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本帖最後由 ... 於 2014-8-3 06:33 編輯
給出TCFA. 報圖稍後補上NHC給HIGH 80%
WTPN23 PHNC 022000MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//SUBJ/TROPICAL CYCLONE FORMATION ALERT//RMKS/1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN150 NM EITHER SIDE OF A LINE FROM 13.1N 112.6W TO 12.5N 119.6WWITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFYISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.WINDS IN THE AREA ARE ESTIMATED TO BE 20 TO 25 KNOTS. METSATIMAGERY AT 021830Z INDICATES THAT A CIRCULATION CENTER IS LOCATEDNEAR 13.3N 113.4W. THE SYSTEM IS MOVING WEST-NORTHWESTWARD AT 09KNOTS.2. REMARKS: AN AREA OF CONVECTION HAS DEVELOPED NEAR 13.3N 113.4W, APPROXIMATELY 315 NM SOUTH-SOUTHEAST OF CLARION ISLAND. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A PARTIALLY EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH IMPROVED DEEP CENTRAL CONVECTION SHEARED TO THE NORTHWEST. A 021717Z METOP-B MICROWAVE IMAGE ALSO REVEALS THE BULK OF THE CONVECTION OVER THE NORTHWESTERN QUADRANT WITH FORMATIVE BANDING WRAPPING TOWARDS THE CENTER. UPPER-LEVEL ANALYSIS INDICATES THE DISTURBANCE IS LOCATED IN A FAVORABLE ENVIRONMENT WITH LOW TO MODERATE VERTICAL WIND SHEAR OFFSET BY GOOD OUTFLOW. ADDITIONALLY, SEA SURFACE TEMPERATURES ARE CONDUCIVE FOR DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. DUE TO IMPROVED CONVECTION AND ORGANIZATION, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS HIGH.3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 032000Z.//NNNN
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