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发表于 2010-12-1 19:39
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ZCZC 543
WTIO30 FMEE 010655
RSMC / TROPICAL CYCLONE CENTRE / LA REUNION
TROPICAL CYCLONE TECHNICAL BULLETIN (SOUTH-WEST INDIAN OCEAN)
0.A WARNING NUMBER : 8/2/20102011
1.A TROPICAL DEPRESSION 2 (02 20102011)
2.A POSITION 2010/12/01 AT 0600 UTC :
WITHIN 30 NM RADIUS OF POINT 14.8S / 85.4E
(FOURTEEN DECIMAL EIGHT DEGREES SOUTH AND EIGHTY FIVE DECIMAL FOUR
DEGREES EAST)
MOVEMENT : SOUTH-SOUTH-EAST 5 KT
3.A DVORAK ANALYSIS : 2.5/2.5 /D 0.5/12 H
4.A CENTRAL PRESSURE : 997 HPA
5.A MAX AVERAGE WIND SPEED (10 MN) : 30 KT
RADIUS OF MAXIMUM WINDS (RMW) : 80 KM
6.A EXTENSION OF WINDS BY QUADRANTS (KM):
28 KT NE: 220 SE: 220 SO: 220 NO: 140
7.A FIRST CLOSED ISOBARE (PRESSURE / AVERAGE DIAM): 1004 HPA / 660 KM
8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: MEDIUM
1.B FORECASTS:
12H: 2010/12/01 18 UTC: 15.6S/85.9E, MAX WIND=035KT, MODERATE TROP.
STORM
.
24H: 2010/12/02 06 UTC: 16.5S/86.9E, MAX WIND=040KT, MODERATE TROP.
STORM
.
36H: 2010/12/02 18 UTC: 17.1S/88.3E, MAX WIND=040KT, MODERATE TROP.
STORM
.
48H: 2010/12/03 06 UTC: 18.2S/89.9E, MAX WIND=030KT, TROP.
DEPRESSION.
60H: 2010/12/03 18 UTC: 19.4S/91.4E, MAX WIND=030KT, TROP.
DEPRESSION.
72H: 2010/12/04 06 UTC: 19.8S/92.5E, MAX WIND=030KT, TROP.
DEPRESSION.
2.B OTHER INFORMATIONS:
T AND CI=2.5
DUE TO ITS SOUTHWARDS MOTION, SYSTEM IS PENETRATING WITHIN A WEAK
SHEARED
ENVIRONMENT UNDER THE UPPER LEVEL RIDGE.
LOW LEVEL INFLOW REMAINS GOOD, THANKS TO THE EQUATORWARD WESTERLIES
AND
THE GOOD TRADE WINDS IN THE SOUTH.
INFRARED PATTERN HAS THEREFORE IMPROVED DURING THE SECOND HALF OF THE
NIGHT AND SYSTEM SHOWS NOW A CURVED BAND PATTERN WRAPPING AROUND 4 TO
6
TENS.
SYSTEM IS EXPECTED TO TRACK EAST-SOUTHEASTWARDS UNDERGOING THE
STEERING
FLOW OF THE LOW TO MID LEVELS HIGHS IN ITS NORTH.
IN THIS FORECAST TRACK, THE SYSTEM SHOULD KEEP ON INTENSIFYING WITHIN
THE
NEXT 24 HOURS AND SHOULD REACH THE MODERATE STORM STAGE.
BEYOND, IT IS EXPECTED WEAKENING , UNDERGOING A STRENGTHENING
NORTH-WESTERLY WINDSHEAR IN ITS SOUTH AND MARGINAL OCEANIC HEAT
CONTENT
ON COOLER AND COOLER SST.=
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