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05P.Yasa 南太史上次強氣旋 登陸斐濟

簽到天數: 1650 天

[LV.Master]伴壇終老

老農民版夜神月|2020-12-10 14:26 | 顯示全部樓層
JTWC在0600Z的新報報文中終於首次提及91P,並正式評級其為Low
(2) THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED
NEAR 14.6S 169.2E IS NOW LOCATED NEAR 11.9S 169.7E, APPROXIMATELY
354 NM NORTH OF PORT VILA, VANUATU. ANIMATED ENHANCED INFRARED
SATELLITE IMAGERY AND A 100245Z AMSR2 89GHZ MICROWAVE IMAGE DEPICT A
BROAD, FULLY EXPOSED LOW LEVEL CIRCULATION (LLC) WITH LITTLE TO NO
DEEP CONVECTION. INVEST 91P IS CURRENTLY IN AN MARGINALLY FAVORABLE
ENVIRONMENT WITH HIGH (25-30KTS) VERTICAL WIND SHEAR OFFSET BY GOOD
POLEWARD OUTFLOW AND WARM (29-30C) SEA SURFACE TEMPERATURES. GLOBAL
MODELS ARE IN GOOD AGREEMENT THAT INVEST 91P WILL TRACK GENERALLY
EAST-SOUTHEAST WITH LITTLE INTENSIFICATION BEFORE IT BEGINS
FUJIWHARA INTERACTION WITH INVEST 90P TO ITS WEST, EVENTUALLY BEING
ABSORBED; HOWEVER, GFS IS RESOLVING INVEST 91P AS THE DOMINANT
CIRCULATION, INTENSIFYING IT OVER THE NEXT SEVERAL DAYS. MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1002 MB. THE POTENTIAL FOR
THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS REMAINS LOW.

abpwsair (26).jpg 20201210.0550.himawari-8.ir.91P.INVEST.20kts.1002mb.11.9S.170.7E.100pc.jpg
20201210.0035.gpm.89pct89h89v.91P.INVEST.15kts.1010mb.14.2S.170.2E.025pc.jpg
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[LV.Master]伴壇終老

老農民版夜神月|2020-12-10 11:03 | 顯示全部樓層
JTWC雖仍然沒有發布評級的報文,但已在0130Z的圖上將90P與91P均標上Low
看來凌晨圖中的90P消失直接換成91P確實有點問題

abpwsair (25).jpg 20201210.0220.himawari-8.ir.91P.INVEST.15kts.1010mb.14.6S.169.2E.100pc.jpg
aus (1).png

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[LV.Master]伴壇終老

老農民版夜神月|2020-12-10 03:16 | 顯示全部樓層
JTWC於評級圖中將91S標示為Low,目前無法得知是否為誤植
abpwsair.jpg 91P_gefs_latest.png
20201209.1840.himawari-8.ir.91P.INVEST.15kts.1010mb.14.2S.170.2E.100pc.jpg 20201209.1719.f18.91pct91h91v.91P.INVEST.15kts.1010mb.14.2S.170.2E.085pc.jpg
goes17_ir_91P_202012091635.gif
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