簽到天數: 868 天 [LV.10]以壇為家III
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jrchang5|2020-1-17 09:05
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JTWC 16/18Z升格為Tropical Cyclone 08P首報,定強40kts。
WTPS31 PGTW 162100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 08P (TINO) WARNING NR 001//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/152051ZJAN2020//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. TROPICAL CYCLONE 08P (TINO) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
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WARNING POSITION:
161800Z --- NEAR 13.7S 177.8E
MOVEMENT PAST SIX HOURS - 135 DEGREES AT 14 KTS
POSITION ACCURATE TO WITHIN 045 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 290 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
360 NM NORTHWEST QUADRANT
REPEAT POSIT: 13.7S 177.8E
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FORECASTS:
12 HRS, VALID AT:
170600Z --- 16.0S 179.9E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 130 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 320 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
300 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 140 DEG/ 16 KTS
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24 HRS, VALID AT:
171800Z --- 18.3S 177.9W
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 130 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 300 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
270 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 140 DEG/ 16 KTS
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36 HRS, VALID AT:
180600Z --- 20.7S 175.8W
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 310 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
260 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 140 DEG/ 18 KTS
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EXTENDED OUTLOOK:
48 HRS, VALID AT:
181800Z --- 23.4S 173.1W
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 330 NM NORTHEAST QUADRANT
240 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
230 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 140 DEG/ 24 KTS
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72 HRS, VALID AT:
191800Z --- 30.6S 165.9W
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 310 NM NORTHEAST QUADRANT
280 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
260 NM NORTHWEST QUADRANT
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REMARKS:
162100Z POSITION NEAR 14.3S 178.3E.
16JAN20. TROPICAL CYCLONE (TC) 08P (TINO), LOCATED APPROXIMATELY 266
NM NORTH OF SUVA, FIJI, HAS TRACKED SOUTHEASTWARD AT 14 KNOTS OVER
THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED (EIR) SATELLITE
IMAGERY DEPICTS A CONSOLIDATING SYSTEM WITH DEEP CONVECTIVE BANDING
WRAPPING TIGHTLY INTO A DEFINED LOW-LEVEL CIRCULATION CENTER (LLCC),
WHICH SUPPORTS THE CURRENT POSITION WITH FAIR CONFIDENCE. EIR ALSO
CONTINUES TO SHOW EXTENSIVE AREAS OF DEEP CONVECTION OVER THE
NORTHERN SEMICIRCLE ASSOCIATED WITH STRONG LOW-LEVEL CONVERGENT
WESTERLY FLOW AND UPPER-LEVEL DIVERGENCE. A 161714Z SSMIS 91GHZ
IMAGE DEPICTS A PRIMARY BAND OF DEEP CONVECTION OVER THE SOUTHERN
AND WESTERN QUADRANTS WITH FRAGMENTED BANDING ELSEWHERE BUT CLEARLY
REFLECTS THE IMPROVED ORGANIZATION THAT HAS OCCURRED OVER THE PAST
SIX TO TWELVE HOURS. THE CURRENT INTENSITY IS ASSESSED AT 40 KNOTS
BASED ON AN AVERAGE OF DVORAK ESTIMATES RANGING FROM T2.5 TO T3.0
(35 TO 45 KNOTS). UPPER-LEVEL ANALYSIS INDICATES IMPROVED OUTFLOW
WITH A POINT SOURCE NOW POSITIONED OVER THE CENTER AND NEAR-RADIAL
OUTFLOW, AND DECREASED VERTICAL WIND SHEAR (VWS). SST VALUES OF 29C
REMAIN FAVORABLE. OVERALL, THERE IS HIGH CONFIDENCE IN THE JTWC
FORECAST TRACK DUE TO A RELATIVELY SIMPLE STEERING PATTERN WITH THE
SUBTROPICAL RIDGE (STR) ENTRENCHED TO THE EAST THROUGH THE FORECAST
PERIOD. NUMERICAL MODEL GUIDANCE IS IN TIGHT AGREEMENT THROUGH TAU
36 WITH A 40-45NM SPREAD IN SOLUTIONS, AND REMAINS IN GOOD AGREEMENT
THROUGH TAU 72 WITH A 145NM SPREAD IN SOLUTIONS AT TAU 72.
ADDITIONALLY, THE ECMWF ENSEMBLE REMAINS IN TIGHT AGREEMENT LENDING
MORE CONFIDENCE TO THE FORECAST. TC 08P IS FORECAST TO INTENSIFY
SLOWLY DUE TO THE BROAD NATURE OF THE SYSTEM, HOWEVER, IT IS
EXPECTED TO PEAK AT 60 KNOTS BY TAU 36 AS UPPER-LEVEL CONDITIONS
REMAIN FAVORABLE. AFTER TAU 48, TC 08P WILL WEAKEN GRADUALLY AS IT
TRACKS OVER COOLER SST (LESS THAN 26C) AND BEGINS EXTRA-TROPICAL
TRANSITION (ETT). BY TAU 72, SST VALUES WILL DECREASE SIGNIFICANTLY
(20C) AND VWS WILL INCREASE TO STRONG LEVELS (30-40 KNOTS), WHICH
WILL FURTHER WEAKEN THE SYSTEM. TC 08P WILL COMPLETE ETT BY TAU 72
AS IT GAINS FRONTAL CHARACTERISTICS AND TRACKS NEAR THE JET STREAM.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 161800Z IS 20 FEET. NEXT WARNINGS
AT 170300Z, 170900Z, 171500Z AND 172100Z.
2. THIS CANCELS AND SUPERSEDES REF A (WTPS21 PGTW 152100).//
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