簽到天數: 3291 天 [LV.Master]伴壇終老
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t02436|2022-8-10 07:40
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(2) THE AREA OF CONVECTION (INVEST 90W) PREVIOUSLY LOCATED NEAR
23.2N 145.0E IS NOW LOCATED NEAR 24.8N 142.3E, APPROXIMATELY 660NM
SOUTH-SOUTHEAST OF TOKYO, JAPAN. ANIMATED ENHANCED INFRARED SATELLITE
IMAGERY DEPICTS A CONSOLIDATING LOW-LEVEL CIRCULATION (LLC) WITH
A REGION OF SYMMETRIC DEEP CONVECTION OVER THE LLC. A 090837Z
SSMIS 91GHZ MICROWAVE IMAGE REVEALS A COMPACT SYSTEM WITH FORMATIVE
BANDING BUT WEAK OVERALL STRUCTURE. A RECENT SCATTEROMETER IMAGE
SHOWS A DEFINED CIRCULATION WITH 20-25 KNOT WINDS OVER THE NORTHERN
SEMICIRCLE AND 5-10 KNOT WINDS OVER THE SOUTHERN SEMICIRCLE.
UPPER-LEVEL ANALYSIS INDICATES THE SYSTEM IS EMBEDDED WITHIN BROAD
EASTERLY FLOW, HOWEVER, ANIMATED WATER VAPOR IMAGERY SHOWS
THE SYSTEM IS FIGHTING THE ENVIRONMENT WITH NEAR-RADIAL OUTFLOW.
VERTICAL WIND SHEAR RANGES FROM LOW TO MODERATE (15 TO 20 KNOTS).
GLOBAL MODELS INDICATE A WEST-NORTHWESTWARD TO NORTHWESTWARD
TRACK OVER THE NEXT 1-2 DAYS WITH MIXED DEVELOPMENT. ECMWF AND
NAVGEM SUGGEST SOME POTENTIAL FOR DEVELOPMENT OF A WEAK TROPICAL
DEPRESSION WITH 25-35 KNOT WINDS OVER THE EASTERN SEMICIRCLE WHILE
GFS SHOWING A WEAKER SYSTEM WITH 20-25 KNOT WINDS OVER THE EASTERN
PERIPHERY. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB.
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM. |
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