簽到天數: 3291 天 [LV.Master]伴壇終老
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t02436|2015-5-2 16:40
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本帖最後由 t02436 於 2015-5-2 16:47 編輯
JTWC發布TCFA
WTPN21 PGTW 020830
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
100 NM EITHER SIDE OF A LINE FROM 7.4N 144.2E TO 8.4N 140.6E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 15 TO 20 KNOTS. METSAT
IMAGERY AT 020600Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 7.4N 144.0E. THE SYSTEM IS MOVING WESTWARD AT 10 KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 6.7N
145.5E, IS NOW LOCATED NEAR 7.4N 144.1E, APPROXIMATELY 360 NM SOUTH
OF GUAM. RECENT ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS DEEP
CONVECTION DEVELOPING ALONG THE WESTERN PERIPHERY OF A LOW LEVEL
CIRCULATION CENTER (LLCC) ALSO EVIDENT IN RECENT MICROWAVE SATELLITE
IMAGERY INCLUDING A 020414Z AMSU PASS. THIS DISTURBANCE LIES
EQUATORWARD OF AN UPPER-LEVEL RIDGE AXIS, IN AN AREA OF LOW TO
MODERATE EASTERLY VERTICAL WIND SHEAR, INCREASING OUTFLOW ALOFT,
AND FAVORABLE SEA SURFACE TEMPERATURES. DYNAMIC MODEL GUIDANCE
INDICATES TROPICAL CYCLONE FORMATION WITHIN THE NEXT DAY OR TWO.
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS.
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB. BASED
ON LOW-LEVEL CONSOLIDATION, IMPROVING CONVECTIVE SIGNATURE, AND
FAVORABLE ENVIRONMENTAL SUPPORT, 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
030830Z.//
NNNN
JMA升格TD
TROPICAL DEPRESSION 1006 HPA AT 07N 145E WEST 10 KT.
00Z
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