Direction Interrégionale de LA REUNION
B.P.4    97491 Ste Clotilde Cedex
Téléphone                02.62.92.11.00
Fax exploitation      02.62.92.11.48
Fax direction           02.62.92.11.47

WTIO22 FMEE 270600 SECURITE GALE WARNING FOR METAREA VII AND METAREA VIII (S) ISSUED BY METEO-FRANCE/TROPICAL CYCLONE CENTRE/LA REUNION 27/02/2007 AT 0600 UTC. WARNING NUMBER: 025/11 (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: TUESDAY 27/02/2007 AT 0600 UTC. PHENOMENON: EXTRATROPICAL DEPRESSION 11 (EX-HUMBA) 990 HPA POSITION: WITHIN 30 NM RADIUS OF POINT 26.0S / 78.9E (TWENTY SIX DECIMAL ZERO DEGREES SOUTH AND SEVENTY EIGHT DECIMAL NINE DEGREES EAST) AT 0600 UTC MOVEMENT: SOUTH-SOUTH-EAST 9 KT THREAT AREAS: SQUALLY WEATHER EXISTS WITHIN 200 NM RADIUS FROM THE CENTER, EXTENDING UP TO MORE THAN 500 NM IN THE SOUTHEASTERN QUADRANT. GALE FORCE WINDS 35/45KT AND VERY ROUGH SEAS TO HIGH SEAS WITHIN 150 NM RADIUS FROM THE CENTER EXTENDING UP TO 350 NM IN THE SOUTHWESTERN SEMI-QUADRANT AND UP TO 450 NM IN THE SOUTHEASTERN QUADRANT. NEAR GALE FORCE WINDS 30KT AND ROUGH TO VERY ROUGH SEAS WITHIN 200 NM RADIUS OF THE CENTER, EXTENDING UP TO 500 NM IN THE SOUTERN SEMI-CIRCLE STRONG GUSTS UNDER SQUALLS. FORECAST POSITION AND INTENSITY: 12H, VALID 2007/02/27 AT 18 UTC: 28.0S / 79.6E, MAX WIND = 40 KT, EXTRATROPICAL. 24H, VALID 2007/02/28 AT 06 UTC: 29.4S / 79.6E, MAX WIND = 40 KT, EXTRATROPICAL. OTHER INFORMATIONS: HUMBA HAS DONE ITS EXTRATROPICAL TRANSITION , OVER WATER WHERE SST ARE UNDER 26 DEGRES CELSIUS AND WITHIN A STRONGLY NORTHWESTERLY SHEARED ENVIRONMENT. RESIDUAL ASSOCIATED THUNDERY ACTIVITY IS SOUTHEASTWARDS AWAY FROM THE CENTRE. HOWEVER, THE LOW LEVEL CLOCKWISE CIRCULATION REMAINS RATHER BROAD, AND STRONG WINDS EXTEND FAR IN THE SOUTH DUE TO THE GRADIENT EFFECT WITH THE SUBTROPICAL HIGH PRESSURES, CENTRED RIGHT INTO THE SOUTH OF THE SYSTEM. HUMBA IS EXPECTED TO KEEP ON TRACKING MAINLY SOUTHWARDS WITHIN THE NEXT 24 HOURS THEN QUICKLY SOUTHEASTWARDS TOWARDS THE MID-LATITUDES BEYOND.