|
c789654|2011-9-19 18:13
|
顯示全部樓層
WTPN31 PGTW 190900
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 18W (ROKE) WARNING NR 032
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
190600Z --- NEAR 27.7N 130.6E
MOVEMENT PAST SIX HOURS - 010 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
REPEAT POSIT: 27.7N 130.6E
---
FORECASTS:
12 HRS, VALID AT:
191800Z --- 28.8N 131.3E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 050 DEG/ 09 KTS
---
24 HRS, VALID AT:
200600Z --- 29.9N 132.8E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 115 NM NORTHEAST QUADRANT
115 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
105 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 045 DEG/ 14 KTS
---
36 HRS, VALID AT:
201800Z --- 32.0N 135.1E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 115 NM NORTHEAST QUADRANT
115 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 040 DEG/ 22 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
210600Z --- 35.4N 138.5E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
VECTOR TO 72 HR POSIT: 035 DEG/ 36 KTS
---
72 HRS, VALID AT:
220600Z --- 46.4N 150.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
---
REMARKS:
190900Z POSITION NEAR 28.0N 130.8E.
TROPICAL STORM (TS) 18W (ROKE), LOCATED APPROXIMATELY 650 NM SOUTH-
WEST OF YOKOSUKA, JAPAN, HAS TRACKED JUST EAST OF NORTHWARD AT
08 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY (MSI) SHOWS CONVECTIVE BANDING WRAPPING INTO THE LOW
LEVEL CIRCULATION CHAS SLIGHTLY DEEPENED. THIS IS ALSO EVIDENT ON A
190548Z AMSRE MICROWAVE IMAGE. THE INITIAL POSITION IS BASED ON THE
MSI. THE INITIAL INTENSITY IS SUPPORTERD BY DVORAK ESTIMATES FROM
PGTW, KNES, AND RJTD. WATER VAPOR IMAGERY INDICATES EXCELLENT
EQUATORWARD OUTFLOW, HOWEVER, IT ALSO SHOWS SUBSIDENCE ALONG THE
NORTHERN PERIPHERY, WHICH IS LIMITING POLEWARD OUTFLOW. THE
SUBTROPICAL STEERING RIDGE TO THE NORTHEAST HAS WEAKENED AND ALLOWED
TS 18W TO TURN NORTHWARD. THE RIDGE WILL CONTINUE TO WEAKEN DUE TO
AN APPROACHING MID-LATITUDE TROUGH AND ALLOW TS 18W TO RECURVE
NORTHEASTWARD INTO THE BAROCLINIC ZONE. THE SYSTEM SHOULD MAINTAIN
STORM INTENSITY OVER THE NEXT 24 HOURS AS POLEWARD OUTFLOW IMPROVES
INTO THE APPROACHING TROUGH. AFTER TAU 24, IT IS EXPECTED TO WEAKEN
DUE TO INCREASING VERTICAL WIND SHEAR, COOLING SEA SURFACE
TEMPERATURES, AND MAKING LANDFALL SOUTHWEST OF TOKYO. TS 18W WILL
BECOME EMBEDDED WITHIN THE BAROCLINIC ZONE AND COMPLETE EXTRA-
TROPICAL TRANSITION BY TAU 72. THE AVAILABLE NUMERICAL MODEL
GUIDANCE IS IN TIGHT AGREEMENT. THIS FORECAST IS OVER BUT SLIGHTLY
FASTER THAN MODEL CONSENSUS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT
190600Z IS 26 FEET. NEXT WARNINGS AT 191500Z, 192100Z, 200300Z AND
200900Z. REFER TO TYPHOON 19W (SONCA) WARNINGS (WTPN32 PGTW) FOR SIX-
HOURLY UPDATES.//
NNNN
|
|