINGIZA WILL DISSIPATE BY TAU 96, DUE TO INTERACTION WITH MADAGASCAR'S RUGGED TERRAIN AND EXPOSURE TO STRONG WESTERLY VWS. THE AVAILABLE NUMERIC GUIDANCE ARE IN OVERALL GOOD AGREEMENT WITH THIS TRACK FORECAST WITH ECMWF ON THE RIGHT OF AND GFS ON THE LEFT OF THE TRACK ENVELOPE. THE FORMER ANTICIPATES THE STEERING STR TO REMAIN STRONG ALL THROUGH THE FORECAST PERIOD WHILE THE LATTER UNREALISTICALLY TRACKS THE VORTEX DIRECTLY INTO THE RIDGE. THIS TRACK IS TO THE RIGHT OF CONSENSUS. NEXT WARNINGS AT 150900Z AND 152100Z.// ========================================================================= WTXS31 PGTW 20110215 09:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 012// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 012 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 150600Z --- NEAR 16.3S 45.5E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY REPEAT POSIT: 16.3S 45.5E --- FORECASTS: 12 HRS, VALID AT: 151800Z --- 16.7S 44.5E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 24 HR POSIT: 225 DEG/ 06 KTS --- 24 HRS, VALID AT: 160600Z --- 17.5S 43.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 200 DEG/ 04 KTS --- 36 HRS, VALID AT: 161800Z --- 18.3S 43.4E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 170 DEG/ 03 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 170600Z --- 18.9S 43.5E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 165 DEG/ 05 KTS --- 72 HRS, VALID AT: 180600Z --- 20.9S 44.1E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 96 HR POSIT: 155 DEG/ 10 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 190600Z --- 24.5S 46.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 150900Z POSITION NEAR 16.4S 45.2E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 180 NM NORTH-NORTHEAST OF ANTANA- NARIVO, MADAGASCAR, HAS TRACKED JUST SOUTH OF WESTWARD AT 10 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY SUGGESTS THE LOW LEVEL CIRCULATION CENTER (LLCC) IS STILL OVER LAND. MORE RECENTLY A LARGE AREA OF DEEP CONVECTION HAS BEGUN TO FORM WEST OF THE LLCC IN THE MOZAMBIQUE CHANNEL. CURRENTLY THERE IS NO EVIDENCE OF LEE SIDE LOW GENESIS IN THE VICINITY OF THIS CONVECTION. THE INITIAL FORECAST INTENSITY IS BASED ON A 15/06Z OBSERVATION FROM NEARBY MAJUNGA MAHAJANGA, MADAGASCAR (FMNM), WHERE WINDS ARE OUT OF THE NORTH AT 17 KNOTS AND SEA LEVEL PRESSURE IS APPROXIMATELY 997 MB. THE CYCLONE WILL TRACK WEST INTO THE EASTERN MOZAMBIQUE CHANNEL OVER THE NEXT 12 HOURS UNDER THE STEERING INFLUENCE OF A LOW TO MID- LEVEL STEERING RIDGE TO THE SOUTH. THIS RIDGE WILL SLOWLY ERODE OVER TIME AS A DEEP LAYER TROUGH PASSES TO THE SOUTH. THIS WILL RESULT IN A MORE POLEWARD TRACK, WHICH WILL PARALLEL THE WESTERN COASTLINE. THE CYCLONE IS STILL EXPECTED TO RE-INTENSITY DURING THIS PERIOD UNDER THE INFLUENCE OF LOW VERTICAL WIND SHEAR AND FAVORABLE SEA SURFACE TEMPERATURES. GIVEN ITS PROXIMITY TO LAND THE INTENSITY FORECAST IS MORE MODEST THAN SOME OF THE STATISTICAL-DYNAMICAL INTENSITY GUIDANCE. NONETHELESS, THE PEAK INTENSITY HAS BEEN INCREASED TO 55 KNOTS TO ACCOUNT FOR THIS DISPARITY. BY TAU 72 THE TC WILL TURN BACK INLAND AS THE STEERING RIDGE STRENGTHENS TO THE EAST WITH THE DEPARTURE OF THE AFOREMENTIONED TROUGH AND THE ARRIVAL OF YET ANOTHER. DISSIPATION WILL OCCUR OVER LAND BEFORE PASSAGE BACK OVER WATER. NEXT WARNINGS AT 152100Z AND 160900Z.// ========================================================================= WTXS31 PGTW 20110215 21:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 014// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 014 02 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 151800Z --- NEAR 15.9S 44.2E MOVEMENT PAST SIX HOURS - 305 DEGREES AT 08 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY REPEAT POSIT: 15.9S 44.2E --- FORECASTS: 12 HRS, VALID AT: 160600Z --- 16.9S 43.6E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 210 DEG/ 04 KTS --- 24 HRS, VALID AT: 161800Z --- 17.6S 43.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 180 DEG/ 03 KTS --- 36 HRS, VALID AT: 170600Z --- 18.1S 43.2E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 160 DEG/ 04 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 171800Z --- 18.8S 43.5E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 155 DEG/ 08 KTS --- 72 HRS, VALID AT: 181800Z --- 21.6S 45.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 150 DEG/ 08 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 191800Z --- 24.5S 46.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 152100Z POSITION NEAR 16.2S 44.0E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 245 NM NORTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED IMAGERY CONFIRMS TC 13S HAS MOVED INTO THE MOZAMBIQUE CHANNEL AND HAS STARTED TO CONSOLIDATE. A 151511Z SSMIS SHOWS CURVED CONVECTIVE BANDING ORGANIZING AROUND THE LOW LEVEL CIRCULATION CENTER (LLCC) WITH EXTENSIVE DEEP CONVECTION OVER THE WESTERN SEMI-CIRCLE. THE CURRENT INTENSITY IS BASED ON FMEE AND PGTW DVORAK ESTIMATES. ANIMATED WATER VAPOR IMAGERY INDICATES A WELL-DEVELOPED EQUATORWARD OUTFLOW CHANNEL AND A WEAKER POLEWARD OUTFLOW CHANNEL. THE CYCLONE IS EXPECTED TO TURN SOUTHWESTWARD DURING THE NEXT 12 HOURS AS A LOW TO MID-LEVEL STEERING RIDGE TO THE SOUTH WEAKENS AND ALLOWS THE STORM TO TURN POLEWARD. THE FAVORABLE OUTFLOW CONDITIONS AND ALONG-TRACK SEA SURFACE TEMPERATURES OF 29-30 DEGREES CELSIUS WILL CAUSE TC 13S TO STEADILY INTENSIFY BEFORE MAKING LANDFALL AGAIN AFTER TAU 48. ONCE OVER THE RUGGED TRAIN OF SOUTHERN MADAGASCAR, TC 13S WILL DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE. MODEL GUIDANCE IS IN GOOD AGREEMENT OF AN OVER-WATER TRACK WITH A SUBSEQUENT TURN TO THE SOUTHEAST. THE FORECAST TRACK IS SLIGHTLY WEST OF CONSENSUS, FAVORING THE PREVIOUS FORECAST AND THE ECMWF SOLUTION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 151800Z IS 11 FEET. NEXT WARNINGS AT 160900Z AND 162100Z. REFER TO TROPICAL CYCLONE 15S (FIFTEEN) WARNINGS (WTXS32 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110216 09:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 015// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 015 03 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 160600Z --- NEAR 17.4S 43.9E MOVEMENT PAST SIX HOURS - 200 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY REPEAT POSIT: 17.4S 43.9E --- FORECASTS: 12 HRS, VALID AT: 161800Z --- 18.3S 43.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 190 DEG/ 03 KTS --- 24 HRS, VALID AT: 170600Z --- 18.9S 43.6E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 175 DEG/ 04 KTS --- 36 HRS, VALID AT: 171800Z --- 19.7S 43.7E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 155 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 180600Z --- 20.7S 44.2E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 72 HR POSIT: 140 DEG/ 05 KTS --- 72 HRS, VALID AT: 190600Z --- 22.1S 45.5E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 96 HR POSIT: 130 DEG/ 05 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 200600Z --- 23.5S 47.3E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 160900Z POSITION NEAR 17.6S 43.8E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 200 NM WEST-NORTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTH- SOUTHWESTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS A WEAK LOW LEVEL CIRCULATION CENTER (LLCC) THAT IS PARTLY OVER LAND. THE DEEPEST CONVECTION HAS REMAINED ON THE NORTH SIDE OF THE CIRCULATION EXTENDING FAR WEST INTO THE MOZAMBIQUE CHANNEL. MORE RECENTLY THIS CONVECTION HAS WEAKENED AND BECOME FRAGMENTED. THE SOUTHERN SEMICIRCLE IS NEARLY DEVOID OF ANY DEEP CONVECTION. THE INITIAL FORECAST INTENSITY IS A REFLECTION OF THE POOR STATE OF CONVECTION AND IS CONSISTENT WITH A 151807Z ASCAT PASS, WHICH SHOWS 30 KNOTS ONSHORE FLOW INTO THE VICINITY OF THE LLCC. BECAUSE THIS FORECAST BRINGS THE CYCLONE CLOSER TO THE COASTLINE THAN THE PREVIOUS FORECAST THE PEAK INTENSITY HAS BEEN ADJUSTED DOWN TO 55 KNOTS. MORE RECENT MULTISPECTRAL IMAGERY EVEN SUGGESTS THAT THE LLCC MAY HAVE MOVED COMPLETELY OVER LAND. NONETHELESS THE STEERING RIDGE TO THE SOUTHWEST WILL ERODE OVER THE NEXT DAY WITH THE PASSAGE OF A LONGWAVE, DEEP LAYER TROUGH TO THE SOUTH. THE RIDGE TO THE NORTHEAST OF THE SYSTEM WILL THEN BECOME THE DOMINANT STEERING MECHANISM, STRENGTHENING SLIGHTLY, AND WILL FORCE THE TC BACK INLAND AROUND DAY 2 OF THE FORECAST. THE TC WILL DISSIPATE OVER SOUTHERN MADAGASCAR. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 160600Z IS 11 FEET. NEXT WARNINGS AT 162100Z AND 170900Z. REFER TO TROPICAL CYCLONE 15S (CARLOS) WARNINGS (WTXS32 PGTW)FOR TWELVE-HOURLY UPDATES. REFER TO TROPICAL CYCLONE 16S (SIXTEEN) WARNINGS (WTXS33 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110216 21:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 016// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 016 03 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 161800Z --- NEAR 19.7S 44.0E MOVEMENT PAST SIX HOURS - 180 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY REPEAT POSIT: 19.7S 44.0E --- FORECASTS: 12 HRS, VALID AT: 170600Z --- 20.5S 44.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 170 DEG/ 04 KTS --- 24 HRS, VALID AT: 171800Z --- 21.2S 44.1E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 160 DEG/ 05 KTS --- 36 HRS, VALID AT: 180600Z --- 22.2S 44.5E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 48 HR POSIT: 150 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 181800Z --- 23.2S 45.1E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 162100Z POSITION NEAR 19.9S 44.0E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 175 NM WEST-SOUTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTHWARD AT 09 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY AND A 161617Z SSMIS MICROWAVE IMAGE SHOW A WELL-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) WITH WEAK LOW LEVEL BANDING WRAPPING INTO THE CENTER. A MAJORITY OF THE DEEP CONVECTION ASSOCIATED WITH THIS SYSTEM IS FRAGMENTED AND CONTINUES TO EXTEND WESTWARD ACROSS THE MOZAMBIQUE CHANNEL. THE CURRENT INTENSITY (35 KNOTS) IS SLIGHTLY HIGHER THEN DVORAK ESTIMATES FROM PGTW AND FMEE OF 30 KNOTS BASED ON THE RELATIVELY WELL-DEFINED LOW LEVEL BANDING STRUCTURE IN MICROWAVE. WHILE ENVIRONMENTAL ANALYSIS INDICATES FAVORABLE CONDITIONS (WARM SSTS AND LOW VERTICAL WIND SHEAR) FOR DEVELOPMENT, THE CURRENT TRACK HAS SHIFTED CLOSER TO THE COAST, RESULTING IN LESS TIME FOR THE SYSTEM TO RE-ORGANIZE AND RE-INTENSIFY. THIS IS REFLECTED IN THE CURRENT FORECAST, WHICH INDICATES A LOWER PEAK INTENSITY PRIOR TO MAKING LANDFALL, THAN THE PREVIOUS FORECAST. TC 13S IS CURRENTLY TRACKING ALONG THE SOUTHWESTERN PERIPHERY OF THE LOW- TO MID-LEVEL STEERING RIDGE. THE PASSAGE OF A MID-LATITUDE LONG WAVE TROUGH WITHIN 24 HOURS WILL ERODE THE RIDGE AND ALLOW FOR THE SYSTEM TO TURN INLAND AND DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE BY TAU 36. NUMERICAL MODEL GUIDANCE IS IN GOOD GENERAL AGREEMENT WITH THIS FORECAST TRACK; THEREFORE THE CURRENT FORECAST IS CLOSE TO MODEL CONSENSUS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 161800Z IS 15 FEET. NEXT WARNINGS AT 170900Z AND 172100Z. REFER TO TROPICAL CYCLONE 15S (CARLOS) WARNINGS (WTXS32 PGTW) FOR TWELVE- HOURLY UPDATES. REFER TO TROPICAL CYCLONE 16S (DIANNE) WARNINGS (WTXS33 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110217 09:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 017// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 017 03 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 170600Z --- NEAR 20.9S 43.7E MOVEMENT PAST SIX HOURS - 190 DEGREES AT 07 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 20.9S 43.7E --- FORECASTS: 12 HRS, VALID AT: 171800Z --- 21.4S 43.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 150 DEG/ 03 KTS --- 24 HRS, VALID AT: 180600Z --- 21.9S 44.0E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 36 HR POSIT: 145 DEG/ 04 KTS --- 36 HRS, VALID AT: 181800Z --- 22.6S 44.5E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 170900Z POSITION NEAR 21.0S 43.7E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 220 NM WEST-SOUTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTHWARD AT 07 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 170523Z SSMIS IMAGE DEPICT DEEP CONVECTIVE BANDING WRAPPING FROM THE NORTHWEST INTO THE SOUTHEAST QUADRANT OF A PARTIALLY-EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC). THERE IS FAIR CONFIDENCE IN THE CURRENT POSITION BASED ON THE SSMIS IMAGE. THE CURRENT INTENSITY IS BASED ON DVORAK ESTIMATES RANGING FROM 35 TO 45 KNOTS FROM PGTW AND FMEE. TC 13S IS TRACKING UNDER THE STEERING INFLUENCE OF THE LOW- TO MID-LEVEL RIDGE POSITIONED TO THE NORTHEAST AND IS EXPECTED TO SLOWLY TRACK SOUTHWARD TO SOUTHEASTWARD OVER MADAGASCAR WITHIN THE NEXT 12-24 HOURS. THE AVAILABLE MODEL GUIDANCE IS IN FAIR AGREEMENT, HOWEVER, SEVERAL MODELS INDICATE AN ERRATIC, NEAR-QUASI-STATIONARY MOTION THROUGH TAU 24 (NOGAPS, GFDN AND WBAR). THIS UNCERTAINTY IS DUE TO A SHALLOW, WEAK SUBTROPICAL RIDGE POSITIONED SOUTH OF MADAGASCAR WITH SOUTHEASTERLY FLOW EVIDENT IN VISIBLE IMAGERY. THEREFORE, THERE IS A POSSIBILITY THAT THE WEAKENING SYSTEM MAY REMAIN OVER WATER UNTIL THE SOUTHERN RIDGE SHIFTS EASTWARD AS INDICATED IN THE NOGAPS FIELDS, WHICH WILL DRIVE THE SYSTEM SOUTHEASTWARD OVER LAND. REGARDLESS, TC 13S SHOULD CONTINUE TO WEAKEN DUE TO ITS PROXIMITY TO LAND AND IS EXPECTED TO DISSIPATE WITHIN 24 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 170600Z IS 16 FEET. NEXT WARNINGS AT 172100Z AND 180900Z. REFER TO TROPICAL CYCLONE 15S (CARLOS) WARNINGS (WTXS32 PGTW) FOR THE FINAL WARNING. REFER TO TROPICAL CYCLONE 16S (DIANNE) WARNINGS (WTXS33 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS31 PGTW 20110217 21:00z MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 018// RMKS/ 1. TROPICAL CYCLONE 13S (BINGIZA) WARNING NR 018 03 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 171800Z --- NEAR 21.2S 44.1E MOVEMENT PAST SIX HOURS - 135 DEGREES AT 04 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND REPEAT POSIT: 21.2S 44.1E --- FORECASTS: 12 HRS, VALID AT: 180600Z --- 22.4S 44.8E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 172100Z POSITION NEAR 21.5S 44.3E. TROPICAL CYCLONE (TC) 13S (BINGIZA), LOCATED APPROXIMATELY 210 NM SOUTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTHEASTWARD AT 04 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY INDICATES THE LOW LEVEL CIRCULATION CENTER HAS TRACKED INLAND OVER THE SOUTHWESTERN COAST OF MADAGASCAR AND WEAKENED CONSIDERABLY. AS TC BINGIZA CONTINUES TO TRACK INLAND, MOUNTAINOUS TERRAIN WILL CAUSE THE SYSTEM TO DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVMARFCSTCEN). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 171800Z IS 16 FEET. REFER TO TROPICAL CYCLONE 15S (CARLOS) WARNINGS (WTXS32 PGTW) FOR TWELVE-HOURLY UPDATES. REFER TO TROPICAL CYCLONE 16S (DIANNE) WARNINGS (WTXS33 PGTW) FOR TWELVE-HOURLY UPDATES.//
Tropical cyclone tracks developed by Michael Bath using operational warnings and advisories.
Document: tropical_cyclone_bingiza_jtwc_advisories.htm
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