Subject: Pacific-NW: Marine Warning -280324 (AUTOMATIC)

From: Charley Kline <[email-masked]>
Date: Sat, 28 Sep 1996 03:24:26 -0500

ZCZC DD+ 64037
WTPN31 PGTW 280900
1. TYPHOON YATES (28W) WARNING NR 023
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   280600Z6 --- 21.4N7 138.2E4
     MOVEMENT PAST SIX HOURS - 315 DEGREES AT 05 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON EYE FIXED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 060 NM
   RADIUS OF 035 KT WINDS - 150 NM SOUTHEAST SEMICIRCLE
                            110 NM ELSEWHERE
   REPEAT POSIT: 21.4N7 138.2E4
    ---
   FORECASTS:
   12 HRS, VALID AT:
   281800Z9 --- 22.4N8 137.7E8
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 060 NM
   RADIUS OF 035 KT WINDS - 155 NM SOUTHEAST SEMICIRCLE
                            110 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 355 DEG/ 08 KTS
    ---
   24 HRS, VALID AT:
   290600Z7 --- 24.0N6 137.5E6
   MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
   RADIUS OF 100 KT WINDS - 020 NM
   RADIUS OF 050 KT WINDS - 060 NM
   RADIUS OF 035 KT WINDS - 160 NM EAST SEMICIRCLE
                            110 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 015 DEG/ 12 KTS
    ---
   36 HRS, VALID AT:
   291800Z0 --- 26.3N1 138.1E3
   MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
   RADIUS OF 050 KT WINDS - 055 NM
   RADIUS OF 035 KT WINDS - 160 NM EAST SEMICIRCLE
                            100 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 040 DEG/ 14 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   300600Z9 --- 28.4N4 140.1E6
   MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT
   RADIUS OF 050 KT WINDS - 055 NM
   RADIUS OF 035 KT WINDS - 155 NM SOUTHEAST SEMICIRCLE
                            095 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 055 DEG/ 20 KTS
    ---
   72 HRS, VALID AT:
   010600Z7 --- 33.0N6 147.6E8
   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 055 NM SOUTHEAST SEMICIRCLE
                            035 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 135 NM SOUTHEAST SEMICIRCLE
                            080 NM ELSEWHERE
    ---
REMARKS:
280900Z9 POSITION 21.7N0  138.1E3
TYPHOON YATES (29W) IS MOVING NORTHWESTWARD AT 05 KNOTS.
IT HAS MAINTAINED INTENSITY OVER THE PAST SIX HOURS AND
IS ANTICIPATED TO REMAIN NEAR THIS INTENSITY THROUGH
DIURNAL CONVECTIVE MAXIMUM, AS IT HAS EITHER REMAINED AT
INTENSITY, OR INTENSIFIED, NIGHTLY DURING DIURNAL
CONVECTIVE MAXIMUM FOR THE PAST SEVERAL DAYS. IT IS
FORECAST TO CONTINUE SLOWLY MOVING NORTHWESTWARD, BEING
IMPEDED IN FORWARD MOTION BY THE SUBTROPICAL RIDGE AXIS
TO ITS NORTHEAST AND THE INDUCED ANTICYCLONE OF TY ZANE
(29W) TO ITS WEST. ANIMATED VISIBLE, INFRARED, AND WATER
VAPOR IMAGERY INDICATE THE SUBTROPICAL RIDGE AXIS IS
BECOMING PINCHED OFF AND A SIGNIFICANT BREAK IN THE RIDGE
AXIS IS DEVELOPING NORTH OF TY YATES. THIS SHOULD ALLOW
YATES TO MOVE NORTH OF THE RIDGE WITHIN THE NEXT 36 HOURS
AND START TO ACCELERATE TO THE NORTHEAST BY 48 HOURS. DUE
TO THE STRONG MIDLATITUDE UPPER-LEVEL WESTERLIES THIS
SYSTEM IS FORECAST TO BEGIN EXTRATROPICAL TRANSITION
SOMETIME BETWEEN 48 AND 72 HOURS. NEXT WARNINGS AT
281500Z6 (DTG 281351Z0), 282100Z3 (DTG 281951Z6),
290300Z4 (DTG 290151Z8) AND 290900Z0 (DTG 290751Z4).
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280600Z6 IS 24 FEET.
REFER TO WWPW30 PGFW FOR ADDITIONAL SEA HEIGHT
INFORMATION. REFER TO TYPHOON ZANE (29W) WARNINGS (WTPN32
PGTW) FOR SIX-HOURLY UPDATES.//

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