簽到天數: 3291 天 [LV.Master]伴壇終老
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t02436|2014-3-21 06:39
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升Medium後6小時TCFA
WTPN21 PGTW 202200
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
155 NM EITHER SIDE OF A LINE FROM 7.2N 130.8E TO 8.7N 125.5E
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 202030Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 7.7N 129.3E. THE SYSTEM IS MOVING NORTH-NORTHEASTWARD AT 04
KNOTS.
2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 7.4N
129.3E IS NOW LOCATED NEAR 7.7N 129.3E, APPROXIMATELY 437 NM EAST OF
ZAMBOANGA, PHILIPPINES. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY
DEPICTS IMPROVED DEEP CONVECTIVE BANDING ASSOCIATED WITH A SLOWLY-
CONSOLIDATING LOW-LEVEL CIRCULATION CENTER (LLCC). A 201841Z SSMI
MICROWAVE IMAGE REVEALS FORMATIVE BANDING OVER THE NORTHERN
PERIPHERY WRAPPING INTO THE DEFINED LLCC. AN OLDER 191304Z ASCAT
PASS SHOWED A SYMMETRIC CIRCULATION WITH 15 TO 20 KNOT WINDS,
PRIMARILY LOCATED OVER THE NORTHERN SEMI-CIRCLE. UPPER-LEVEL
ANALYSIS INDICATES THE DISTURBANCE IS LOCATED IN A FAVORABLE
ENVIRONMENT WITH LOW TO MODERATE VERTICAL WIND SHEAR OFFSET BY
STRONG POLEWARD OUTFLOW. ADDITIONALLY, SEA SURFACE TEMPERATURES IN
THE AREA ARE CONDUCIVE FOR DEVELOPMENT. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1004 MB. DUE TO IMPROVING ORGANIZATION AND
FAVORABLE CONDITIONS, 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
212200Z.
//
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