Tropical Cyclones
[Index] | Tropical Cyclone ZITA : JTWC Advisories |
Season 2006-2007 Summaries (Operational Data): [AU] [SIO] [SPAC] [SH] | |
---> Tropical Cyclone ZITA Track Map and Data |
WTPS22 PGTW 20070122 17:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE FORMATION ALERT/221651ZJAN2007// RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 180 NM EITHER SIDE OF A LINE FROM 13.5S 159.2W TO 21.7S 152.3W WITHIN THE NEXT 06 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 IM- AGERY AT 221500Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 13.5S 159.1W. THE SYSTEM IS MOVING SOUTHEASTWARD AT 15 KNOTS. 2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 12.1S 161.9W IS NOW LOCATED NEAR 13.5S 159.1W, APPROXIMATELY 605 NM WEST- NORTHWEST OF PAPEETE, TAHITI. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS IMPROVED ORGANIZATION OVER THE PAST 06 TO 12 HOURS WITH DEVELOPING BANDING OVER THE NORTHERN SEMI-CIRCLE. A 221204Z AMSU IMAGE DEPICTS A WELL-ORGANIZED LOW-LEVEL CIRCULATION CENTER WITH A BURST OF DEEP CONVECTION OVER THE CENTER. UPPER LEVEL ANAL- YSIS INDICATES THAT THE SYSTEM IS LOCATED WITHIN A FAVORABLE ENVIRONMENT WITH WEAK TO MODERATE VERTICAL WIND SHEAR AND GOOD DIFFLUENCE ALOFT ENHANCED BY STRONG NORTHWESTERLY FLOW. MAXIMUM SUSTAINED WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. DUE TO IMPROVED ORGAN- IZATION AND GOOD OUTFLOW ALOFT, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFCANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS GOOD. 3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 231700Z.// ========================================================================= WTPS31 PGTW 20070122 21:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// REF/A/NAVPACMETOCCEN PEARL HARBOR HI/221651ZJAN2007// AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. TROPICAL CYCLONE 08P WARNING NR 001 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 221800Z --- NEAR 14.0S 157.1W MOVEMENT PAST SIX HOURS - 110 DEGREES AT 17 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT REPEAT POSIT: 14.0S 157.1W --- FORECASTS: 12 HRS, VALID AT: 230600Z --- 15.5S 155.2W MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT BECOMING EXTRATROPICAL 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 - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 145 DEG/ 16 KTS --- 24 HRS, VALID AT: 231800Z --- 18.2S 153.3W MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 105 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 160 DEG/ 22 KTS --- 36 HRS, VALID AT: 240600Z --- 22.3S 151.6W MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 160 DEG/ 29 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 241800Z --- 27.7S 149.5W MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT EXTRATROPICAL --- REMARKS: 222100Z POSITION NEAR 14.4S 156.6W. TROPICAL CYCLONE (TC) 08P (NONAME), LOCATED APPROXIMATELY 505 NM WEST-NORTHWEST OF TAHITI, HAS TRACKED EAST-SOUTHEAST AT 17 KNOTS OVER THE PAST SIX HOURS. TC 08P HAS RAPIDLY INTENSIFIED OVER THE PAST 12 HOURS AT A GREATER-THAN-CLIMATOLOGICAL RATE. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A RAPIDLY DEVELOPING SYSTEM WITH TIGHTLY CURVED DEEP CONVECTIVE BANDING. A 221828Z SSMI IMAGE REVEALS A DEVELOPING EYE IN THE 85 GHZ CHANNEL WITH A BANDING FEATURE OVER THE WESTERN SEMI-CIRCLE. UPPER LEVEL ANALYSIS SHOWS STRONG NORTHWESTERLY FLOW ASSOCIATED WITH A MIDLATITUDE TROUGH WHICH IS POSITIONED SOUTHWEST OF THE SYSTEM. ANIMATED WATER VAPOR IMAGERY INDICATES THAT THIS SYNOPTIC PATTERN HAS SIGNIFI- CANTLY ENHANCED POLEWARD OUTFLOW OVER THE PAST 06 TO 12 HOURS. TC 08P WILL CONTINUE TRACKING SOUTHEAST TO SOUTH-SOUTHEASTWARD UNDER THE STEERING INFLUENCE OF THE LOW TO MID-LEVEL SUBTROPICAL RIDGE NORTHEAST OF THE SYSTEM. TC 08P IS FORECAST TO ACCELERATE AND COMPLETE EXTRATROPICAL TRANSITION BY TAU 48. THE LIMITED DYNAMIC AIDS ARE IN GOOD AGREEMENT WITH THIS SCENARIO. THIS WARNING SUPERSEDES AND CANCELS REF A, NAVPACMETOCCEN 221651Z JAN 2007 TROPICAL CYCLONE FORMATION ALERT (WTPS22 PGTW 221700) MAXIMUM SIGNIFICANT WAVE HEIGHT AT 221800Z IS 12 FEET. NEXT WARNINGS AT 230900Z AND 232100Z.// ========================================================================= WTPS31 PGTW 20070123 09:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ: TROPICAL CYCLONE 08P (ZITA) WARNING NR 002 1. TROPICAL CYCLONE 08P (ZITA) WARNING NR 002 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 230600Z --- NEAR 16.0S 154.5W MOVEMENT PAST SIX HOURS - 125 DEGREES AT 19 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 105 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT REPEAT POSIT: 16.0S 154.5W --- FORECASTS: 12 HRS, VALID AT: 231800Z --- 19.3S 151.7W MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 165 DEG/ 26 KTS --- 24 HRS, VALID AT: 240600Z --- 24.3S 150.2W MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT EXTRATROPICAL --- REMARKS: 230900Z POSITION NEAR 16.8S 153.8W. TROPICAL CYCLONE (TC) 08P (ZITA), LOCATED APPROXIMATELY 330 NM WEST-NORTHWEST OF TAHITI, HAS TRACKED SOUTHEASTWARD AT 19 KNOTS OVER THE PAST SIX HOURS. RECENT ANIMATED INFRARED AND WATER VAPOR SATELLITE IMAGERY SHOW THE SYSTEM TRACKING SOUTHEASTWARD UNDER THE STEERING INFLUENCE OF LOW TO MID LEVEL SUBTROPICAL RIDGING NORTHEAST OF THE SYSTEM AND BEGINNING TO ACCELERATE SOUTHEASTWARD AHEAD OF AN APPROACHING MIDLATITUDE TROUGH. GOOD POLEWARD UPPER LEVEL OUTFLOW AND LOW TO MODERATE VERTICAL WIND SHEAR HAVE ALLOWED THE SYSTEM TO FURTHER INTENSIFY OVER THE PAST 12 HOURS. HOWEVER, THE STORM IS EXPECTED TO WEAKEN SLOWLY DURING THE UPCOMING 12 HOURS AS INCREASED NORTHWESTERLY VERTICAL WIND SHEAR AND ENTRAIN- MENT OF DRIER AIR ASSOCIATED WITH THE APPROACHING TROUGH BEGIN TO HAVE AN EFFECT. THE STORM WILL CONTINUE TO INTERACT WITH THIS TROUGH DURING THE FORECAST PERIOD, BECOMING FULLY EXTRATROPICAL BY TAU 24. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 230600Z IS 14 FEET. NEXT WARNING AT 232100Z.// ========================================================================= WTPS31 PGTW 20070123 21:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL CYCLONE 08P (ZITA) WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 231800Z --- NEAR 19.8S 152.0W MOVEMENT PAST SIX HOURS - 150 DEGREES AT 22 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT REPEAT POSIT: 19.8S 152.0W --- FORECASTS: 12 HRS, VALID AT: 240600Z --- 24.2S 150.9W MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 105 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 175 DEG/ 26 KTS --- 24 HRS, VALID AT: 241800Z --- 29.4S 150.6W MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT EXTRATROPICAL --- REMARKS: 232100Z POSITION NEAR 20.9S 151.7W. TROPICAL CYCLONE (TC) 08P (ZITA), LOCATED APPROXIMATELY 200 NM SOUTHWEST OF TAHITI, HAS TRACKED SOUTH-SOUTHEASTWARD AT 22 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 231635Z TRMM IMAGE DEPICT A PARTIALLY-EXPOSED LOW-LEVEL CIRCULATION CENTER WITH DEEP CONVECTION SHEARED APPROXIMATELY 20 NM SOUTHEAST OF THE CENTER. SATELLITE IMAGERY ALSO SHOWS THAT THE CONVECTION HAS WEAKENED SIGNIFICANTLY UNDER MODERATE TO HIGH VERTICAL WIND SHEAR. TC 08P WILL CONTINUE TO ACCELERATE, TRACK RAPIDLY SOUTHWARD AND UNDERGO EXTRA-TROPICAL TRANSITION. THE SYSTEM IS FORECAST TO BECOME EXTRA-TROPICAL BY TAU 24. THE AVAILABLE DYNAMIC AIDS ARE IN EXCELLENT AGREEMENT WITH THIS SCENARIO. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 231800Z IS 14 FEET. NEXT WARNINGS AT 240900Z.// ========================================================================= WTPS31 PGTW 20070124 09:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL CYCLONE 08P (ZITA) WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 240600Z --- NEAR 23.4S 151.3W MOVEMENT PAST SIX HOURS - 165 DEGREES AT 19 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 BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT REPEAT POSIT: 23.4S 151.3W --- FORECASTS: 12 HRS, VALID AT: 241800Z --- 27.9S 150.9W MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT EXTRATROPICAL --- REMARKS: 240900Z POSITION NEAR 24.5S 151.2W. TROPICAL CYCLONE (TC) 08P (ZITA), LOCATED APPROXIMATELY 350 NM SOUTH-SOUTHWEST OF TAHITI, HAS TRACKED SOUTH-SOUTHEASTWARD AT 19 KNOTS OVER THE PAST SIX HOURS. THE STORM IS COMPLETING THE FINAL STAGES OF EXTRATROPICAL TRANSITION AHEAD OF AN APPROACHING MIDLATITUDE TROUGH AND IS EXPECTED TO BECOME FULLY EXTRATROPICAL BY TAU 12. RECENT ANIMATED INFRARED AND MICROWAVE SATELLITE IMAGERY SHOW THAT ALL DEEP CONVECTION HAS SHEARED TO THE SOUTH- EAST OF AN ELONGATING LOW LEVEL CIRCULATION CENTER. A 240559Z SSMIS IMAGE SHOWS DRY AIR TO THE SOUTHWEST OF THE STORM WRAPPING AROUND THE NORTHERN SEMICIRCLE AND INTO THE NORTHEASTERN QUADRANT. THEREFORE, THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVPACMETOCCEN). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 240600Z IS 12 FEET.//
Tropical cyclone tracks developed by Michael Bath using operational warnings and advisories.
Document: tropical_cyclone_zita_jtwc_advisories.htm
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