Subject: Pacific-NW: Marine Warning -300311 (AUTOMATIC)

From: Charley Kline <[email-masked]>
Date: Mon, 30 Sep 1996 03:11:56 -0500

ZCZC DD+ 48006
WTPN32 PGTW 300900
1. TYPHOON ZANE (29W) WARNING NR 026
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   300600Z9 --- 27.2N1 129.2E4
     MOVEMENT PAST SIX HOURS - 090 DEGREES AT 10 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON EYE FIXED BY A COMBINATION OF
     SATELLITE, RADAR AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
   RADIUS OF 050 KT WINDS - 090 NM SOUTH SEMICIRCLE
                                   OVER WATER
                            080 NM ELSEWHERE OVER WATER
   RADIUS OF 035 KT WINDS - 140 NM SOUTH SEMICIRCLE
                                   OVER WATER
                            105 NM ELSEWHERE OVER WATER
   REPEAT POSIT: 27.2N1 129.2E4
    ---
   FORECASTS:
   12 HRS, VALID AT:
   301800Z2 --- 27.2N1 131.9E4
   MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
   RADIUS OF 050 KT WINDS - 085 NM SOUTH SEMICIRCLE
                                   OVER WATER
                            075 NM ELSEWHERE OVER WATER
   RADIUS OF 035 KT WINDS - 140 NM SOUTH SEMICIRCLE
                                   OVER WATER
                            105 NM ELSEWHERE OVER WATER
   VECTOR TO 24 HR POSIT: 085 DEG/ 13 KTS
    ---
   24 HRS, VALID AT:
   010600Z7 --- 27.5N4 134.9E7
   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
   RADIUS OF 050 KT WINDS - 070 NM SOUTH SEMICIRCLE
                            050 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 130 NM SOUTH SEMICIRCLE
                            095 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 080 DEG/ 15 KTS
    ---
   36 HRS, VALID AT:
   011800Z0 --- 28.1N1 138.2E4
   MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 040 NM SOUTH SEMICIRCLE
                            030 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 100 NM SOUTH SEMICIRCLE
                            060 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 070 DEG/ 15 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   020600Z8 --- 29.0N1 141.4E0
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 035 KT WINDS - 080 NM SOUTH SEMICIRCLE
                            040 NM ELSEWHERE
   VECTOR TO 72 HR POSIT: 070 DEG/ 15 KTS
    ---
   72 HRS, VALID AT:
   030600Z9 --- 30.9N2 147.9E1
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   EXTRATROPICAL
    ---
REMARKS:
300900Z2 POSITION 27.2N1  129.9E1
TYPHOON ZANE (29W) IS MOVING EASTWARD AT 10 KNOTS THROUGH
THE RYUKYU ISLANDS, AND HAS JUST CROSSED YORON ISLAND
(WMO 479425; RORY). DURING EYE PASSAGE YORON HAD A
MINIMUM CENTRAL PRESSURE OF 960.1 MB, WHICH EQUATES TO 83
KNOT SUSTAINED 1-MINUTE WINDS OVER THE OPEN OCEAN.
ANIMATED SATELLITE IMAGERY AND RADAR DATA INDICATE THAT
TY ZANE UNDERWENT A RAPID WEAKENING DURING THE PREVIOUS
SIX HOUR PERIOD BUT HAS MAINTAINED INTENSITY THESE PAST
SIX HOURS. AFTER THE EYE APPEARED TO WASH OUT IN BOTH
RADAR DATA AND SATELLITE IMAGERY, IT HAS REFORMED AS A
SPIRAL BANDED EYE OF APPROXIMATELY 8 NM IN DIAMETER. OUR
WARNING INTENSITY IS BASED UPON A COMBINATION OF SYNOPTIC
DATA AND SATELLITE IMAGERY ANALYSIS INDICATING WINDS OF
90 KNOTS OR LESS (DVORAK CI 5.0). WIND RADII ARE BASED ON
A 30/0345Z MICROWAVE SATELLITE IMAGERY (SSM/I) ANAL
PROVIDED BY KGWC AND AVAILABLE SYNOPTIC DATA. DATA FROM
NUMEROUS ISLANDS AROUND THE CIRCULATION DO A GOOD JOB OF
IDENTIFYING THE GALE WIND AND 50 KNOT RADII. NEXT
WARNINGS AT 301500Z9 (DTG 301353Z5), 302100Z6 (DTG
301953Z1), 010300Z4 (DTG 010153Z0) AND 010900Z0 (DTG
010753Z6). MAXIMUM SIGNIFICANT WAVE HEIGHT AT 300600Z9 IS
20 FEET. REFER TO WWPW30 PGFW FOR ADDITIONAL SEA HEIGHT
INFORMATION. REFER TO TYPHOON YATES (28W) WARNINGS
(WTPN31 PGTW) FOR SIX-HOURLY UPDATES.//

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