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 : 21/13/20072008 1.A SEVERE TROPICAL STORM 13 (KAMBA) 2.A POSITION 2008/03/12 AT 0000 UTC : 24.5S / 79.2E (TWENTY FOUR DECIMAL FIVE DEGREES SOUTH AND SEVENTY NINE DECIMAL TWO DEGREES EAST) 3.A DVORAK ANALYSIS : 2.5/4.0 /W 4.A CENTRAL PRESSURE : 980 HPA 5.A MAX AVERAGE WIND SPEED (10 MN) : 55 KT 6.A EXTENSION OF WINDS BY QUADRANTS (KM): 30 KT NE: 100 SE: 350 SO: 400 NO: 080 50 KT NE: 040 SE: 070 SO: 070 NO: 040 7.A FIRST CLOSED ISOBARE (PRESSURE / AVERAGE DIAM): 1008 HPA / 500 KM 8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: DEEP 1.B FORECASTS: 12H: 2008/03/12 12 UTC: 25.9S/80.4E, MAX WIND=045KT, EXTRATROPICAL. 24H: 2008/03/13 00 UTC: 28.4S/79.9E, MAX WIND=040KT, EXTRATROPICAL. 36H: 2008/03/13 12 UTC: 30.0S/78.7E, MAX WIND=035KT, EXTRATROPICAL. 48H: 2008/03/14 00 UTC: 31.9S/78.8E, MAX WIND=035KT, EXTRATROPICAL. 60H: 2008/03/14 12 UTC: 33.1S/78.7E, MAX WIND=035KT, EXTRATROPICAL. 72H: 2008/03/15 00 UTC: 33.4S/77.8E, MAX WIND=035KT, EXTRATROPICAL. 2.B OTHER INFORMATIONS: T=2.5+ AND CI=4.0+ SYSTEM IS WEAKENING RAPIDLY OVER SEA SURFACE TEMPERATURE COOLER AND COOLER (LESS THAN 25 CELSIUS DEGREES FOR THE MOMENT, AND LOWER THAN 23 DEGREES CELSIUS SOUTH OF 30 SOUTH), UNDERGOING ALSO AN INCREASING NORTHWESTERLY VERTICAL WINDSHEAR, WHICH DISORGANIZES AND PUSHSES THUNDERSTORM CONVECTIVE ACTIVITY SOUTHEASTARDS. THE LLCC IS NOW TOTALLY EXPOSED NORTHWEST OF CONVECTION, AND IS ELONGATED. STRONGEST WINDS EXTEND FAR IN THE SOUTH DUE TO THE GRADIENT EFFECT WITH THE SUBTROPICAL HIGH PRESSURES. IT SHOULD BECOME EXTRATROPICAL WITHIN THE NEXT 12 HOURS, WITH A NON-SYMETRIC STRUCTURE.