Subject: Pacific-NW: Subj/significant Tropical Weather Advisory For The

From: SIU Weather Processor <[email-masked]>
Date: Thu, 30 Oct 1997 20:23:15 -0600

369
ABPW10 PGTW 310030
MSGID/GENADMIN/NAVPACMETOCCEN WEST GU//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE
WESTERN PACIFIC OCEAN/310030Z/310600Z OCT 97//
REF/A/RMG/NAVPACMETOCCEN WEST GU/301953ZOCT97//
NARR/REF A, TYPHOON KEITH (29W) WARNING
NR 13 (WTPN31 PGTW 302100)//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
     (1) AT 301800Z2 TYPHOON KEITH (29W) WAS
LOCATED AT 08.6N4 158.2E6 AND MOVING WEST-NORTHWEST AT 13
KNOTS. MAXIMUM SUSTAINED WINDS WERE ESTIMATED AT 90 KNOTS
WITH GUSTS TO 110 KNOTS. SEE REF A (TYPHOON KEITH
(29W) WARNING NR 13(WTPN31 PGTW 302100)) AND 6 HOURLY
UPDATES FOR FURTHER DETAILS.
     (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
     (1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR
10N1 129E2 ON 29 OCT HAS MOVED THROUGH THE SOUTHERN
PHILLIPINE ISLANDS AND IS NOW LOCATED NEAR 9N9 120E3 IN
THE SULU SEA. A WEAK LOW-LEVEL CIRCULATION CENTER IS
APPARENT IN BOTH THE SURROUNDING SYNOPTIC DATA AND IN THE
ANIMATED INFRARED IMAGERY. ALTHOUGH CONVECTION IS NOT
ORGANIZED AT THIS TIME, BOTH WATER VAPOR IMAGERY AND THE
UPPER LEVEL WINDS DERIVED FROM THIS IMAGERY SHOW AN UPPER
LEVEL ANTICYCLONE OVER MINDANAO ISLAND WHICH IS HELPING
TO WEAKEN THE PREVIOUS STRONG VERTICAL SHEAR OVER THIS
AREA. MAXIMUM SUSTAINED WINDS ARE ESTIMATED BETWEEN 10
AND 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO
BE 1008 MB. THE POTENTIAL FOR SIGNIFICANT TROPICAL
CYCLONE DEVELOPMENT WITHIN THE NEXT 24 HOURS IS FAIR.
     (2) NO OTHER SUSPECT AREAS.
2. WESTERN SOUTH PACIFIC AREA (180 WEST TO 135E):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
3. JUSTIFICATION: THIS BULLETIN REISSUED TO ADD AREA IN
SECTION 1.B (1).
FORECAST TEAM: EDSON/HILDEBRAND/SANCHEZ/HALL//

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