簽到天數: 3291 天 [LV.Master]伴壇終老
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t02436|2015-2-5 09:49
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JTWC評級Low
B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION HAS PERSISTED NEAR 4.4N 167.4E,
APPROXIMATELY 260 NM SOUTH OF KWAJALEIN. ANIMATED MULTISPECTRAL
SATELLITE IMAGERY DEPICTS A WEAK, ILL-DEFINED LOW-LEVEL CIRCULATION
CENTER (LLCC) WITH FLARING, DISORGANIZED DEEP CONVECTION. A 042005Z
SSMIS 37 GHZ IMAGE INDICATES BROAD, FRAGMENTED CONVECTIVE BANDING
WITH NO EVIDENCE OF A DEFINED LLCC. RECENT SCATTEROMETER IMAGERY
INCLUDING A 041039Z ASCAT IMAGE AND A 041827Z WINDSAT PARTIAL IMAGE
SHOW AN ELONGATED CIRCULATION WITH STRONG (20 TO 25 KNOTS),
CONVERGENT WESTERLIES. UPPER-LEVEL ANALYSIS INDICATES A MARGINAL
ENVIRONMENT WITH MODERATE VERTICAL WIND SHEAR AND BROAD, DIVERGENT
SOUTHERLY FLOW, WHICH IS FUELING LARGE, SHORT-LIVED BURSTS OF DEEP
CONVECTION. IN GENERAL, THE DYNAMIC MODELS INDICATE SLOW DEVELOPMENT
OVER THE NEXT TWO DAYS, HOWEVER, GFS, NAVGEM AND ECMWF DIFFER
SIGNIFICANTLY ON THE LOCATION AND EVOLUTION OF THIS SYSTEM. MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 12 TO 18 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR
THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS IS LOW.
GFS 18Z
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