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JTWC06Z評級提升至Medium。
THE AREA OF CONVECTION (INVEST 97W) PREVIOUSLY LOCATED
NEAR 13.1N 121.1E IS NOW LOCATED NEAR 13.7N 118.8E, APPROXIMATELY
137 NM WEST-SOUTHWEST OF MANILA, PHILIPPINES. ANIMATED MULTISPECTRAL
SATELLITE IMAGERY (MSI) AND A 040202Z METOP-B IMAGE DEPICT 15 TO 20
KNOT WINDS AND FLARING CONVECTION IN THE WESTERN PERIPHERY OF AN
ELONGATED LOW LEVEL CIRCULATION (LLC). ENVIRONMENTAL ANALYSIS SHOWS
FAVORABLE CONDITIONS FOR DEVELOPMENT, WITH GOOD EQUATORWARD OUTFLOW,
LOW (10-15KTS) VERTICAL WIND SHEAR (VWS), AND VERY WARM (30-31C) SEA
SURFACE TEMPERATURES (SST). NUMERICAL MODELS ARE IN GENERAL
AGREEMENT THAT 97W WILL TRACK NORTHWESTWARD BUT ARE SPLIT REGARDING
INTENSIFICATION, WITH ECMWF DETERMINISTIC MODEL, THE ECMWF ENSEMBLE,
AND NAVGEM SHOWING DEVELOPMENT IN THE NEXT TWO TO THREE DAYS WHILE
THE GFS AND JGSM ARE BELOW WARNING CRITERIA. MAXIMUM SUSTAINED
SURFACE WINDS ARE ESTIMATED AT 12 TO 18 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 UPGRADED TO MEDIUM.
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