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发表于 2009-10-4 17:02
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WTPN34 PGTW 040900
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. SUPER TYPHOON 20W (MELOR) WARNING NR 021
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
040600Z --- NEAR 17.0N 140.9E
MOVEMENT PAST SIX HOURS - 285 DEGREES AT 14 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 185 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
185 NM NORTHWEST QUADRANT
REPEAT POSIT: 17.0N 140.9E
---
FORECASTS:
12 HRS, VALID AT:
041800Z --- 18.1N 138.2E
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 055 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
085 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 305 DEG/ 14 KTS
---
24 HRS, VALID AT:
050600Z --- 19.6N 135.7E
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 165 NM NORTHEAST QUADRANT
135 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 325 DEG/ 15 KTS
---
36 HRS, VALID AT:
051800Z --- 21.9N 133.8E
MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
140 NM SOUTHEAST QUADRANT
135 NM SOUTHWEST QUADRANT
155 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 355 DEG/ 18 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
060600Z --- 25.4N 133.3E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
075 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
145 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
155 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 030 DEG/ 18 KTS
---
72 HRS, VALID AT:
070600Z --- 31.8N 137.3E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
075 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
155 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
155 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 045 DEG/ 23 KTS
---
LONG RANGE OUTLOOK:
NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM
ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY
NEAR 20 KT EACH DAY.
---
96 HRS, VALID AT:
080600Z --- 37.7N 145.6E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
VECTOR TO 120 HR POSIT: 050 DEG/ 30 KTS
---
120 HRS, VALID AT:
090600Z --- 44.4N 159.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
---
REMARKS:
040900Z POSITION NEAR 17.3N 140.2E.
SUPER TYPHOON (STY) 20W (MELOR), LOCATED APPROXIMATELY 915 NM
SOUTHEAST OF KADENA, HAS TRACKED WEST-NORTHWESTWARD AT 14 KNOTS OVER
THE PAST SIX HOURS. MID TO UPPER-LEVEL SUBTROPICAL RIDGING TO THE
NORTH HAS ALLOWED THE STY TO TRACK IN A GENERAL WEST TO
NORTHWESTWARD DIRECTION OVER THE PAST SIX HOURS. OUTFLOW INTO UPPER
LEVEL TROUGHING IN THE VICINITY OF THE MARSHALL ISLANDS HAS HELPED
THE SYSTEM TO MAINTAIN AN INTENSITY OF 140 KNOTS, IN ADDITION TO
STRONG RADIAL OUTFLOW AND INCREASED OCEAN HEAT CONTENT. A WELL-
DEFINED, 21 NM EYE, IS CURRENTLY EVIDENT IN VISIBLE SATELLITE
IMAGERY. THE ONLY CHANGES FROM THE PREVIOUS FORECAST ARE THAT THE
WIND RADII HAVE BEEN EXPANDED AT TAU 72 (JUST SOUTH OF TOKYO) TO
ACCOUNT FOR EXTRATROPICAL TRANSITIONING, AND THE SYSTEM HAS BEEN
SLOWED AT TAU 96 AND 120. THE SYSTEM IS EXPECTED TO BE FULLY
EXTRATROPICAL NEAR 40N, OR TAU 96. A 040000Z SKEW-T SOUNDING FROM
MINAMIDAITOJIMA (47945) INDICATES WESTERLIES HAVE CONTINUED TO
PENETRATE DEEPER INTO THE TROPICS (25.8N). THIS LATITUDE ROUGHLY
COINCIDES WITH THE FORECASTED POINT OF RECURVATURE. THE FORECAST
REMAINS GENERALLY FASTER THAN, AND INSIDE THE MODEL CONSENSUS,
ACCOUNTING FOR THE WESTERNMOST OUTLIERS, JGSM AND WBAR, AND THE
STRONG WESTERLIES ALOFT. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 040000Z
IS 39 FEET. NEXT WARNINGS AT 040900Z, 041500Z, 042100Z AND 050300Z.
REFER TO TYPHOON 19W (PARMA) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY
UPDATES.
//
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