Subject: Pacific-NW: 1. Typhoon 13w (malakas) Warning Nr 019

From: SIU Weather Processor <[email-masked]>
Date: Fri, 24 Sep 2010 16:01:06 -0500

WTPN32 PGTW 242100
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TYPHOON 13W (MALAKAS) WARNING NR 019
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   241800Z --- NEAR 31.2N 142.7E
     MOVEMENT PAST SIX HOURS - 020 DEGREES AT 28 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON EYE FIXED BY A COMBINATION OF
     SATELLITE AND AIRCRAFT
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
                            030 NM SOUTHEAST QUADRANT
                            025 NM SOUTHWEST QUADRANT
                            030 NM NORTHWEST QUADRANT
   RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT
                            075 NM SOUTHEAST QUADRANT
                            055 NM SOUTHWEST QUADRANT
                            065 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
                            150 NM SOUTHEAST QUADRANT
                            130 NM SOUTHWEST QUADRANT
                            140 NM NORTHWEST QUADRANT
   REPEAT POSIT: 31.2N 142.7E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   250600Z --- 36.5N 145.9E
   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
                            020 NM SOUTHEAST QUADRANT
                            020 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT
                            060 NM SOUTHEAST QUADRANT
                            045 NM SOUTHWEST QUADRANT
                            065 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT
                            130 NM SOUTHEAST QUADRANT
                            110 NM SOUTHWEST QUADRANT
                            160 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 035 DEG/ 31 KTS
    ---
   24 HRS, VALID AT:
   251800Z --- 41.6N 150.5E
   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
    ---
REMARKS:
242100Z POSITION NEAR 32.5N 143.5E.
TYPHOON (TY) 13W (MALAKAS), LOCATED APPROXIMATELY 305 NM
SOUTH-SOUTHEAST OF TOKYO, JAPAN, HAS TRACKED NORTH-NORTHEASTWARD AT
28 KNOTS OVER THE PAST SIX HOURS. EXTRA-TROPICAL TRANSITION (ETT) IS
NOW WELL UNDERWAY IN THE UPPER LEVELS, WHILE THE LOW LEVELS MAINTAIN
CORE CONVECTION AND A CLEARLY DISCERNABLE 30 NM EYE. AN UPPER AIR
SOUNDING FROM CHICHI JIMA, JAPAN, REVEALS THAT STRONG
SOUTHWESTERLIES IN THE STORM'S SOUTHERN QUADRANT EXTEND THROUGHOUT
THE TROPOSPHERE WHILE WATER VAPOR IMAGERY SHOWS THE UPPER LEVEL
CLOUD SHIELD COUPLING WITH A VIGOROUS JET STREAM TO THE NORTH OF THE
STORM. TYPHOON 13W IS EXPECTED TO MAINTAIN VIGOROUS CONVECTION AND
WINDS ABOVE TYPHOON STRENGTH OVER THE NEXT 12 HOURS DUE TO GOOD
ORGANIZATION AT THE BOUNDARYLEVEL AND WARM SEA SURFACE TEMPERATURES
ALONG ITS TRACK. AS TYPHOON 13W CROSSES OVER THE KUROSHIO CURRENT AND
ENTERS COOLER WATER NEAR 35 DEGREES NORTH LATITUDE, AND TRACKS UNDER
INCREASINGLY HOSTILE VERTICAL WIND SHEAR, IT IS FORECAST TO WEAKEN
AND COMPLETE ETT BETWEEN TAU 12-24. HOWEVER, IT WILL MOVE UNDER A
DEEP AND NEGATIVELY TILTED MID-LATITUDE TROUGH AND IS EXPECTED TO RE-
INTENSIFY AS AN EXTRA-TROPICAL LOW AND MAINTAIN STORM FORCE SURFACE
WINDS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 241800Z IS 30 FEET. NEXT
WARNINGS AT 250300Z, 250900Z AND 251500Z.//

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
To unsubscribe from WX-TROPL send e-mail to [email-masked] with
"unsub wx-tropl" in the body of your message. For help with WX-TROPL
write to [email-masked]. For more information on tropical weather products, see the NHC Homepage at http://www.nhc.noaa.gov.