(1) AN AREA OF CONVECTION (INVEST 97W) HAS PERSISTED NEAR 17.4N
128.1E, APPROXIMATELY 478 NM SOUTH-SOUTHEAST OF ISHIGAKI-JIMA.
ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS A WAVE EMBEDDED
IN THE EASTERLIES, WITH WEAK LOW-LEVEL CYCLONIC TURNING EVIDENT AND
FLARING DEEP CONVECTION OVER THE EASTERN PERIPHERY. A 280042Z MHS 89
GHZ MICROWAVE IMAGE DEPICTS CURVED SHALLOW BANDING OVER THE NORTHERN
SEMICIRCLE WITH A LINE OF FRAGMENTED DEEP CONVECTION ALONG THE EASTERN
FLANK ASSOCIATED WITH LOW-LEVEL CONVERGENT FLOW. A 280140Z ASCAT-C
IMAGE REVEALS A SHARP WAVE FEATURE WITH 5-15 KNOT CORE WINDS AND A
SWATH OF 15-20 KNOT EASTERLIES DISPLACED ABOUT 60-70 NM TO THE NORTH.
THERE IS CURRENTLY NO EVIDENCE OF A CLOSED CIRCULATION IN ASCAT
IMAGERY AND MSI. UPPER-LEVEL ANALYSIS INDICATES A MARGINAL ENVIRONMENT
WITH BROAD DIFFLUENT FLOW AND LOW TO MODERATE (15 TO 20 KNOTS)
VERTICAL WIND SHEAR. GLOBAL MODELS INDICATE WEAK DEVELOPMENT DUE TO
PERSISTENT STRONG EAST-SOUTHEASTERLY TO SOUTHEASTERLY UPPER-LEVEL FLOW
AS THE DISTURBANCE TRACKS NORTHWESTWARD. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 12 TO 17 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.
(1) THE AREA OF CONVECTION (INVEST 97W) PREVIOUSLY LOCATED NEAR
17.4N 128.1E HAS DISSIPATED AND IS NO LONGER SUSPECT FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE IN THE NEXT 24 HOURS.
提升卡
千斤頂
