Subject: Pacific-NW: 1. Super Typhoon Paka (05c) Warning Nr 064

From: SIU Weather Processor <[email-masked]>
Date: Thu, 18 Dec 1997 03:11:40 -0600

646
WTPN31 PGTW 180900
1. SUPER TYPHOON PAKA (05C) WARNING NR 064
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   180600Z5 --- 14.6N1 138.9E1
     MOVEMENT PAST SIX HOURS - 290 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON EYE FIXED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
   RADIUS OF 100 KT WINDS - 030 NM

PAGE 03 RUHPSGG5058 UNCLAS
   RADIUS OF 050 KT WINDS - 080 NM NORTHEAST SEMICIRCLE
                            045 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 150 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   REPEAT POSIT: 14.6N1 138.9E1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   181800Z8 --- 15.1N7 137.6E7
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 030 NM
   RADIUS OF 050 KT WINDS - 080 NM NORTHEAST SEMICIRCLE
                            045 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 280 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   190600Z6 --- 15.3N9 136.2E2
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT

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   RADIUS OF 100 KT WINDS - 025 NM
   RADIUS OF 050 KT WINDS - 075 NM NORTHEAST SEMICIRCLE
                            045 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 285 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   191800Z9 --- 15.7N3 134.5E3
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 025 NM
   RADIUS OF 050 KT WINDS - 075 NM NORTHEAST SEMICIRCLE
                            045 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 275 DEG/ 07 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   200600Z8 --- 15.8N4 133.1E8

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   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 070 NM NORTHEAST SEMICIRCLE
                            040 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 270 DEG/ 09 KTS
    ---
   72 HRS, VALID AT:
   210600Z9 --- 15.8N4 129.3E5
   MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 060 NM NORTHEAST SEMICIRCLE
                            040 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 135 NM NORTHEAST SEMICIRCLE
                            065 NM ELSEWHERE
    ---
REMARKS: 180900Z8 POSITION: 14.7N2 138.4E6
LATEST SATELLITE IMAGERY INDICATES THAT SUPER TYPHOON
PAKA (05C) IS MOVING TOWARDS THE WEST-NORTHWEST AT 08

PAGE 06 RUHPSGG5058 UNCLAS
KNOTS.  DURING THE PAST 6 HOURS PAKA HAS SHOWN SIGNS OF
WEAKENING SLIGHTLY; CURRENT INTENSITY IS NOW ESTIMATED AT
135 KNOTS.  CONDITIONS ARE STILL FAVORABLE FOR PAKA TO
REMAIN AN INTENSE CYCLONE FOR THE DURATION OF THIS
FORECAST PERIOD.  MAXIMUM SIGNIFICANT WAVE HEIGHT AT
180600Z IS 28 FEET.  REFER TO WWPW30 PGFW FOR ADDITIONAL
SEA HEIGHT INFORMATION.  NEXT WARNINGS AT 181500Z5,
182100Z2, 190300Z3 AND 190900Z9.//
BT
#5058

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