Subject: Pacific-NW: 1. Tropical Storm Ivan (27w) Warning Nr 045

From: SIU Weather Processor <[email-masked]>
Date: Fri, 24 Oct 1997 02:13:22 -0500

101
WTPN31 PGTW 240900
1. TROPICAL STORM IVAN (27W) WARNING NR 045
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   240600Z2 --- 26.9N7 135.2E1
     MOVEMENT PAST SIX HOURS - 055 DEGREES AT 13 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 035 KT WINDS - 210 NM SOUTHEAST SEMICIRCLE
                            170 NM ELSEWHERE
   REPEAT POSIT: 26.9N7 135.2E1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   241800Z5 --- 28.3N3 137.9E0
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 035 KT WINDS - 200 NM SOUTHEAST SEMICIRCLE
                                   OVER WATER
                            160 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 070 DEG/ 16 KTS
    ---
   24 HRS, VALID AT:
   250600Z3 --- 29.5N6 141.4E0
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   EXTRATROPICAL
   VECTOR TO 36 HR POSIT: 070 DEG/ 17 KTS
    ---
   36 HRS, VALID AT:
   251800Z6 --- 30.6N9 145.0E0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   EXTRATROPICAL
   VECTOR TO 48 HR POSIT: 070 DEG/ 18 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   260600Z4 --- 31.7N1 149.0E4
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   EXTRATROPICAL
   VECTOR TO 54 HR POSIT: 070 DEG/ 20 KTS
    ---
   54 HRS, VALID AT:
   261200Z1 --- 32.3N8 151.3E0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   EXTRATROPICAL
    ---
REMARKS:
240900Z5 POSITION 27.2N1  135.9E8
TROPICAL STORM IVAN (27W) IS MOVING NORTHEASTWARD AT 13
KNOTS. THERE IS NO SIGNIFICANT CHANGE IN FORECAST
REASONING. THIS SYSTEM IS EXPECTED TO MOVE GENERALLY
EAST-NORTHEASTWARD THROUGH 54 HOURS AS IT ACCELERATES
GRADUALLY AND SLOWLY WEAKENS. EXTRATROPICAL TRANSITION
HAS BEGUN AND IS EXPECTED TO BE COMPLETE WITHIN 24 HOURS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 240600Z IS 20 FEET.
REFER TO WWPW30 PGFW FOR ADDITIONAL SEA HEIGHT
INFORMATION. NEXT WARNINGS AT 241500Z2 (DTG 241351Z6),
242100Z9 (DTG 241951Z2), 250300Z0 (DTG 250151Z4) AND
250900Z6 (DTG 250751Z0).//

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