簽到天數: 868 天 [LV.10]以壇為家III
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jrchang5|2019-9-26 08:50
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JTWC 25/22Z提升評級至Medium。
(1) AN AREA OF CONVECTION (INVEST 91W), PREVIOUSLY LOCATED NEAR
12.0N 153.0E, IS NOW LOCATED NEAR 10.5N 149.7E, APPROXIMATELY 341 NM
EAST-SOUTHEAST OF GUAM. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY
SHOWS A WEAKLY-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC). A 250617Z
SSMIS 91GHZ MICROWAVE PARTIAL IMAGE DEPICTS FLARING CONVECTION OVER
THE LLCC. INVEST 91W IS CURRENTLY IN A VERY FAVORABLE ENVIRONMENT WITH
EXCELLENT POLEWARD OUTFLOW, MARGINAL (10 TO 20 KNOT) VERTICAL WIND
SHEAR, AND VERY WARM (31 TO 32 CELSIUS) SEA SURFACE TEMPERATURES. GLOBAL
MODELS ARE IN VERY GOOD AGREEMENT THAT INVEST 91W WILL TRACK WEST-
NORTHWESTWARD AND INTENSIFY, REACHING WARNING CRITERIA WITHIN THE NEXT
48 TO 72 HOURS. 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 MEDIUM.
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