Subject: Pacific-NW: 1. Typhoon Paka (05c) Warning Nr 073

From: SIU Weather Processor <[email-masked]>
Date: Sat, 20 Dec 1997 07:56:01 -0600

426
WTPN31 PGTW 201500
1. TYPHOON PAKA (05C) WARNING NR 073
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   201200Z5 --- 17.8N6 132.9E5
     MOVEMENT PAST SIX HOURS - 325 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
   RADIUS OF 050 KT WINDS - 065 NM NORTH QUADRANT
                            040 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 160 NM NORTH QUADRANT
                            065 NM ELSEWHERE
   REPEAT POSIT: 17.8N6 132.9E5
    ---
   FORECASTS:
   12 HRS, VALID AT:
   210000Z3 --- 19.0N0 131.9E4
   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
   RADIUS OF 050 KT WINDS - 060 NM NORTH QUADRANT
                            035 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 150 NM NORTH QUADRANT
                            055 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 300 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   211200Z6 --- 19.7N7 130.6E0
   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
   RADIUS OF 050 KT WINDS - 055 NM NORTH QUADRANT
                            030 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTH QUADRANT
                            050 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 265 DEG/ 07 KTS
    ---
   36 HRS, VALID AT:
   220000Z4 --- 19.6N6 129.2E4
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 050 KT WINDS - 045 NM NORTH QUADRANT
                            030 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 110 NM NORTH QUADRANT
                            040 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 245 DEG/ 07 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   221200Z7 --- 19.0N0 127.9E9
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   RADIUS OF 035 KT WINDS - 080 NM NORTH QUADRANT
                            035 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 240 DEG/ 07 KTS
    ---
   72 HRS, VALID AT:
   231200Z8 --- 17.7N5 125.5E3
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
    ---
REMARKS:
201500Z POSITION: 18.1N0 132.6E2
TYPHOON PAKA (05C) HAS INCREASED ITS FORWARD SPEED AS IT
HAS TRACKED NORTHWESTWARD AT 08 KNOTS DURING THE PAST 06
HOURS.  MICROWAVE IMAGERY AT 200833Z INDICATES THAT THE
LOW LEVEL CIRCULATION CENTER HAS NOT YET BECOME EXPOSED.
THE WARNING POSITION IS BASED UPON ANALYSIS OF 201130Z7
ENHANCED INFRARED IMAGERY BY PGTW AND KGWC SATELLITE
ANALYSTS.  THE FORECAST TRACK HAS CHANGED SOME FROM THE
PREVIOUS WARNING TO REFLECT THE CONTINUED NORTHWESTWARD
MOTION OF THE SYSTEM HOWEVER, THE LOW LEVEL CIRCULATION
CENTER OF TYPHOON PAKA (05C) SHOULD BECOME SEPARATED BY
24 HOURS AND THEN TURN SOUTHWESTWARD.  THE SYSTEM
CONTINUES TO WEAKEN AT A RAPID PACE, AND IS FORECASTED
TO CONTINUE THIS TREND.  MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 201200Z IS 24 FEET.  REFER TO WWPW31 PGFW FOR
ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT
202100Z5 (DTG 201951Z8), 210300Z6 (DTG 210151Z9),
210900Z2 (DTG 210751Z6) AND 211500Z9 (DTG 211351Z3).//

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
To unsubscribe from WX-TROPL send e-mail to [email-masked] with
"unsub wx-tropl" in the body of your message.  For help with the
WX-TROPL or WX-TALK discussion groups write to [email-masked] or see
http://www.inlink.com/~landmb/intro.html.  For more information on
tropical weather products, see the NCEP Products Homepage at
http://www.nhc.noaa.gov/nhcprod.html.