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Date:	Sun, 16 Nov 1997 01:59:07 -0600
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Sender: WX-TROPL Tropical Storm and Hurricane WX products <[email-masked]>
From:	SIU Weather Processor <[email-masked]>
Subject:      Pacific-NW: 1. Tropical Depression 31w (mort) Warning Nr 023
To:	Multiple recipients of list WX-TROPL <[email-masked]>
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892
WTPN31 PGTW 160900
1. TROPICAL DEPRESSION 31W (MORT) WARNING NR 023
DOWNGRADED FROM TROPICAL STORM 31W
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
---
WARNING POSITION:
160600Z3 --- 15.6N2 121.8E2
MOVEMENT PAST SIX HOURS - 295 DEGREES AT 07 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
SATELLITE AND SYNOPTIC DATA
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
REPEAT POSIT: 15.6N2 121.8E2
---
FORECASTS:
12 HRS, VALID AT:
161800Z6 --- 16.1N8 120.5E8
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
160900Z6 POSITION 15.7N3  121.5E9
TROPICAL STORM MORT HAS RAPIDLY WEAKENED DURING THE PAST
06 HOURS WHILE TRACKING WEST-NORTHWESTWARD TOWARD BALER
ALONG THE EAST CENTRAL COAST OF LUZON. AS A RESULT, THIS
SYSTEM HAS BEEN DOWNGRADED TO TROPICAL DEPRESSION 31W
(MORT). THE WARNING INTENSITY IS BASED ON SATELLITE
INTENSITY ESTIMATES OF 25 TO 30 KNOTS AND 160300Z0
SYNOPTIC DATA. TD 31W IS EXPERIENCING CONSIDERABLE
VERTICAL WIND SHEAR, DRY AIR ENTRAINMENT, AND LAND
INTERACTION. THESE UNFAVORABLE CONDITIONS WILL CONTINUE
TO WEAKEN THIS SYSTEM AND CAUSE IT TO DISSIPATE WITHIN
THE NEXT 12 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT
160600Z3 IS 08 FEET. REFER TO WWPW30 PGFW FOR ADDITIONAL
SEA HEIGHT INFORMATION. THIS IS THE FINAL WARNING ON THIS
SYSTEM BY THE JOINT TYPHOON WARNING CENTER NAVPACMETOCCEN
WEST GU). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS
OF REGENERATION SHOULD THE LOW-LEVEL CIRCULATION CENTER
RE-EMERGE TO THE WEST OF LUZON OVER THE SOUTH CHINA
SEA.//

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