** WTIO20 FMEE 261803 *** SECURITE GALE WARNING FOR METAREA VIII (S) ISSUED BY METEO-FRANCE/TROPICAL CYCLONE CENTRE/LA REUNION 26/03/2005 AT 1800 UTC. WARNING NUMBER: 023/16 (SOUTH-WEST INDIAN OCEAN) 10 MINUTES AVERAGE WIND SPEED IN KNOTS (KT) (WIND GUSTS AT SEA MAY BE ABOUT 40% STRONGER THAN THE AVERAGED WIND). MINIMUM SEA LEVEL PRESSURE IN HECTOPASCALS (HPA) (INDICATIVE FIGURE). GALE WARNING BEGINNING OF VALIDITY: SATURDAY 26/03/2005 AT 1800 UTC. PHENOMENON: MODERATE TROPICAL STORM 16 (HENNIE) 986 HPA POSITION: 25.0S / 61.8E (TWENTY FIVE DECIMAL ZERO DEGREES SOUTH AND SIXTY ONE DECIMAL EIGHT DEGREES EAST) AT 1800 UTC MOVEMENT: SOUTH-SOUTH-EAST 6 KT THREAT AREAS: SQUALLY WEATHER EXISTS WITHIN 100 NM RADIUS OF THE CENTRE, EXTENDING UP TO 500 NM OF THE CENTRE IN THE EASTERN SECTOR. GALE FORCE WINDS 35/45KT AND VERY ROUGH TO HIGH SEAS WITHIN 30 NM RADIUS OF THE CENTRE, EXTENDING UP TO 150 NM IN THE SOUTHEASTERN QUADRANT. NEAR GALE FORCE WINDS 30 KT AND ROUGH TO VERY ROUGH SEAS WITHIN 50 NM RADIUS OF THE CENTRE, EXTENDING UP TO 200 NM IN THE SOUTHEASTERN QUADRANT . STRONG GUSTS UNDER SQUALLS. FORECAST POSITION AND INTENSITY: 12H, VALID 2005/03/27 AT 06 UTC: 26.2S / 62.2E, MAX WIND = 40 KT, BECOMING EXTRATROPICAL. 24H, VALID 2005/03/27 AT 18 UTC: 27.5S / 62.1E, MAX WIND = 40 KT, EXTRATROPICAL. OTHER INFORMATIONS: CONVECTIVE ACTIVITY IS REBUILDING DURING THIS NIGHT, DUE TO THE DIURNAL CYCLE. HENNIE REMAINS UNDER THE INFLUENCE OF A STRONG WESTERLY VERTICAL WINDSHEAR WHICH DESORGANIZES THE SYSTEM. IT SHOULD TRACK GLOBALY SOUTHWARDS AND BECOME EXTRATROPICAL DURING THE NEXT 24 TO 36 HOURS. WINDS REMAIN STRONG FAR FROM THE CENTER, MAINLY IN THE SOUTHEASTERN QUADRANT DUE TO THE GRADIENT WITH THE SUBTROPICAL HIGH PRESSURES.= ** WTIO30 FMEE 261811 *** RSMC / TROPICAL CYCLONE CENTRE / LA REUNION TROPICAL CYCLONE FORECAST WARNING (SOUTH-WEST INDIAN OCEAN) 0.A WARNING NUMBER : 22/16/20042005 1.A MODERATE TROPICAL STORM 16 (HENNIE) 2.A POSITION 2005/03/26 AT 1800 UTC : 25.0S / 61.8E (TWENTY FIVE DECIMAL ZERO DEGREES SOUTH AND SIXTY ONE DECIMAL EIGHT DEGREES EAST) 3.A DVORAK ANALYSIS : 3.0/3.5 /W 0.5/24 H 4.A CENTRAL PRESSURE : 986 HPA 5.A MAX AVERAGE WIND SPEED (10 MN) : 45 KT 6.A EXTENSION OF WINDS BY QUADRANTS (KM): 30 KT NE: 250 SE: 400 SO: 250 NO: 080 7.A FIRST CLOSED ISOBARE (PRESSURE / AVERAGE DIAM): 1004 HPA / 900 KM 8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: MEDIUM 1.B FORECASTS: 12H: 2005/03/27 06 UTC: 26.2S/62.2E, MAX WIND=040KT, BECOMING EXTRATROPICAL. 24H: 2005/03/27 18 UTC: 27.5S/62.1E, MAX WIND=040KT, EXTRATROPICAL. 36H: 2005/03/28 06 UTC: 28.8S/61.8E, MAX WIND=040KT, EXTRATROPICAL. 48H: 2005/03/28 18 UTC: 30.2S/61.5E, MAX WIND=040KT, EXTRATROPICAL. 60H: 2005/03/29 06 UTC: 31.8S/61.6E, MAX WIND=035KT, EXTRATROPICAL. 72H: 2005/03/29 18 UTC: 33.6S/62.1E, MAX WIND=035KT, EXTRATROPICAL. 2.B OTHER INFORMATIONS: T=3.0- ; CI=3.5-. CONVECTIVE ACTIVITY IS REBUILDING DURING THIS EVENNING, DUE TO THE DIURNAL CYCLE, HIDING THE LLCC. NEVERTHELESS, HENNIE REMAINS STRONGLY WESTERLY SHEARED WITH THE LLCC DECOUPLED OF DEEP CONVECTIVE ACTIVITY. IT SHOULD TRACK GLOBALY SOUTHWARDS AND BECOME EXTRATROPICAL DURING THE NEXT 24 TO 36 HOURS. WINDS REMAIN STRONG FAR FROM THE CENTER, MAINLY IN THE SOUTHEASTERN QUADRANT DUE TO THE GRADIENT WITH THE SUBTROPICAL HIGH PRESSURES.= ** WTXS31 PGTW 262100 *** MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL CYCLONE 24S (HENNIE) WARNING NR 011 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 261800Z7 --- NEAR 25.0S7 61.7E4 MOVEMENT PAST SIX HOURS - 160 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 055 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT REPEAT POSIT: 25.0S7 61.7E4 --- FORECASTS: 12 HRS, VALID AT: 270600Z5 --- 26.0S8 62.1E9 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT EXTRATROPICAL VECTOR TO 24 HR POSIT: 145 DEG/ 05 KTS --- 24 HRS, VALID AT: 271800Z8 --- 26.8S6 62.7E5 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT EXTRATROPICAL --- REMARKS: 262100Z1 POSITION NEAR 25.3S0 61.8E5. TROPICAL CYCLONE (TC) 24S (HENNIE), LOCATED APPROXIMATELY 385 NM SOUTHEAST OF MAURITIUS, HAS TRACKED SOUTH-SOUTHEASTWARD AT 05 KNOTS OVER THE PAST 06 HOURS. RECENT MICROWAVE IMAGERY IN- DICATES THAT THE LOW LEVEL CIRCULATION CENTER HAS BECOME FULLY EXPOSED TO THE NORTHWEST OF THE REMAINING CONVECTION. INCREAS- ING WESTERLY SHEAR AND COOLER SEA SURFACE TEMPERATURES ARE FACILITATING THE TRANSITION OF TC 24S INTO AN EXTRATROPICAL CYCLONE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 261800Z7 IS 20 FEET. NEXT WARNING AT 270900Z8.//