簽到天數: 3291 天 [LV.Master]伴壇終老
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t02436|2018-8-27 12:16
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20Z提升評級至Medium
B. TROPICAL DISTURBANCE SUMMARY:
(1) THE AREA OF CONVECTION (INVEST 94W) PREVIOUSLY LOCATED
NEAR 11.4N 161.6E, IS NOW LOCATED NEAR 12.0N 160.1E, APPROXIMATELY
900 NM EAST OF GUAM. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY
DEPICTS A CONSOLIDATING LOW LEVEL CIRCULATION CENTER (LLCC) WITH
PERSISTENT DEEP CONVECTION. A 261848Z 91GHZ SSMIS IMAGE DEPICTS
IMPROVED DEEP CONVECTIVE BANDING OVER THE SOUTHERN SEMICIRCLE. A
261102Z ASCAT IMAGE INDICATES AN ELONGATED BUT DEFINED CIRCULATION
WITH 15-20 KTS AROUND THE LLCC. THE UPPER LEVEL ENVIRONMENT IS
FAVORABLE FOR DEVELOPMENT WITH LOW VERTICAL WIND SHEAR (5-10KTS),
GOOD UPPER LEVEL DIVERGENCE, AND WARM SEA SURFACE TEMPERATURES (28-
29C). GLOBAL MODELS ARE IN AGREEMENT THAT THE SYSTEM WILL TRACK TO
THE WEST TO NORTHWEST AND GRADUALLY DEVELOP INTO A TROPICAL CYCLONE,
BUT VARY ON THE TIMING OF DEVELOPMENT. 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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