Advisories

WTPN32 PGTW 252100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 29W (CHAMPI) WARNING NR 046//
RMKS/
1. TROPICAL STORM 29W (CHAMPI) WARNING NR 046    
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   251800Z --- NEAR 31.2N 127.4E
     MOVEMENT PAST SIX HOURS - 060 DEGREES AT 11 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 085 NM NORTHEAST QUADRANT
                            000 NM SOUTHEAST QUADRANT
                            095 NM SOUTHWEST QUADRANT
                            080 NM NORTHWEST QUADRANT
   REPEAT POSIT: 31.2N 127.4E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   260600Z --- 31.9N 130.5E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
                            000 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            060 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 080 DEG/ 19 KTS
    ---
   24 HRS, VALID AT:
   261800Z --- 32.6N 135.0E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
    ---
REMARKS:
252100Z POSITION NEAR 31.4N 128.2E.
25OCT26. TROPICAL STORM 29W (CHAMPI), LOCATED APPROXIMATELY 163
NM SOUTHWEST OF SASEBO, JAPAN, HAS TRACKED EAST-NORTHEASTWARD AT
11 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL IMAGERY
DEPICTS TROPICAL STORM (TS) 29W (CHAMPI) AS A HIGHLY ELONGATED AND
SHALLOW SYSTEM DEVOID OF CONVECTION. THE 251144Z ASCAT DATA REVEALED
THE SYSTEM HAS OPENED INTO A TROUGH, WITH THE STORM-FORCE WINDS
CONFINED TO THE NORTHEASTERN HEMISPHERE AND THE COLD SIDE OF
THE DEVELOPING FRONTAL SYSTEM. ENVIRONMENTAL ANALYSIS REVEALS A
HOSTILE ENVIRONMENT, CHARACTERIZED BY HIGH (30-35 KTS) VERTICAL WIND
SHEAR, COLD (25-26 C) SEA SURFACE TEMPERATURES, COPIOUS AMOUNTS OF
DRY AIR, AND JET INTERACTION. DETERMINISTIC MODEL GUIDANCE IS IN
STRONG AGREEMENT THAT 29W WILL CONTINUE TO TRACK NORTHEASTWARD FOR
THE NEXT 24 HOURS WHILE IT FURTHER DEGRADES. ELEVATED SURFACE WINDS
ARE POSSIBLE AS THE TROUGH PASSES OVER KYUSHU. 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.
MINIMUM CENTRAL PRESSURE AT 251800Z IS 1002 MB. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 251800Z IS 15 FEET. REFER TO TYPHOON 30W (IN-FA)
WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.//
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