Subject: Pacific-NW: 1. Super Typhoon Keith (29w) Warning Nr 023

From: SIU Weather Processor <[email-masked]>
Date: Sun, 2 Nov 1997 02:33:57 -0600

525
WTPN31 PGTW 020900
1. SUPER TYPHOON KEITH (29W) WARNING NR 023
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   020600Z8 --- 14.5N0 145.8E8
     MOVEMENT PAST SIX HOURS - 295 DEGREES AT 15 KTS
     POSITION ACCURATE TO WITHIN 045 NM
     POSITION BASED ON EYE FIXED BY A COMBINATION OF
     SATELLITE, RADAR AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 155 KT, GUSTS 190 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 075 NM SOUTHEAST SEMICIRCLE
                                   OVER WATER
                            055 NM ELSEWHERE OVER WATER
   RADIUS OF 035 KT WINDS - 135 NM SOUTHEAST SEMICIRCLE
                                   OVER WATER
                            105 NM ELSEWHERE OVER WATER
   REPEAT POSIT: 14.5N0 145.8E8
    ---
   FORECASTS:
   12 HRS, VALID AT:
   021800Z1 --- 15.3N9 143.3E1
   MAX SUSTAINED WINDS - 155 KT, GUSTS 190 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 075 NM SOUTHEAST SEMICIRCLE
                            055 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 135 NM SOUTHEAST SEMICIRCLE
                                   OVER WATER
                            100 NM ELSEWHERE OVER WATER
   VECTOR TO 24 HR POSIT: 290 DEG/ 12 KTS
    ---
   24 HRS, VALID AT:
   030600Z9 --- 16.2N9 141.0E6
   MAX SUSTAINED WINDS - 150 KT, GUSTS 180 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 075 NM EAST SEMICIRCLE
                            055 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 135 NM EAST SEMICIRCLE
                            100 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 295 DEG/ 11 KTS
    ---
   36 HRS, VALID AT:
   031800Z2 --- 17.1N9 138.9E1
   MAX SUSTAINED WINDS - 145 KT, GUSTS 175 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 075 NM EAST SEMICIRCLE
                            055 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM EAST SEMICIRCLE
                            105 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 300 DEG/ 09 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   040600Z0 --- 18.0N9 137.2E3
   MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 070 NM NORTHEAST SEMICIRCLE
                            050 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            105 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 310 DEG/ 08 KTS
    ---
   72 HRS, VALID AT:
   050600Z1 --- 19.9N9 134.7E5
   MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 070 NM NORTHEAST SEMICIRCLE
                            050 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            105 NM ELSEWHERE
    ---
REMARKS:
020900Z1 POSITION 14.7N2  145.2E2
SUPER TYPHOON KEITH (29W) IS MOVING WEST-NORTHWESTWARD AT
15 KNOTS. WIND RADII HAVE BEEN LARGELY ADJUSTED BASED ON
DOPPLER RADAR WIND DEPICTION AND SYNOPTIC DATA.
SUBSTANTIAL WINDS ARE EXPECTED TO CONTINUE AFTER TIME OF
CPA AS LOW-LEVEL INFLOW IS SIGNIFICANT IN THE SOUTH AND
SOUTHEAST QUADRANTS. THERE ARE NO OTHER SIGNIFICANT
CHANGES FROM THE PREVIOUS FORECAST. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 020600Z IS 45 FEET. REFER TO WWPW30 PGFW
FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT
021500Z8 (DTG 021353Z4), 022100Z5 (DTG 021953Z0),
030300Z6 (DTG 030153Z2) AND 030900Z2 (DTG 030753Z8).
REFER TO TROPICAL STORM LINDA (30W) WARNINGS (WTPN32
PGTW) FOR SIX-HOURLY UPDATES.//

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