簽到天數: 971 天 [LV.10]以壇為家III
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jwpk9899|2016-9-21 09:08
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評級MEDIUM
(1) AN AREA OF CONVECTION HAS PERSISTED NEAR 9.6N 151.9E, APPROXIMATELY 540 NM EAST-SOUTHEAST OF GUAM. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS IMPROVED LOW LEVEL CIRCULATION WITH LIMITED ORGANIZATION IN CONVECTIVE ACTIVITY. A 201641Z SSMI IMAGE REVEALS BROAD CONVECTION WITH INCREASED DEVELOPMENT TO THE EAST-NORTHEAST. UPPER LEVEL ANALYSIS REVEALS A MODERATE ENVIRONMENT WITH NOTABLE DIVERGENCE ALOFT AND POLEWARD OUTFLOW SUPPORTED BY A TUTT CELL SITUATED NORTHEAST OF THE AREA. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1009 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM.
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