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命名Bheki
本帖最后由 pocketbox 于 2024-11-13 23:55 编辑
WTIO30 FMEE 140710
RSMC / TROPICAL CYCLONE CENTER / LA REUNION
TROPICAL CYCLONE FORECAST WARNING (SOUTH-WEST INDIAN OCEAN)
0.A WARNING NUMBER: 8/3/20242025
1.A MODERATE TROPICAL STORM 3 (BHEKI)
2.A POSITION 2024/11/14 AT 0600 UTC:
WITHIN 30 NM RADIUS OF POINT 10.2 S / 75.8 E
(TEN DECIMAL TWO DEGREES SOUTH AND
SEVENTY FIVE DECIMAL EIGHT DEGREES EAST)
MOVEMENT: SOUTH-WEST 4 KT
3.A DVORAK ANALYSIS: 3.0/3.0/D 0.5/6 H
4.A CENTRAL PRESSURE: 999 HPA
5.A MAX AVERAGE WIND SPEED (10 MN): 40 KT
RADIUS OF MAXIMUM WINDS (RMW): 46 KM
6.A EXTENSION OF WIND BY QUADRANTS (KM):
28 KT NE: 185 SE: 220 SW: 220 NW: 185
34 KT NE: 95 SE: 95 SW: 140 NW: 100
7.A FIRST CLOSED ISOBAR (PRESSURE / AVERAGE DIAM): 1009 HPA / 1100 KM
8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: DEEP
1.B FORECASTS (WINDS RADII IN KM):
12H: 2024/11/14 18 UTC: 11.1 S / 75.5 E, VENT MAX= 045 KT, MODERATE
TROPICAL STORM
28 KT NE: 120 SE: 230 SW: 205 NW: 100
34 KT NE: 85 SE: 120 SW: 0 NW: 65
24H: 2024/11/15 06 UTC: 12.3 S / 74.9 E, VENT MAX= 045 KT, MODERATE
TROPICAL STORM
28 KT NE: 140 SE: 260 SW: 230 NW: 120
34 KT NE: 95 SE: 140 SW: 95 NW: 65
36H: 2024/11/15 18 UTC: 13.5 S / 73.8 E, VENT MAX= 050 KT, SEVERE
TROPICAL STORM
28 KT NE: 155 SE: 270 SW: 230 NW: 110
34 KT NE: 100 SE: 140 SW: 140 NW: 65
48 KT NE: 55 SE: 65 SW: 55 NW: 45
48H: 2024/11/16 06 UTC: 14.3 S / 72.3 E, VENT MAX= 060 KT, SEVERE
TROPICAL STORM
28 KT NE: 175 SE: 280 SW: 285 NW: 150
34 KT NE: 110 SE: 150 SW: 150 NW: 95
48 KT NE: 45 SE: 55 SW: 45 NW: 0
60H: 2024/11/16 18 UTC: 15.1 S / 71.0 E, VENT MAX= 065 KT, TROPICAL
CYCLONE
28 KT NE: 185 SE: 260 SW: 250 NW: 140
34 KT NE: 110 SE: 140 SW: 150 NW: 85
48 KT NE: 45 SE: 65 SW: 45 NW: 45
64 KT NE: 30 SE: 45 SW: 35 NW: 35
72H: 2024/11/17 06 UTC: 15.8 S / 69.6 E, VENT MAX= 070 KT, TROPICAL
CYCLONE
28 KT NE: 195 SE: 270 SW: 250 NW: 155
34 KT NE: 120 SE: 150 SW: 155 NW: 95
48 KT NE: 55 SE: 75 SW: 65 NW: 45
64 KT NE: 45 SE: 45 SW: 35 NW: 30
2.B LONGER-RANGE OUTLOOK:
96H: 2024/11/18 06 UTC: 16.6 S / 67.4 E, VENT MAX= 080 KT, TROPICAL
CYCLONE
28 KT NE: 205 SE: 270 SW: 220 NW: 155
34 KT NE: 120 SE: 150 SW: 150 NW: 95
48 KT NE: 55 SE: 75 SW: 65 NW: 45
64 KT NE: 30 SE: 45 SW: 35 NW: 30
120H: 2024/11/19 06 UTC: 17.1 S / 65.6 E, VENT MAX= 065 KT, TROPICAL
CYCLONE
28 KT NE: 185 SE: 280 SW: 230 NW: 140
34 KT NE: 100 SE: 155 SW: 150 NW: 85
48 KT NE: 60 SE: 70 SW: 60 NW: 40
64 KT NE: 40 SE: 40 SW: 40 NW: 30
2.C ADDITIONAL INFORMATION:
T=CI=3.0
OVER THE PAST 6 HOURS, CONVECTION AROUND THE SYSTEM HAS MOVED EVEN
CLOSER TO THE CENTER AND IS BECOMING INCREASINGLY ORGANIZED. THE
SSMIS F17 MICROWAVE PICTURE FROM 0110Z CONFIRMS THIS TREND AND EVEN
SHOWS ALMOST A RING OF CONVECTION AROUND THE CENTER. THE VISIBLE
SATELLITE IMAGE FROM 06UTC SHOWS WELL-ORGANIZED CONVECTION WITH GOOD
ALTITUDE DIVERGENCE. WITH THESE ELEMENTS, THE SUBJECTIVE DVORAK
ANALYSIS BASED ON THE MET ALLOWS US TO ESTIMATE THE INTENSITY OF THE
MAXIMUM WINDS AT 40KT AND THEREFORE TO CLASSIFY THE SYSTEM AS A
MODERATE TROPICAL STORM BEARING THE NAME BEKHI.
IN TERMS OF TRACK, LITTLE CHANGE IN THE FORECAST. WITH THE WEAKENING
OF THE SUB-TROPICAL RIDGE, THE SYSTEM IS MOVING VERY SLOWLY TO THE
SOUTH-SOUTHWEST. THEN, WITH THE STRENGTHENING OF THE RIDGE TO THE
SOUTHEAST, THE SYSTEM SHOULD ACCELERATE WITH A MORE SOUTHWESTERLY
TRACK FROM FRIDAY ONWARDS. AS THE SYSTEM IS STILL POORLY ORGANIZED,
DISPERSION IS FAIRLY STRONG IN THE VERY SHORT TERM, BUT MOST MODELS
SUGGEST THIS ACCELERATION AND SOUTHWESTERLY TRACK FROM FRIDAY
EVENING. AT THE START OF NEXT WEEK, DISPERSION WILL BECOME STRONGER
AGAIN, WITH A WEAKNESS IN THE UPPER RIDGE THAT COULD GIVE THE SYSTEM
A MORE SOUTHERLY TRACK. THE TRACK FORECASTED BY RSMC IS A COMPROMISE
BETWEEN THE GFS TRACK (A LITTLE FURTHER SOUTH) AND THE IFS TRACK (A
LITTLE FASTER).
IN TERMS OF INTENSITY, THE EASTERLY TO NORTHEASTERLY SHEAR, THAT
CURRENTLY LIMITS THE SYSTEM'S ORGANIZATION, SHOULD GRADUALLY WEAKEN
OVER THE NEXT FEW HOURS AS THE SYSTEM MOVES SOUTH-SOUTHWEST, ALLOWING
IT TO INTENSIFY. WITH GOOD ENVIRONMENTAL CONDITIONS (HIGH OCEAN
POTENTIAL, GOOD LOW-LEVEL CONVERGENCE, GOOD UPPER-LEVEL DIVERGENCE
AND LITTLE SHEAR), THE SYSTEM SHOULD CONTINUE TO INTENSIFY. FROM
FRIDAY ONWARDS, UNCERTAINTY INCREASES SHARPLY. DESPITE A TEMPORARY
SHEAR STRESS, WHICH COULD TEMPORARILY CAP INTENSITY AND BRING DRIER
AIR TO THE SYSTEM'S PERIPHERY. THE ACCELERATION OF MOTION IN THE
DIRECTION OF THE SHEAR COULD, ON THE CONTRARY, MAINTAIN A CONTEXT
FAVORABLE TO ITS INTENSIFICATION. THE PRESENT FORECAST SUGGESTS A
SLOW INTENSIFICATION ON FRIDAY TO THE SEVERE TROPICAL STORM STAGE IN
THE EVENING, FOLLOWED BY A MORE RAPID INTENSIFICATION TO THE TROPICAL
CYCLONE STAGE ON SATURDAY EVENING OR SUNDAY MORNING. AFTER PEAKING
EARLY NEXT WEEK, IT WILL BEGIN TO WEAKEN.
IT'S STILL TOO EARLY TO FORECAST POSSIBLE IMPACTS ON INHABITED LAND,
BUT RODRIGUES RESIDENTS ARE INVITED TO FOLLOW THE SYSTEM'S EVOLUTION.= |
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