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
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WTIO20 FMEE 111200 SECURITE STORM WARNING FOR METAREA VIII (S) ISSUED BY METEO-FRANCE/TROPICAL CYCLONE CENTRE/LA REUNION 11/01/2009 AT 1200 UTC. WARNING NUMBER: 014/05 (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). STORM WARNING BEGINNING OF VALIDITY: SUNDAY 11/01/2009 AT 1200 UTC. PHENOMENON: SEVERE TROPICAL STORM 5 (DONGO) 985 HPA POSITION: WITHIN 20 NM RADIUS OF POINT 22.8S / 69.7E (TWENTY TWO DECIMAL EIGHT DEGREES SOUTH AND SIXTY NINE DECIMAL SEVEN DEGREES EAST) AT 1200 UTC MOVEMENT: SOUTH-EAST 13 KT THREAT AREAS: SQUALLY WEATHER EXISTS WITHIN 180 NM RADIUS FROM THE CENTER, EXTENDING UP TO300 NM IN THE NORTHEASTERN QUADRANT AND UP TO 600 NM IN THE SOUTHERN SEMI-CIRCLE. STORM WINDS 50 KT AND VERY HIGH SEA WITHIN 20 NM RADIUS FROM THE CENTER. GALE FORCE WINDS 35/45 KT AND HIGH SEA WITHIN 40 NM RADIUS FROM THE CENTER EXTENDING UP TO 100 NM IN THE EASTERN SEMI-CIRCLE. NEAR GALE FORCE WINDS 30 KT AND ROUGH TO VERY ROUGH SEA WITHIN 90 NM RADIUS FROM THE CENTER EXTENDING UP TO 160 NM IN THE EASTERN SEMI-CIRCLE . STRONG GUSTS UNDER SQUALLS. FORECAST POSITION AND INTENSITY: 12H, VALID 2009/01/12 AT 00 UTC: 25.6S / 70.1E, MAX WIND = 40 KT, MODERATE TROP. STORM. 24H, VALID 2009/01/12 AT 12 UTC: 28.0S / 70.7E, MAX WIND = 40 KT, BECOMING EXTRATROPICAL. OTHER INFORMATIONS: STRONGER WINDS EXTEND FAR FROM THE CENTER IN THE EASTERN SEMI-CIRCLE DUE TO THE GRADIENT EFFECT WITH THE SUBTROPICAL HIGH PRESSURES, AND THE OWN SYSTEM SPEED. WINDS EXTENSION HAS BEEN MEASURED THANKS TO RECENT SATELLITE DATA. ENVIRONMENTAL CONDITIONS ARE LESS FAVOURABLE, AND THE SYSTEM SHOWS SIGNS OF WEAKENING.