WTPS31 PGTW 120300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 08P (PITA) WARNING NR 004//
RMKS/
1. TROPICAL CYCLONE 08P (PITA) WARNING NR 004    
   01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   120000Z --- NEAR 21.9S 158.8W
     MOVEMENT PAST SIX HOURS - 095 DEGREES AT 17 KTS
     POSITION ACCURATE TO WITHIN 025 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
   BECOMING SUBTROPICAL
   RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT
                            065 NM SOUTHEAST QUADRANT
                            050 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   REPEAT POSIT: 21.9S 158.8W
    ---
   FORECASTS:
   12 HRS, VALID AT:
   121200Z --- 21.9S 156.5W
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   SUBTROPICAL
    ---
REMARKS:
120300Z POSITION NEAR 21.9S 158.2W.
12JAN25. TROPICAL CYCLONE 08P (PITA), LOCATED APPROXIMATELY 70 NM
SOUTHEAST OF RAROTONGA, HAS TRACKED EASTWARD AT 17 KNOTS OVER THE
PAST SIX HOURS. THE CURRENT POSITION IS ASSESSED WITH HIGH
CONFIDENCE IN THE CENTER OF THE EXPOSED LOW-LEVEL CIRCULATION
EVIDENT IN MULTISPECTRAL SATELLITE IMAGERY. THE INTENSITY ESTIMATE
OF 35 KNOTS IS CONSISTENT WITH RECENT SUBJECTIVE DVORAK ANALYSES
FROM MULTIPLE REPORTING AGENCIES AND SUPPORTED BY A 121931Z METOP-C
ASCAT PASS SHOWING 30-35 KNOT WINDS NEAR THE LOW-LEVEL CENTER.
TC 08P HAS LOST ITS DEEP CONVECTIVE COVER OVER THE PAST TWELVE
HOURS DUE TO INCREASING WESTERLY VERTICAL WIND SHEAR, WHICH IS
CURRENTLY ASSESSED AT 20-25 KNOTS. SIMULTANEOUSLY, THE SYSTEM HAS
STARTED TO EXHIBIT SUBTROPICAL CHARACTERISTICS AND IS EXPECTED TO
COMPLETE SUBTROPICAL TRANSITION WHILE DISSIPATING OVER THE NEXT
12 HOURS. THE REMNANT LOW LEVEL CIRCULATION WILL SPIN DOWN STEADILY
AS IT MEANDERS EASTWARD AND POLEWARD BEYOND THE FORECAST PERIOD AND
ENCOUNTERS CONDITIONS THAT ARE UNFAVORABLE FOR REDEVELOPMENT. 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 120000Z IS 997 MB.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 120000Z IS 12 FEET.
//
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