簽到天數: 971 天 [LV.10]以壇為家III
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jwpk9899|2013-10-8 17:48
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老J發布TCFA
預測往菲律賓中部接近
WTPN21 PGTW 080800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
195 NM EITHER SIDE OF A LINE FROM 13.3N 133.1E TO 14.7N 125.7E
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 18 TO 23 KNOTS. METSAT IMAGERY AT
080532Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 13.7N
132.1E. THE SYSTEM IS MOVING WEST-NORTHWESTWARD AT 12 KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 14.0N
135.0E, IS NOW LOCATED NEAR 13.7N 132.1E, APPROXIMATELY 410 NM NORTH-
NORTHWEST OF PALAU. RECENT ANIMATED MULTISPECTRAL SATELLITE IMAGERY
(MSI) REVEALS DEEP CONVECTION HAS PERSISTED FOR THE PAST SIX HOURS
OVER AN INCREASINGLY ORGANIZED LOW LEVEL CIRCULATION CENTER (LLCC).
A RECENT 080308Z OSCAT PASS INDICATES THE LLCC IS ELONGATED ALONG
THE EAST-WEST AXIS WITH WINDS AROUND 20 KNOTS FOR THE MAJORITY OF
THE CIRCULATION, BUT WITH RAIN-FLAGGED STRONGER WINDS IN THE
SOUTHWESTERN QUADRANT. UPPER LEVEL ANALYSIS INDICATES THE SYSTEM IS
IN AN ENVIRONMENT OF LOW TO MODERATE (10 TO 20 KTS) VERTICAL WIND
SHEAR WITH FAVORABLE DIFFLUENCE ALOFT. DYNAMICAL MODEL GUIDANCE
INDICATES THE SYSTEM WILL CONTINUE TO DEVELOP AND TRACK WESTWARD
TOWARD THE PHILIPPINES. MAXIMUM SUSTAINED SURFACE WINDS ARE
ESTIMATED AT 18 TO 23 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED
TO BE NEAR 1004 MB. 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
090800Z.//
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