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

RSMC / TROPICAL CYCLONE CENTRE / LA REUNION TROPICAL CYCLONE FORECAST WARNING (SOUTH-WEST INDIAN OCEAN) 0.A WARNING NUMBER : 27/11/20062007 1.A EXTRATROPICAL DEPRESSION 11 (EX-HUMBA) 2.A POSITION 2007/02/27 AT 1800 UTC : WITHIN 30 NM RADIUS OF POINT 29.1S / 79.2E (TWENTY NINE DECIMAL ONE DEGREES SOUTH AND SEVENTY NINE DECIMAL TWO DEGREES EAST) 3.A DVORAK ANALYSIS : / 4.A CENTRAL PRESSURE : 985 HPA 5.A MAX AVERAGE WIND SPEED (10 MN) : 45 KT 6.A EXTENSION OF WINDS BY QUADRANTS (KM): 30 KT NE: 350 SE: 900 SO: 900 NO: 250 7.A FIRST CLOSED ISOBARE (PRESSURE / AVERAGE DIAM): 1004 HPA / 1200 KM 8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: MEDIUM 1.B FORECASTS: 12H: 2007/02/28 06 UTC: 30.1S/79.2E, MAX WIND=045KT , EXTRATROPICAL. 24H: 2007/02/28 18 UTC: 30.4S/79.0E, MAX WIND=045KT , EXTRATROPICAL. 36H: 2007/03/01 06 UTC: 30.2S/80.1E, MAX WIND=045KT , EXTRATROPICAL. 48H: 2007/03/01 18 UTC: 30.7S/82.1E, MAX WIND=045KT , EXTRATROPICAL. 60H: 2007/03/02 06 UTC: 32.7S/84.8E, MAX WIND=040KT , EXTRATROPICAL. 72H: 2007/03/02 18 UTC: 36.1S/87.6E, MAX WIND=040KT , EXTRATROPICAL. 2.B OTHER INFORMATIONS: UNDERGOING AN UNFAVOURABLE ENVIRONMENT, "HUMBA" FOLLOWED AN EXTRATROPICAL TRANSITION. THE CLOCKWISE CIRCULATION REMAINS VERY BROAD (AS DEPICTED BY DMSP-F15 1450Z IMAGERY), MAXIMUM WINDS EXTEND FAR FROM THE CENTER IN THE SOUTHERN SEMI-CIRCLE DUE TO THE GRADIENT WITH THE SUBTROPICAL HIGH. "HUMBA" IS EXPECTED TO SLOW DOWN ON ITS SOUTHWARDS TRACK DURING THE NEXT 36 HOURS, BEFORE SHIFTING SOUTHEASTWARDS.