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 : 26/12/20082009 1.A MODERATE TROPICAL STORM 12 (JADE) 2.A POSITION 2009/04/10 AT 1200 UTC : 25.0S / 52.5E (TWENTY FIVE DECIMAL ZERO DEGREES SOUTH AND FIFTY TWO DECIMAL FIVE DEGREES EAST) MOVEMENT : SOUTH-SOUTH-EAST 11 KT 3.A DVORAK ANALYSIS : 2.5/2.5 /W 0.5/6 H 4.A CENTRAL PRESSURE : 995 HPA 5.A MAX AVERAGE WIND SPEED (10 MN) : 35 KT RADIUS OF MAXIMUM WINDS (RMW) : 40 KM 6.A EXTENSION OF WINDS BY QUADRANTS (KM): 30 KT NE: 150 SE: 300 SO: 150 NO: 100 7.A FIRST CLOSED ISOBARE (PRESSURE / AVERAGE DIAM): 1008 HPA / 900 KM 8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: MEDIUM 1.B FORECASTS: 12H: 2009/04/11 00 UTC: 27.1S/54.2E, MAX WIND=030KT, BECOMING EXTRATROPICAL. 24H: 2009/04/11 12 UTC: 32.4S/57.1E, MAX WIND=040KT, EXTRATROPICAL. 36H: 2009/04/12 00 UTC: 35.7S/57.8E, MAX WIND=040KT, EXTRATROPICAL. 48H: 2009/04/12 12 UTC: 39.4S/61.5E, MAX WIND=030KT, EXTRATROPICAL. 60H: 2009/04/13 00 UTC: 45.4S/66.8E DISSIPATING. 72H: 2009/04/13 12 UTC: DISSIPATED. 2.B OTHER INFORMATIONS: T=2.5-, CI=2.5+ AFTER A RENEWAL OF ACTIVITY LAST NIGHT AND THIS MORNING, THE SYSTEM UNDERGOES THE STRONG WESTERLY WINDSHEAR, AND ON THE LAST IMAGES, THE LLCC CENTRE IS EXPOSED IN THE WEST OF THE CONVECTION. THE SYSTEM HAS BEGUN TO ACCELERATE SOUTH-SOUTHEASTWARDS ; IT SHOULD QUICKLY EVACUATE TOWARDS THE EXTRATROPICAL LATITUDES THANKS TO THE TRANSITING THALWEG IN THE SOUTH. THE SYSTEM SHOULD BEGIN ITS EXTRATROPICAL TRANSITION WITHIN THE NEXT 12 TO 24 HOURS.