Subject: Pacific-NW: 1. Super Typhoon Rosie (10w) Warning Nr 020 [231500]

From: SIU Weather Processor <[email-masked]>
Date: Wed, 23 Jul 1997 09:32:07 -0500

658
WTPN31 PGTW 231500
1. SUPER TYPHOON ROSIE (10W) WARNING NR 020
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   231200Z8 --- 20.7N9 131.9E4
     MOVEMENT PAST SIX HOURS - 360 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON EYE FIXED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 110 NM EAST SEMICIRCLE
                            090 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 250 NM EAST SEMICIRCLE
                            220 NM ELSEWHERE
   REPEAT POSIT: 20.7N9 131.9E4
    ---
   FORECASTS:
   12 HRS, VALID AT:
   240000Z6 --- 22.7N1 132.2E8
   MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 105 NM EAST SEMICIRCLE
                            085 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 240 NM EAST SEMICIRCLE
                            215 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 010 DEG/ 12 KTS
    ---
   24 HRS, VALID AT:
   241200Z9 --- 25.0N7 132.7E3
   MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 100 NM EAST SEMICIRCLE
                            080 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 235 NM EAST SEMICIRCLE
                            210 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 005 DEG/ 14 KTS
    ---
   36 HRS, VALID AT:
   250000Z7 --- 27.8N7 133.0E7
   MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
   RADIUS OF 050 KT WINDS - 090 NM EAST SEMICIRCLE
                            070 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 225 NM EAST SEMICIRCLE
                            200 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 355 DEG/ 14 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   251200Z0 --- 30.6N9 132.7E3
   MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT
   RADIUS OF 050 KT WINDS - 080 NM EAST SEMICIRCLE
                            060 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 215 NM EAST SEMICIRCLE
                                   OVER WATER
                            185 NM ELSEWHERE OVER WATER
   VECTOR TO 72 HR POSIT: 350 DEG/ 12 KTS
    ---
   72 HRS, VALID AT:
   261200Z1 --- 35.3N1 131.9E4
   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
   RADIUS OF 050 KT WINDS - 035 NM EAST SEMICIRCLE
                                   OVER WATER
                            030 NM ELSEWHERE OVER WATER
   RADIUS OF 035 KT WINDS - 160 NM EAST SEMICIRCLE
                                   OVER WATER
                            120 NM ELSEWHERE OVER WATER
    ---
REMARKS:
231500Z1 POSITION 21.2N5  132.0E6
SUPER TYPHOON ROSIE (10W) IS MOVING NORTHWARD AT 08
KNOTS. THE WARNING POSITION AND INTENSITY ARE BASED ON
231132Z INFRARED SATELLITE IMAGERY. CURRENT WIND RADII
HAVE BEEN ADJUSTED USING 230600Z SURFACE SHIP REPORTS.
THERE IS NO SIGNIFICANT CHANGE IN FORECAST REASONING FROM
THE PREVIOUS WARNING. THIS SYSTEM IS EXPECTED TO
GRADUALLY WEAKEN AS IT MOVES GENERALLY NORTHWARD THROUGH
THE FORECAST PERIOD, THEN WEAKEN MORE RAPIDLY AFTER IT
MAKES LANDFALL IN SOUTHERN JAPAN BEYOND 48 HOURS. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 231200Z IS 34 FEET. REFER TO
WWPW31 PGFW FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT
WARNINGS AT 232100Z8 (DTG 231951Z1), 240300Z9 (DTG
240151Z3), 240900Z5 (DTG 240751Z9) AND 241500Z2 (DTG
241351Z6).//

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