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JTWC09Z發佈Final Warning
WTXS32 PGTW 100900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 27S (ODETTE) WARNING NR 022//
RMKS/
1. TROPICAL CYCLONE 27S (ODETTE) WARNING NR 022
02 ACTIVE TROPICAL CYCLONES IN SOUTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
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WARNING POSITION:
100600Z --- NEAR 21.3S 113.0E
MOVEMENT PAST SIX HOURS - 175 DEGREES AT 24 KTS
POSITION ACCURATE TO WITHIN 040 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
REPEAT POSIT: 21.3S 113.0E
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FORECASTS:
12 HRS, VALID AT:
101800Z --- 25.1S 111.4E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
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REMARKS:
100900Z POSITION NEAR 22.3S 112.6E.
10APR21. TROPICAL CYCLONE 27S (ODETTE), LOCATED APPROXIMATELY 86
NM NORTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED SOUTHWARD AT 24
KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY (MSI) INDICATES TC ODETTE CONTINUES TO SPIRAL INWARDS
TOWARDS TC 26S AS PART OF FUJIWHARA INTERACTION. THE SYSTEM HAS
RAPIDLY WEAKENED, THOUGH THERE HAS BEEN A FLARE UP IN DEEP
CONVECTION NEAR THE CENTER IN THE PAST FEW HOURS, LIKELY A RESULT OF
CONVERGENCE FLOW WITH THE OUTER BANDS OF TC 26S. THE INITIAL
POSITION IS PLACED WITH MODERATE CONFIDENCE BASED ON A MANUAL TRACK
OF THE LOW LEVEL VORTEX THROUGH THE ANIMATED VISIBLE IMAGERY. THE
OVERALL SYSTEM INTENSITY HAS BEEN LOWERED TO 30 KNOTS BASED ON A
PGTW DVORAK INTENSITY ESTIMATE OF T2.0 (30 KTS). AUTOMATED CIMSS ADT
ESTIMATES ARE MUCH HIGHER BUT ARE CONSIDERED UNREALISTIC DUE TO
FIXING ON THE TRANSIENT CONVECTIVE ACTIVITY. AN EARLIER 100012Z
ASCAT-A PASS REVEALED A VERY SMALL AREA OF GALE FORCE WINDS IN THE
EASTERN HEMISPHERE, BUT THESE ARE NOT CONSIDERED REPRESENTATIVE OF
THE OVERALL INTENSITY, THOUGH NEAR-GALE FORCE WINDS COULD
POTENTIALLY STILL BE PRESENT ON THE EASTERN SIDE OF THE CIRCULATION.
ENVIRONMENTAL CONDITIONS ARE INCREASINGLY HOSTILE, WITH AN ESTIMATED
15-20 KNOTS OF EASTERLY VERTICAL WIND SHEAR (VWS) AND A CONSTRAINED
OUTFLOW REGIME WHICH IS INHIBITING THE SYSTEM. TC 27S WILL CONTINUE
TO TRACK TOWARDS THE SOUTHWEST, SPIRALING CLOSER TO TC 26S WHILE
FULLY DISSIPATING AS A DISTINCT CIRCULATION WITHIN THE NEXT 12
HOURS. DYNAMIC MODEL GUIDANCE IS IN OVERALL GOOD AGREEMENT ON THE
MERGER AND DISSIPATION SCENARIO, LENDING HIGH CONFIDENCE TO THE JTWC
FORECAST TRACK. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE
JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY
MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 100600Z IS 13 FEET. REFER TO TROPICAL CYCLONE 26S (SEROJA)
WARNINGS (WTXS31 PGTW) FOR SIX-HOURLY UPDATES.//
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