簽到天數: 1650 天 [LV.Master]伴壇終老
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老農民版夜神月|2021-8-4 07:07
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JTWC發布TCFA
WTPN21 PGTW 032230
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT (INVEST 97W)//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
095 NM EITHER SIDE OF A LINE FROM 23.7N 125.6E TO 26.5N 126.6E
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 20 TO 25 KNOTS. METSAT
IMAGERY AT 031800Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 24.2N 125.8E. THE SYSTEM IS MOVING EASTWARD AT 06 KNOTS.
2. REMARKS: THE AREA OF CONVECTION (INVEST 97W) PREVIOUSLY LOCATED
NEAR 24.3N 125.1E IS NOW LOCATED NEAR 24.2N 125.8E, APPROXIMATELY
167 NM SOUTHWEST OF KADENA AB. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY AND A 032011Z SSMI 85 GHZ MICROWAVE IMAGE DEPICT A
CONSOLIDATING LOW LEVEL CIRCULATION (LLC). CONVECTIVE BANDING
WRAPPING IN FROM THE SOUTHWEST INTO THE EASTERN QUADRANT OF THE
OBSCURED LLC CAN BE SEEN AS WELL. UPPER-LEVEL ANALYSIS REVEALS A
FAVORABLE ENVIRONMENT WITH LOW-MODERATE (10-20 KNOTS) VERTICAL WIND
SHEAR (VWS), AND GOOD EQUATORIAL OUTFLOW. GLOBAL MODELS ARE IN GOOD
AGREEMENT THAT 97W WILL CONTINUE TO TRACK NORTH-NORTHEASTWARD.
HOWEVER, GFS AND ECMWF HAVE THE SYSTEM INTENSIFYING OVER THE NEXT 24-
36 HOURS WHILE UKMET AND JGSM STILL DISAGREE WITH THE SYSTEM
DEPICTED WITH ONLY SLIGHT INTENSIFICATION.
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 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
042230Z.
//
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