|
改為熱帶擾動,法國上看風速 110 節,或許還有機會成為特強熱帶氣旋。此外 ECMWF 最新預測 17 日達到 911 百帕。
- WTIO30 FMEE 101911 CCA
- ***************CORRECTIVE (MOVEMENT) **************
- RSMC / TROPICAL CYCLONE CENTER / LA REUNION
- TROPICAL CYCLONE FORECAST WARNING (SOUTH-WEST INDIAN OCEAN)
- 0.A WARNING NUMBER: 4/5/20142015
- 1.A TROPICAL DISTURBANCE 5
- 2.A POSITION 2015/01/10 AT 1800 UTC:
- WITHIN 30 NM RADIUS OF POINT 16.4 S / 53.4 E
- (SIXTEEN DECIMAL FOUR DEGREES SOUTH AND FIFTY THREE DECIMAL FOUR DEGREES EAST)
- MOVEMENT : NORTH-EAST 5 KT
- 3.A DVORAK ANALYSIS: 2.0/2.0/S 0.0/12 H
- 4.A CENTRAL PRESSURE: 1002 HPA
- 5.A MAX AVERAGE WIND SPEED (10 MN): 25 KT
- RADIUS OF MAXIMUM WINDS (RMW) :NIL
- 6.A EXTENSION OF WIND BY QUADRANTS (KM):
- 7.A FIRST CLOSED ISOBAR (PRESSURE / AVERAGE DIAM): 1006 HPA / 400 KM
- 8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION : MEDIUM
- 1.B FORECASTS:
- 12H: 2015/01/11 06 UTC: 16.7 S / 54.0 E, MAX WIND=030 KT, TROPICAL DEPRESSION
- 24H: 2015/01/11 18 UTC: 17.4 S / 54.5 E, MAX WIND=040 KT, MODERATE TROPICAL STORM
- 36H: 2015/01/12 06 UTC: 18.0 S / 55.3 E, MAX WIND=050 KT, SEVERE TROPICAL STORM
- 48H: 2015/01/12 18 UTC: 18.1 S / 55.9 E, MAX WIND=060 KT, SEVERE TROPICAL STORM
- 60H: 2015/01/13 06 UTC: 18.1 S / 56.3 E, MAX WIND=070 KT, TROPICAL CYCLONE
- 72H: 2015/01/13 18 UTC: 18.0 S / 56.8 E, MAX WIND=080 KT, TROPICAL CYCLONE
- 2.B LONGER-RANGE OUTLOOK :
- 96H: 2015/01/14 18 UTC: 18.2 S / 58.0 E, MAX WIND=100 KT, INTENSE TROPICAL CYCLONE
- 120H: 2015/01/15 18 UTC: 18.9 S / 59.8 E, MAX WIND=110 KT, INTENSE TROPICAL CYCLONE
- 2.C ADDITIONAL INFORMATIONS:
- T=CI=2.0+
- WITHIN THE LAST SIX HOURS, THE DEEP CONVECTION HAS STRENGTHEN AND THE WV SATELLITE ANIMATED PICTUR
- ES INDICATE THAT THE UPPER LEVEL DIVERGENCE IS BUILDING SOUTH-EAST OF THE CONVECTIVE MASS.
- THE CURRENT FIX AND INTENSITY ARE BASED ON THE ASCAT DATA AT 1737Z .
- THE LOW LEVEL CENTER IS STILL LOCATED SOUTH-WEST OF THE DEEP CONVECTION.
- TONIGHT, OWING TO AN UPPER LEVEL TROUGH ALOFT, ENVIRONMENTAL CONDITIONS DOES NOT APPEAR FAVOURABLE
- FOR SIGNIFICATIVE INTENSIFICATION DESPITE A GOOD LOW LEVEL CONVERGENCE ON THE BOTH SIDES.
- UNDER THE STEERING INFLUENCE OF TWO COMPETING FLOWS GENERATED BY 2 LOW/MID LEVELS RIDGES (ON THE N
- ORTH-WEST AN THE SOUTH), THE LOW IS EXPECTED TO KEEP ON DRIFTING SLOWLY, GENERALLY NORTH-EASTWARDS
- .
- ON SUNDAY, THE ENVIRONMENTAL CONDITIONS ARE IMPROVING UNDER THE UPPER LEVEL RIDGE AXIS AND A GOOD
- UPPER LEVEL DIVERGENCE BUILTS PROGRESSIVELY, MAINLY POLEWARD.SYSTEM IS THEREFORE EXPECTED TO DEEPE
- N MORE CLEARLY. EXPERIENCING BY THAT TIME MID LEVELS STEERING FLOW GENERATED BY A RIDGE IN ITS NOR
- TH-EAST, SYSTEM SHOULD BEGIN A SOUTH-SOUTH-EASTWARDS MOTION.
- FROM MONDAY TO THURSDAY, ENVIRONMENTAL CONDITIONS SHOULD KEEP ON BEING FAVOURABLE.
- THE MID LEVEL RIDGE WILL SHIFT IN THE NORTH, AND THEN IN THE NORTH-WEST OF THE SYSTEM, AND ANOTHER
- MID LEVEL RIDGE WILL BUILT IN ITS SOUTH. THE SYSTEM IS THEREFORE EXPECTED TO BE BETWEEN TO COMPET
- ING STEERING FLOWS AND TO SLOW DOWN ON A EAST-SOUTH-EASTWARDS TO SOUTH-EASTWARDS PATH, BY INTENSI
- FYING REGULARLY.
- THE CURRENT FORECASTED TRACK IS BASED ON THE LAST ECMWF OUTCOME (12Z). HOWEVER, THE UNCERTAINTY OF
- THE FINAL TRACK AND SPEED IS HIGH FOR THIS SYSTEM.THE TREND IS AN INTENSIFICATION AND A GLOBALLY
- EAST-SOUTH-EASTWARDS MOTION FROM SUNDAY TO THURSDAY.
- SYSTEM REPRESENTS THEREFORE A POTENTIAL THREAT FOR THE MASCAREIGNES ISLANDS.
複製代碼 |
本帖子中包含更多資源
您需要 登錄 才可以下載或查看,沒有賬號?立即加入
x
|