Subject: Pacific-NW: [182100]

From: SIU Weather Processor <[email-masked]>
Date: Fri, 18 Jul 1997 15:45:46 -0500

885
WTPN31 PGTW 182100
THIS WARNING SUPERSEDES AND CANCELS NAVPACMETOCCEN WEST

PAGE 02 RUHGSGG8307 UNCLAS
GU 181351Z JUL 97
TROPICAL CYCLONE FORMATION ALERT (WTPN21 PGTW 181300 )
1. TROPICAL DEPRESSION 10W WARNING NR 001
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   181800Z8 --- 10.0N1 137.1E2
     MOVEMENT PAST SIX HOURS - 295 DEGREES AT 02 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   REPEAT POSIT: 10.0N1 137.1E2
    ---
   FORECASTS:
   12 HRS, VALID AT:
   190600Z6 --- 10.2N3 136.8E8
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   VECTOR TO 24 HR POSIT: 325 DEG/ 02 KTS

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    ---
   24 HRS, VALID AT:
   191800Z9 --- 10.5N6 136.6E6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 36 HR POSIT: 335 DEG/ 02 KTS
    ---
   36 HRS, VALID AT:
   200600Z8 --- 10.9N0 136.4E4
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE
                            045 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 340 DEG/ 03 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   201800Z1 --- 11.4N6 136.2E2
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 060 NM NORTHEAST SEMICIRCLE
                            050 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 340 DEG/ 03 KTS

PAGE 04 RUHGSGG8307 UNCLAS
    ---
   72 HRS, VALID AT:
   211800Z2 --- 12.4N7 135.8E7
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 075 NM NORTHEAST SEMICIRCLE
                            065 NM ELSEWHERE
    ---
REMARKS:
182100Z2 POSITION 10.0N1  137.0E1
TROPICAL DEPRESSION 10W IS MOVING WEST-NORTHWESTWARD AT
02 KNOTS. THE WARNING POSITION AND INTENSITY ARE BASED ON
171730Z INFRARED SATELLITE DATA. TROPICAL DEPRESSION 10W
IS FORECAST TO SLOWLY MOVE TOWARD THE NORTH-NORTHWEST
THROUGH THE FORECAST PERIOD. IT WILL REMAIN IN WEAK
STEERING FLOW BETWEEN THE SUBTROPICAL RIDGE TO THE NORTH
AND WEST WINDS NEAR THE EQUATOR. THIS SYSTEM IS FORECAST
TO INTENSIFY AT LESS THAN A CLIMATOLOGICAL RATE DUE TO
ITS LARGER THAN AVERAGE SIZE. FORECAST WIND RADII ARE
BASED ON CLIMATOLOGY FOR A LARGER THAN AVERAGE TROPICAL
CYCLONE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 181800Z IS 09

PAGE 05 RUHGSGG8307 UNCLAS
FEET. REFER TO WWPW31 PGFW FOR ADDITIONAL SEA HEIGHT
INFORMATION. NEXT WARNINGS AT 190300Z3 (DTG 190151Z7),
190900Z9 (DTG 190751Z3), 191500Z6 (DTG 191351Z0) AND
192100Z3 (DTG 191951Z6). THIS WARNING SUPERSEDES AND
CANCELS NAVPACMETOCCEN WEST GU 181351Z JUL 97 TROPICAL
CYCLONE FORMATION ALERT (WTPN21 PGTW 181300).//
BT
#8307

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