Tropical
Cyclones
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Tropical Cyclone ZELIA [Australian Region][South Indian Ocean][South Pacific Ocean][Southern Hemisphere][Summaries and Track Data] |
WTXS31 PGTW 981007 03:00z SUBJ: TROPICAL CYCLONE WARNING 1. TROPICAL CYCLONE 03S WARNING NR 001 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 070000Z7 --- 11.1S3 91.6E6 MOVEMENT PAST SIX HOURS - 135 DEGREES AT 03 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 REPEAT POSIT: 11.1S3 91.6E6 --- FORECASTS: 12 HRS, VALID AT: 071200Z0 --- 11.6S8 92.0E1 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 035 KT WINDS - 045 NM VECTOR TO 24 HR POSIT: 130 DEG/ 06 KTS --- 24 HRS, VALID AT: 080000Z8 --- 12.3S6 92.9E0 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 045 NM VECTOR TO 36 HR POSIT: 135 DEG/ 07 KTS --- 36 HRS, VALID AT: 081200Z1 --- 13.2S6 93.9E1 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE 045 NM ELSEWHERE VECTOR TO 48 HR POSIT: 130 DEG/ 08 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 090000Z9 --- 14.2S7 95.2E6 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 055 NM NORTHEAST SEMICIRCLE 045 NM ELSEWHERE --- REMARKS: 070300Z0 POSITION 11.2S4 91.7E7. TROPICAL CYCLONE 03S IS QUASI-STATIONARY IN THE SOUTHERN INDIAN OCEAN . THE SYSTEM HAS SIGNIFICANTLY IMPROVED ITS LOW-LEVEL ORGANIZATION IN SPITE OF CONTINUED UPPER-LEVEL SHEAR. THE WARNING POSITION AND INTENSI TY ARE BASED ON 070130Z VISIBLE SATELLITE IMAGERY. THE SYSTEM IS EXPECTED TO REMAIN QUASI-STATIONARY FOR ABOUT 24 HOURS BEFORE MOVING SOUTHEASTWARD UNDER THE INFLUENCE OF RIDGING LO CATED TO ITS WEST. MODERATE INTENSIFICATION IS FORECAST AS THE SYSTEM CONTINUES TO CONSOL ========================================================================= WTXS31 PGTW 981007 15:00z 1. TROPICAL CYCLONE 03S WARNING NR 002 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 071200Z0 --- 12.0S3 93.9E1 MOVEMENT PAST SIX HOURS - 120 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 REPEAT POSIT: 12.0S3 93.9E1 --- FORECASTS: 12 HRS, VALID AT: 080000Z8 --- 13.1S5 95.1E5 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 24 HR POSIT: 135 DEG/ 08 KTS --- 24 HRS, VALID AT: 081200Z1 --- 14.2S7 96.2E7 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 36 HR POSIT: 135 DEG/ 08 KTS --- 36 HRS, VALID AT: 090000Z9 --- 15.3S9 97.3E9 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 48 HR POSIT: 140 DEG/ 08 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 091200Z2 --- 16.6S3 98.4E1 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 071500Z3 POSITION 12.3S6 94.2E5. TROPICAL CYCLONE 03S HAS BEEN TRACKING EAST-SOUTHEASTWARD AT 10 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 071130Z2 INFRARED SATELLITE IMAGERY AND A 071143Z6 MICROWAVE IMAGER PASS. THE WARNING INTENSITY OF 35 KNOTS IS BASED ON 070600Z3 SURFACE SYNOPTIC OBSERVATIONS SHOWING 25 KNOT (INTERPOLATED FROM TEN-MINUTE AVERAGES) WINDS WITHIN 3 DEGREES OF THE SYSTEM=S CENTER. TROPICAL CYCLONE 03S HAS BEEN TRACKING EAST-SOUTHEASTWARD UNDER THE STEERING FLOW FROM THE SUBTROPICAL RIDGE TO ITS SOUTHEAST. THIS SHOULD REMAIN THE DOMINANT STEERING INFLUENCE THROUGHOUT THE FORECAST PERIOD. ANIMATED INFRARED AND WATER VAPOR IMAGERY SHOWS THAT TROPICAL CYCLONE 03S IS BEGINNING TO EXPERIENCE SHEAR FROM AN APPROACHING MID-LATITUDE TROUGH. THE INCREASING VERTICAL WIND SHEAR FROM THE PASSAGE OF THIS TROUGH AND THE FORECASTED MOVEMENT OF THE SYSTEM OVER INCREASINGLY COOLER SEA SURFACE TEMPERATURES SHOULD INHIBIT ANY FURTHER DEVELOPMENT OF TROPICAL CYCLONE 03S. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 071200Z0 IS 12 FEET. NEXT WARNINGS AT 080300Z1 (DTG 080155Z9) AND 081500Z4 (DTG 081355Z2).// ========================================================================= WTXS31 PGTW 981008 03:00z SUBJ: TROPICAL CYCLONE WARNING 1. TROPICAL CYCLONE 03S WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 080000Z8 --- 14.0S5 95.4E8 MOVEMENT PAST SIX HOURS - 150 DEGREES AT 13 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 REPEAT POSIT: 14.0S5 95.4E8 --- FORECASTS: 12 HRS, VALID AT: 081200Z1 --- 16.1S8 96.9E4 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 24 HR POSIT: 145 DEG/ 14 KTS --- 24 HRS, VALID AT: 090000Z9 --- 18.4S3 98.7E4 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 36 HR POSIT: 145 DEG/ 15 KTS --- 36 HRS, VALID AT: 091200Z2 --- 20.8S0 100.6E7 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 48 HR POSIT: 145 DEG/ 17 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 100000Z1 --- 23.5S0 102.8E1 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 080300Z1 POSITION 14.5S0 95.8E2. TROPICAL CYCLONE 03S HAS TRACKED SOUTHEASTWARD AT 13 KNOTS FOR THE PAST 6 HOURS. THE WARNING POSITION AND INTENSITY ARE BASED ON 072330Z5 INFRARED SATELLITE IMAGERY. TC 03S HAS BEEN GOVERNED BY THE STEERING FLOW OF THE SUBTROPICAL RIDGE TO ITS EAST. THIS RIDGE IS EXPECTED TO REMAIN THE DOMINANT STEERING INFLUENCE THROUGHOUT THE FORECAST PERIOD. ADDITIONALLY, ANIMATED INFRARED AND WATER VAPOR IMAGERY SHOWS TC 03S IS EXPERIENCING SHEAR FROM AN APPROACHING MID-LATITUDE TROUGH. THE MID-LATITUDE SYSTEM SHOULD SIGNIFICANTLY MODIFY TC 03S WITH BOTH INCREASED VERTICAL WIND SHEAR AND ACCELERATED MOTION, SUBSTANTIALLY WEAKENING TC 03S. THE MOVEMENT OF THE SYSTEM OVER INCREASINGLY COOLER SEA SURFACE TEMPERATURES SHOULD FURTHER INHIBIT THE DEVELOPMENT OF TROPICAL CYCLONE 03S AS WELL. THE SYSTEM IS FORECAST TO DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE BY THE END OF THE FORECAST PERIOD. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 080000Z8 IS 12 FEET. REFER TO WWIO30 PGFW FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 081500Z4 (DTG 081355Z2) AND 090300Z2 (DTG 090155Z0).// ========================================================================= WTXS31 PGTW 981008 15:00z 1. TROPICAL CYCLONE 03S WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 081200Z1 --- 15.1S7 95.3E7 MOVEMENT PAST SIX HOURS - 170 DEGREES AT 09 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 RADIUS OF 035 KT WINDS - 040 NM EAST SEMICIRCLE 030 NM ELSEWHERE REPEAT POSIT: 15.1S7 95.3E7 --- FORECASTS: 12 HRS, VALID AT: 090000Z9 --- 16.5S2 95.9E3 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 24 HR POSIT: 150 DEG/ 08 KTS --- 24 HRS, VALID AT: 091200Z2 --- 17.8S6 96.7E2 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 36 HR POSIT: 145 DEG/ 07 KTS --- 36 HRS, VALID AT: 100000Z1 --- 19.0S0 97.6E2 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 48 HR POSIT: 130 DEG/ 09 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 101200Z4 --- 20.1S3 99.1E9 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 081500Z4 POSITION 15.4S0 95.4E8. TROPICAL CYCLONE 03S HAS TRACKED SOUTHWARD AT 9 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION AND INTENSITY (45 KNOTS) ARE BASED ON THE 081130Z3 INFRARED SATELLITE IMAGERY ANALYSIS TECHNIQUES. SATELLITE IMAGERY AND ANIMATION INDICATE THE SYSTEM HAS BECOME BETTER ORGANIZED OVER THE PAST 6 HOURS AND INTENSIFIED FROM 35 TO A 45 KNOT SYSTEM. SATELLITE ANIMATION OF INFRARED AND WATER VAPOR IMAGERY INDICATE THE SYSTEM HAS MOVED IN BETWEEN TWO HIGH PRESSURE AREAS. IMAGERY ALSO INDICATES THE SHEAR HAS WEAKENED OVER THE SYSTEM CENTER ALLOWING IT TO INTENSIFY SLIGHTLY. SATELLITE ANIMATION AND UNIV. OF WISCONSIN WATER VAPOR PRODUCTS ALSO INDICATE GOOD OUTFLOW AND INCREASING VERTICAL WINDSHEAR JUST SOUTH OF THE SYSTEM AS THE TAIL END OF A MID-LATITUDE TROUGH TRANSITS THE AREA. TC 03S SHOULD CONTINUE TO MOVE SOUTH-SOUTHEAST THROUGHOUT THE PERIOD UNDER THE STEERING INFLUENCE OF THE HIGH PRESSURE RIDGE TO THE EAST. AS THE SYSTEM CONTINUES TO MOVE SOUTHWARD IT SHOULD GRADUALLY INCREASE FORWARD MOTION AS IT GETS CAUGHT UP IN THE WESTERLIES. TC 03S IS FORECAST TO WEAKEN THROUGHOUT THE PERIOD AS IT MOVES FURTHER SOUTH INTO A GREATER VERTICAL WINDSHEAR ENVIRONMENT AND COOLER SEA SURFACE TEMPERATURES. AS SUCH, THE INTENSITY FORECAST IS FOR GRADUAL WEAKENING AND DISSIPATION AS A SIGNIFICANT TROPICAL CYCLONE BY THE 48 HOUR POINT. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 081200Z1 IS 15 FEET. REFER TO WWIO31 PGFW FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 090300Z2 (DTG 090155Z0) AND 091500Z5 (DTG 091355Z3).// ========================================================================= WTXS31 PGTW 981009 03:00z 1. TROPICAL CYCLONE 03S (ZELIA) WARNING NR 005 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POS 8 090000Z9 --- 17.5S3 96.4E9 MOVEMENT PAST SIX HOURS - 155 DEGREES AT 13 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 RADIUS OF 035 KT WINDS - 040 NM EAST SEMICIRCLE 030 NM ELSEWHERE REPEAT POSIT: 17.5S3 96.4E9 --- FORECASTS: 12 HRS, VALID AT: 091200Z2 --- 19.6S6 97.4E0 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 035 KT WINDS - 040 NM NORTHEAST SEMICIRCLE 030 NM ELSEWHERE VECTOR TO 24 HR POSIT: 140 DEG/ 13 KTS --- 24 HRS, VALID AT: 100000Z1 --- 21.7S0 99.2E0 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 36 HR POSIT: 130 DEG/ 14 KTS --- 36 HRS, VALID AT: 101200Z4 --- 23.4S9 101.5E7 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 48 HR POSIT: 110 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 110000Z2 --- 24.4S0 104.6E1 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 090300Z2 POSITION 18.0S9 96.7E2. TROPICAL CYCLONE 03S (ZELIA) HAS TRACKED TOWARDS THE SOUTH-SOUTHEAST AT 13 KNOTS FOR THE PAST 6 HOURS. THE WARNING POSITION AND INTENSITY (45 KNOTS) ARE BASED ON THE 082330Z6 INFRARED SATELLITE IMAGERY. THE SYSTEM HAS REMAINED IN AN AREA OF FAVORABLE UPPER-LEVEL CONDITIONS FOR THE PAST 12 HOURS. HOWEVER, ANIMATED WATER VAPOR IMAGERY AND UW-CIMSS PRODUCTS INDICATE AN AREA OF GREATER VERTICAL WINDSHEAR JUST SOUTH OF THE SYSTEM AS A RESULT OF THE MID-LATITUDE TROUGH TRANSITING THE AREA. TC 03S (ZELIA)IS EXPECTED TO CONTINUE MOVING SOUTHEASTWARD THROUGHOUT THE PERIOD UNDER THE STEERING INFLUENCE OF THE RIDGE OF HIGH PRESSURE TO ITS EAST. THE SYSTEM IS FORECAST TO GRADUALLY INCREASE ITS FORWARD MOTION AS IT GETS CAUGHT UP IN THE STRONG WESTERLIES. TC 03S (ZELIA) IS ALSO FORECAST TO WEAKEN THROUGHOUT THE PERIOD AS IT EXPERIENCES INCREASING VERTICAL WIND SHEAR AND COOLER SEA SURFACE TEMPERATURES. THE SYSTEM IS FORECAST TO DISSIPATE BY THE END OF THE 48-HOUR PERIOD. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090000Z9 IS 15 FEET. REFER TO WWIO30 PGFW FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 091500Z5 (DTG 091355Z3) AND 100300Z4 (DTG100155Z2).// ========================================================================= WTXS31 PGTW 981009 15:00z COR 1. TROPICAL CYCLONE 03S (ZELIA) WARNING NR 006 RELOCATED CORRECTED 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 091200Z2 --- 14.5S0 96.5E0 MOVEMENT PAST SIX HOURS - 090 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 REPEAT POSIT: 14.5S0 96.5E0 --- FORECASTS: 12 HRS, VALID AT: 100000Z1 --- 14.8S3 97.1E7 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 24 HR POSIT: 160 DEG/ 03 KTS --- 24 HRS, VALID AT: 101200Z4 --- 15.4S0 97.3E9 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 36 HR POSIT: 190 DEG/ 03 KTS --- 36 HRS, VALID AT: 110000Z2 --- 16.0S7 97.2E8 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 48 HR POSIT: 210 DEG/ 03 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 111200Z5 --- 16.5S2 96.9E4 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 091500Z5 POSITION 14.6S1 96.6E1. THE POSITION OF TROPICAL CYCLONE 03S (ZELIA) HAS BEEN RELOCATED. RELOCATION WAS DUE TO EXTENSIVE SHEARING OCCURRING OVER THE PAST 18 HOURS. SATELLITE IMAGERY SHOWS THE LOW-LEVEL CIRCULATION (WARNING POSITION) IS COMPLETELY EXPOSED AND APPROXIMATELY 230NM NORTHWEST OF THE CONVECTION. SATELLITE ANIMATION INDICATES TC 03S HAS MOVED EASTWARD AT 8 KNOTS OVER THE PAST 6 HOURS. CURRENT POSITION AND INTENSITY (35 KTS) ARE BASED ON INFRARED (091130Z4) AND MICROWAVE (091122Z5) SATELLITE ANALYSIS. ANIMATED SATELLITE IMAGERY REVEALS THE SUDDEN SHIFT, BETWEEN 082100Z1-090300Z2, IN THE TRACK AS THE VERTICAL WINDSHEAR INCREASED SEPARATING THE LOW-LEVEL CIRCULATION FROM THE UPPER-LEVEL CONVECTION OF THE SYSTEM. TC 03S IS FORECAST TO BEGIN TRACKING MORE SOUTHEASTWARD UNDER THE MID-LEVEL ENVIRONMENTAL FLOW OVER THE NEXT 12 HOURS. AFTERWARDS, TC 03S SHOULD BEGIN MOVING WITH THE LOW-LEVEL FLOW AND TRACK SOUTHWESTWARD. FORWARD MOTION SHOULD SLOW AS TC 03S BEGINS TRANSITIONING BETWEEN THE STEERING REGIMES. AS TC 03S REMAINS A LOW-LEVEL SYSTEM AND CONTINUES TO BE SHEARED, THE INTENSITY WILL CONTINUE TO WEAKEN AND TC 03S SHOULD DROP BELOW WARNING CRITERIA (35 KTS) IN THE NEXT 24 HOURS AND DISSIPATE BY 48 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 091200Z2 IS 15 FEET. REFER TO WWIO31 PGFW FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 100300Z4 (DTG 100155Z2) AND 101500Z7 (DTG 101355Z5).// ========================================================================= WTXS31 PGTW 981010 03:00z SUBJ: TROPICAL CYCLONE WARNING 1. TROPICAL CYCLONE 03S (ZELIA) WARNING NR 007 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 100000Z1 --- 14.3S8 97.1E7 MOVEMENT PAST SIX HOURS - 090 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 REPEAT POSIT: 14.3S8 97.1E7 --- FORECASTS: 12 HRS, VALID AT: 101200Z4 --- 14.4S9 97.5E1 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 24 HR POSIT: 130 DEG/ 02 KTS --- 24 HRS, VALID AT: 110000Z2 --- 14.7S2 97.9E5 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 36 HR POSIT: 180 DEG/ 03 KTS --- 36 HRS, VALID AT: 111200Z5 --- 15.2S8 98.0E7 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 100300Z4 POSITION 14.3S8 97.2E8. TROPICAL CYCLONE 03S (ZELIA) IS MOVING EASTWARD AT 4 KNOTS. WARNING POSITION AND INTENSITY ARE BASED ON 092330Z INFRARED SATELLITE IMAGERY. THE SYSTEM CONTINUES TO EXPERIENCE SIGNIFICANT VERTICAL WIND SHEAR BUT IS MAINTAINING LOW-LEVEL ORGANIZATION. THERE IS NO SIGNIFICANT CHANGE IN THE FORECAST PHILOSOPHY. THE SYSTEM IS EXPECTED TO WEAKEN TO BELOW SIGNIFICANT TROPICAL CYCLONE STRENGTH WITHIN THE NEXT 36 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090000Z IS 14 FEET. NEXT WARNINGS AT 101500Z7 (DTG 101355Z5) AND 110300Z5 (DTG 110155Z3).// ========================================================================= WTXS31 PGTW 981010 15:00z 1. TROPICAL CYCLONE 03S (ZELIA) WARNING NR 008 01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 101200Z4 --- 13.6S0 95.4E8 MOVEMENT PAST SIX HOURS - 305 DEGREES AT 07 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 DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 13.6S0 95.4E8 --- FORECASTS: 12 HRS, VALID AT: 110000Z2 --- 13.1S5 94.3E6 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 101500Z7 POSITION 13.5S9 95.1E5. TROPICAL CYCLONE 03S (ZELIA) HAS BEEN TRACKING NORTHWESTWARD AT 7 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 101130Z6 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON CONTINUITY WITH THE PREVIOUS FORECAST. TROPICAL CYCLONE 03S (ZELIA) IS AN EXPOSED LOW-LEVEL CIRCULATION WITH NO REMAINING DEEP CONVECTION. IN ADDITION, RECENT VISIBLE AND MULTI-SPECTRAL IMAGERY SHOWS THE SYSTEM=S LOW-LEVEL IS BECOMING ELONGATED AND LESS TIGHTLY WOUND. TROPICAL CYCLONE 03S (ZELIA) IS FORECAST TO CONTINUE TRACKING NORTHWESTWARD IN LOW-LEVEL STEERING AND DISSIPATE OVER WATER. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101200Z4 IS 12 FEET. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVPACMETOCCEN WEST GU). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION.//
Document: zelia.htm
Updated: 26th December 2006 |
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