Subject: Pacific-NW: 1. Typhoon Paka (05c) Warning Nr 040

From: SIU Weather Processor <[email-masked]>
Date: Fri, 12 Dec 1997 02:05:28 -0600

438
WTPN31 PGTW 120900
1. TYPHOON PAKA (05C) WARNING NR 040
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   120600Z9 --- 7.8N5 165.8E0
     MOVEMENT PAST SIX HOURS - 285 DEGREES AT 07 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON EYE FIXED BY A COMBINATION OF
     SATELLITE AND RADAR
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT
   RADIUS OF 100 KT WINDS - 015 NM
   RADIUS OF 050 KT WINDS - 080 NM NORTH SEMICIRCLE
                            060 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 130 NM NORTH SEMICIRCLE
                            100 NM ELSEWHERE
   REPEAT POSIT: 7.8N5 165.8E0
    ---
   FORECASTS:
   12 HRS, VALID AT:
   121800Z2 --- 8.1N9 164.5E6
   MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 085 NM NORTH SEMICIRCLE
                            060 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTH SEMICIRCLE
                            110 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 280 DEG/ 09 KTS
    ---
   24 HRS, VALID AT:
   130600Z0 --- 8.4N2 162.7E6
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 085 NM NORTH SEMICIRCLE
                            065 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 150 NM NORTH SEMICIRCLE
                            120 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 280 DEG/ 11 KTS
    ---
   36 HRS, VALID AT:
   131800Z3 --- 8.8N6 160.6E3
   MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
   RADIUS OF 100 KT WINDS - 025 NM
   RADIUS OF 050 KT WINDS - 090 NM NORTH SEMICIRCLE
                            070 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 155 NM NORTH SEMICIRCLE
                            125 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 285 DEG/ 13 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   140600Z1 --- 9.4N3 158.0E4
   MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
   RADIUS OF 100 KT WINDS - 025 NM
   RADIUS OF 050 KT WINDS - 090 NM NORTH SEMICIRCLE
                            070 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 160 NM NORTH SEMICIRCLE
                            130 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 280 DEG/ 14 KTS
    ---
   72 HRS, VALID AT:
   150600Z2 --- 10.5N6 152.3E1
   MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
   RADIUS OF 100 KT WINDS - 025 NM
   RADIUS OF 050 KT WINDS - 090 NM NORTH SEMICIRCLE
                            070 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 160 NM NORTH SEMICIRCLE
                            130 NM ELSEWHERE
    ---
REMARKS:
120900Z POSITION: 7.9N6 165.5E2
TYPHOON PAKA (05C) CONTINUES TO INTENSIFY AS IT TRACKS
WEST-NORTHWESTWARD AT 07 KNOTS.  THE WARNING POSITION
IS BASED ON A COMBINATION OF 120530Z1 VISIBLE SATELLITE
IMAGERY AND A 120600Z9 DOPPLER RADAR OBSERVATION FROM
KWAJALEIN (WMO 91366).  THE WARNING INTENSITY IS BASED
UPON A SATELLITE DERIVED INTENSITY ESTIMATE OF 115 KNOTS.
THERE IS NO SIGNIFICANT CHANGE TO THE FORECAST TRACK
PHILOSOPHY.  MAXIMUM SIGNIFICANT WAVE HEIGHT AT 120600Z
IS 23 FEET.  REFER TO WWPW30 PGFW FOR ADDITIONAL SEA
HEIGHT INFORMATION.  NEXT WARNINGS AT 121500Z9 (DTG
121351Z3), 122100Z6 (DTG 121951Z9), 130300Z7 (DTG
130151Z1) AND 130900Z3 (DTG 130751Z6).//

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