簽到天數: 3280 天 [LV.Master]伴壇終老
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t02436|2014-4-1 14:14
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評級Low
AN AREA OF CONVECTION HAS PERSISTED NEAR 24.6S 167.4W,
APPROXIMATELY 752 NM SOUTH-SOUTHEAST OF PAGO PAGO, AMERICAN SAMOA.
ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A WELL-DEFINED AND
PARTIALLY-EXPOSED LLCC WITH SCATTERED CONVECTION DISPLACED TO THE
SOUTHEAST. RECENT ANIMATED TOTAL PRECIPITABLE WATER IMAGERY SHOWS A
CONSOLIDATED SYSTEM WITH COOL DRY AIR WRAPPING INTO THE SYSTEM FROM
THE NORTH. A 312102Z PARTIAL ASCAT PASS REVEALS 45 TO 50 KNOT WINDS
IN THE WESTERN PERIPHERIES. UPPER-LEVEL ANALYSIS INDICATES THE
SYSTEM IS SOUTH OF THE SUBTROPICAL JET AND NORTH OF POLAR JET WITH
AN UPPER-LEVEL LOW OVER THE LLCC IN A STRONG (30+ KNOTS) VERTICAL
WIND SHEAR ENVIRONMENT. BASED ON THIS DATA, THIS SYSTEM IS
CLASSIFIED AS SUBTROPICAL. MAXIMUM SUSTAINED SURFACE WINDS ARE
ESTIMATED AT 45 TO 50 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED
TO BE NEAR 988 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
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