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JTWC0130Z評級Low
(1) AN AREA OF CONVECTION (INVEST 99W) HAS PERSISTED NEAR 6.6N
146.9E, APPROXIMATELY 425 NM SOUTH-SOUTHEAST OF GUAM. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY REVEALS DEEP CONVECTION TO THE NORTH
OF A DEFINED LOW LEVEL CIRCULATION CENTER (LLCC). A 261847Z 91 GHZ
COLOR COMPOSITE MICROWAVE IMAGE DEPICTS FORMATIVE CONVECTIVE BANDING
OVER THE NORTHERN SEMICIRCLE OF THE LLCC. INVEST 99W IS LOCATED
WITHIN A FAVORABLE ENVIRONMENT CHARACTERIZED BY LOW (5-10KTS)
VERTICAL WIND SHEAR, WARM (29-30 DEGREES CELSIUS) SEA SURFACE
TEMPERATURES, AND DIVERGENCE ALOFT. MODEL GUIDANCE INDICATES THAT
THIS SYSTEM WILL STEADILY CONSOLIDATE AS IT TRACKS WESTWARD.
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS.
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1008 MB. THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS LOW. 
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