Subject: Pacific-NW:

From: SIU Weather Processor <[email-masked]>
Date: Sun, 7 Dec 1997 02:47:28 -0600

477
WTPN31 PGTW 070900

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1. TROPICAL STORM PAKA (05C) WARNING NR 020
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   070600Z3 --- 8.1N9 179.3E0
     MOVEMENT PAST SIX HOURS - 270 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 040 NM NORTH SEMICIRCLE
                            030 NM ELSEWHERE
   REPEAT POSIT: 8.1N9 179.3E0
    ---
   FORECASTS:
   12 HRS, VALID AT:
   071800Z6 --- 8.1N9 177.6E1
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 035 NM NORTH SEMICIRCLE

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                            025 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 275 DEG/ 10 KTS
    ---
   24 HRS, VALID AT:
   080600Z4 --- 8.3N1 175.5E8
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 36 HR POSIT: 275 DEG/ 12 KTS
    ---
   36 HRS, VALID AT:
   081800Z7 --- 8.6N4 173.1E2
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 48 HR POSIT: 280 DEG/ 13 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   090600Z5 --- 9.0N9 170.6E4
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   VECTOR TO 72 HR POSIT: 290 DEG/ 14 KTS

PAGE 04 RUEOMCB2735 UNCLAS
    ---
   72 HRS, VALID AT:
   100600Z7 --- 10.8N9 165.3E5
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
    ---
REMARKS:
070900Z POSITION 08.1N9 178.5E1
TROPICAL STORM PAKA (05C) CONTINUES MOVING WESTWARD AT 08
KNOTS.  THE WARNING POSITION IS BASED UPON 070530Z5
VISIBLE SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED
ON AN AVERAGE BETWEEN SATELLITE INTENSITY ESTIMATES OF 35
AND 45 KNOTS FROM PGTW AND KGWC SATELLITE ANALYSTS.
ANIMATED VISIBLE AND INFRARED SATELLITE IMAGERY CONTINUES
TO INDICATE MODERATE VERTICAL WIND SHEAR ACROSS THE
SYSTEM.  THE SYSTEM IS EXPECTED TO TRACK WESTWARD THE
NEXT 12 HOURS.  BY THE 24 HOUR POSITION, IT IS EXPECTED
TO GRADUALLY TURN MORE WEST-NORTHWESTWARD.  THERE IS NO
SIGNIFICANT CHANGE TO THE INTENSITY FORECAST.  MAXIMUM

PAGE 05 RUEOMCB2735 UNCLAS
SIGNIFICANT WAVE HEIGHT AT 070600Z IS 15 FEET.  REFER TO
WWPW30 PGFW FOR ADDITIONAL SEA HEIGHT INFORMATION.  NEXT
WARNINGS AT 071500Z3 (DTG 071351Z7), 072100Z0 (DTG
071951Z3), 080300Z1 (DTG 080151Z5) AND 080900Z7 (DTG
080751Z1).//
BT
#2735

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