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asus5635|2016-9-9 14:21
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JTWC 06Z評級MEDIUM B. TROPICAL DISTURBANCE SUMMARY:
(1) THE AREA OF CONVECTION (INVEST 90W) PREVIOUSLY LOCATED
NEAR 11.5N 162.6E, IS NOW LOCATED NEAR 11.1N 161.7E, APPROXIMATELY
85 NM NORTH-NORTHEAST OF UJELANG, MARSHALL ISLANDS. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY DEPICTS A BROAD LOW-LEVEL
CIRCULATION CENTER (LLCC) WITH FLARING DEEP CONVECTION OVER THE
CENTER. A 082233Z AMSU 89GHZ MICROWAVE IMAGE DEPICTS FRAGMENTED
BANDING WRAPPING INTO A BROAD BUT DEFINED LLCC. THE DISTURBANCE
IS LOCATED IN A MARGINAL ENVIRONMENT WITH LOW TO MODERATE (10-20
KNOT) NORTHERLY VERTICAL WIND SHEAR AND WEAK EQUATORWARD OUTFLOW.
GLOBAL MODEL GUIDANCE IS MIXED WITH SOME MODELS SHOWING SOME
DEVELOPMENT OVER THEN NEXT 72 HOURS AS THE DISTURBANCE TRACKS
WESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB.
DUE TO THE DEFINED LLCC WITH AN EXPECTED IMPROVEMENT IN
ENVIRONMENTAL CONDITIONS, THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO
MEDIUM.
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