26W 快速北上轉化溫氣

t02436 · 2015-10-20 13:34

JTWC評級Low

(2) AN AREA OF CONVECTION HAS PERSISTED NEAR 17.6N 163.1E,
APPROXIMATELY 220 NM WEST-SOUTHWEST OF WAKE ISLAND. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY DEPICTS A FULLY EXPOSED LLCC WITH
ISOLATED DEEP CONVECTION FLARING OVER THE SOUTHWEST QUADRANT. A
192256Z METOP-B 89GHZ IMAGE INDICATES BROAD, SHALLOW BANDING
WRAPPING INTO AN ELONGATED LLCC WITH WEAK BANDING OVER THE SOUTHWEST
QUADRANT. A 191931Z WINDSAT IMAGE INDICATES A DEFINED CIRCULATION
WITH 15-20 KNOT WINDS OVER THE NORTHERN SEMI-CIRCLE AND WEAKER WINDS
ELSEWHERE. THE UPPER LEVEL ENVIRONMENT REMAINS MARGINAL WITH
MODERATE VERTICAL WIND SHEAR AND BROAD DIFFLUENCE. MAXIMUM SUSTAINED
SURFACE WINDS ARE ESTIMATED AT 12 TO 18 KNOTS. MINIMUM SEA LEVEL
PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS IS LOW.