WTPN31 PGTW 240900    
1. TROPICAL STORM 26W (SHANSHAN) WARNING NR 028    
   DOWNGRADED FROM TYPHOON 26W
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   240600Z2 --- NEAR 35.2N0 173.9E0
     MOVEMENT PAST SIX HOURS - 040 DEGREES AT 33 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
   EXTRATROPICAL
   REPEAT POSIT: 35.2N0 173.9E0
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   FORECASTS:
   12 HRS, VALID AT:
   241800Z5 --- 39.4N6 177.0E5
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   EXTRATROPICAL
   VECTOR TO 24 HR POSIT: 025 DEG/ 23 KTS
    ---
   24 HRS, VALID AT:
   250600Z3 --- 43.7N4 179.5E2
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   EXTRATROPICAL
   VECTOR TO 36 HR POSIT: 045 DEG/ 16 KTS
    ---
   36 HRS, VALID AT:
   251800Z6 --- 46.0N0 177.3W8
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   EXTRATROPICAL
    ---
REMARKS:
240900Z5 POSITION NEAR 36.3N2 174.7E9.
TROPICAL STORM (TS) 26W (SHANSHAN), LOCATED APPROXIMATELY 600 NM
NORTHWEST OF MIDWAY ISLAND, HAS TRACKED NORTHEASTWARD AT 33 KNOTS 
DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 240530Z4
VISIBLE AND INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS 
BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55 AND 65 KNOTS.
ANIMATED SATELLITE IMAGERY INDICATES THE STORM HAS COMPLETED
EXTRATROPICAL TRANSITION AND CONTINUED TO WEAKEN OVER THE PAST 6
HOURS. UW-CIMSS ANALYSIS HAS THE SYSTEM UNDER AN AREA OF MODERATE
VERTICAL WIND SHEAR BETWEEN THE UPPER LEVEL RIDGE TO THE SOUTH AND 
THE MID-LATITUDE SYSTEM TO THE NORTH-NORTHWEST. TS 26W HAS 
ACCELERATED RAPIDLY OVER THE PAST 6 HOURS AND IS FORECAST TO 
CONTINUE MERGING WITH THE MID-LATITUDE SYSTEM. INCREASING WESTERLY 
SHEAR ASSOCIATED WITH THE MID-LATITUDE TROUGH WILL SERVE TO CONTINUE 
WEAKENING THE SYSTEM. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 240600Z2 IS 
26 FEET. THIS IS THE FINAL TROPICAL WARNING ON THIS SYSTEM BY THE 
JOINT TYPHOON WARNING CENTER (NAVPACMETOCCEN). REFER TO 
NAVPACMETOCCEN YOKOSUKA (WWPW30 RJTX) FOR ADDITIONAL SEA HEIGHT 
INFORMATION AND FUTURE GALE WARNINGS.//