Tropical Storm HINNAMNOR Advisory Di, 06.09.

MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TYPHOON 12W (HINNAMNOR) WARNING NR 036//
RMKS/
1. TYPHOON 12W (HINNAMNOR) WARNING NR 036
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   060000Z --- NEAR 36.5N 130.6E
     MOVEMENT PAST SIX HOURS - 045 DEGREES AT 31 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
     SATELLITE, RADAR AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
                            050 NM SOUTHEAST QUADRANT
                            050 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
                            095 NM SOUTHEAST QUADRANT
                            090 NM SOUTHWEST QUADRANT
                            045 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 165 NM NORTHEAST QUADRANT
                            170 NM SOUTHEAST QUADRANT
                            165 NM SOUTHWEST QUADRANT
                            090 NM NORTHWEST QUADRANT
   REPEAT POSIT: 36.5N 130.6E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   061200Z --- 43.0N 135.8E
   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
                            100 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT
                            220 NM SOUTHEAST QUADRANT
                            170 NM SOUTHWEST QUADRANT
                            080 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 020 DEG/ 37 KTS
    ---
   24 HRS, VALID AT:
   070000Z --- 49.9N 139.9E
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
                            090 NM SOUTHEAST QUADRANT
                            010 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
                            240 NM SOUTHEAST QUADRANT
                            170 NM SOUTHWEST QUADRANT
                            110 NM NORTHWEST QUADRANT
    ---
REMARKS:
060300Z POSITION NEAR 38.1N 131.9E.
06SEP22. TYPHOON (TY) 12W (HINNAMNOR), LOCATED APPROXIMATELY 111 NM
NORTHEAST OF BUSAN, SOUTH KOREA, HAS TRACKED NORTHEASTWARD AT 31
KNOTS OVER THE PAST SIX HOURS. TY 12W IS EMBEDDED WITHIN A STRONG
MIDLATITUDE SHORTWAVE TROUGH WITH WEAK FRONTAL STRUCTURE, AND HAS
COMMENCED EXTRA-TROPICAL TRANSITION. ANIMATED ENHANCED INFRARED
SATELLITE IMAGERY INDICATES ASYMMETRIC CONVECTION OBSCURING THE LOW-
LEVEL CIRCULATION CENTER (LLCC) WITH THE BULK OF THE DEEP CONVECTION
SHEARING POLEWARD DUE TO STRONG SOUTHERLY VERTICAL WIND SHEAR (VWS). A
060035Z AMSU-B 89GHZ MICROWAVE IMAGE INDICATES THE SYSTEM HAS
MAINTAINED A DEFINED LLCC WITH LIMITED CURVED BANDING, HOWEVER, A
DELTA RAIN REGION IS EVIDENT OVER THE NORTHERN QUADRANT. BASED ON THE
DEFINED LLCC, RJTD RADAR FIX AND A 060036Z ASCAT AMBIGUITY IMAGE,
THERE IS HIGH CONFIDENCE IN THE INITIAL POSITION. THE INITIAL
INTENSITY IS ASSESSED AT 75 KNOTS PRIMARILY BASED ON A 052124Z
RADARSAT2 SAR PASS SHOWING A SWATH OF 70-78 KNOT WINDS OVER THE EAST
AND SOUTHEAST QUADRANTS. DVORAK CURRENT INTENSITY ESTIMATES OF 4.5 (77
KNOTS) FROM RJTD AND PGTW ALSO SUPPORT THE ASSESSMENT. ALTHOUGH NOT
OVERLY IMPRESSIVE, SURFACE OBSERVATIONS FROM BUSAN AROUND 051900-
2100Z, INDICATED MAXIMUM WINDS OF 35 KNOTS GUSTING TO 64 KNOTS AND
MINIMUM SLP NEAR 967MB, WHICH CORRESPONDS TO A 75 KNOT SYSTEM. TY 12W
IS FORECAST TO RAPIDLY TRANSITION INTO A STRONG EXTRA-TROPICAL, COLD-
CORE LOW BY TAU 12 AS IT GAINS FRONTAL CHARACTERISTICS AND APPROACHES
THE MIDLATITUDE JET WITH VERY HIGH VWS (40-50 KNOTS). 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.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 060000Z IS 27 FEET.//
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