258
WTPQ31 PGUM 131001
TCPPQ1
BULLETIN
SUPER TYPHOON SINLAKU (04W) ADVISORY NUMBER 18
NATIONAL WEATHER SERVICE TIYAN GU WP042026
801 PM CHST MON APR 13 2026
..SUPER TYPHOON SINLAKU MOVING WEST-NORTHWEST TOWARD THE MARIANAS
CHANGES WITH THIS ADVISORY
--------------------------
NONE.
WATCHES AND WARNINGS
--------------------
A TYPHOON WARNING REMAINS IN EFFECT FOR ROTA, TINIAN, AND SAIPAN.
A TROPICAL STORM WARNING AND TYPHOON WATCH REMAIN IN EFFECT FOR
GUAM.
A TROPICAL STORM WARNING REMAINS IN EFFECT FOR PAGAN AND ALAMAGAN.
A TROPICAL STORM WATCH REMAINS IN EFFECT FOR AGRIHAN.
SUMMARY OF 800 PM CHST...1000 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.0N 147.7E
ABOUT 185 MILES EAST-SOUTHEAST OF ROTA
ABOUT 195 MILES SOUTHEAST OF TINIAN
ABOUT 195 MILES SOUTHEAST OF SAIPAN
ABOUT 200 MILES EAST OF GUAM
ABOUT 340 MILES SOUTH-SOUTHEAST OF ALAMAGAN
ABOUT 375 MILES SOUTH-SOUTHEAST OF PAGAN
ABOUT 420 MILES SOUTH-SOUTHEAST OF AGRIHAN
MAXIMUM SUSTAINED WINDS...175 MPH
PRESENT MOVEMENT...WEST-NORTHWEST...305 DEGREES AT 8 MPH
DISCUSSION AND OUTLOOK
----------------------
AT 800 PM CHST...1000 UTC...THE CENTER OF SUPER TYPHOON SINLAKU WAS
LOCATED BY PGUA RADAR NEAR LATITUDE 13.0 DEGREES NORTH AND LONGITUDE
147.7 DEGREES EAST. SINLAKU IS MOVING WEST-NORTHWEST AT 8 MPH. IT IS
EXPECTED TO MAINTAIN THIS GENERAL COURSE WITH A SLIGHT DECREASE IN
FORWARD SPEED THROUGH TUESDAY. THE ONSET OF TROPICAL STORM FORCE
WINDS ARE EXPECTED TO OCCUR SHORTLY ACROSS GUAM, ROTA, TINIAN, AND
SAIPAN. TYPHOON FORCE WINDS ARE EXPECTED TO START REACHING ROTA,
TINIAN, AND SAIPAN LATE TUESDAY MORNING OR EARLY TUESDAY AFTERNOON.
LATEST JTWC FORECAST TRACK STILL MAINTAINS PASSAGE NEAR OR OVER
TINIAN AND SAIPAN.
MAXIMUM SUSTAINED WINDS HAVE DECREASED TO 175 MPH. SINLAKU IS
FORECAST TO WEAKEN THROUGH TUESDAY. SINLAKU IS FORECAST TO GRADUALLY
WEAKEN THROUGH THE NEXT SEVERAL DAYS, HOWEVER, IT IS STILL EXPECTED
TO CROSS THE MARIANAS NEAR OR OVER TINIAN AND SAIPAN AS A CATEGORY 4
OR CATEGORY 5 STORM.
TYPHOON FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO 80 MILES.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO 275
MILES TO THE NORTHEAST AND UP TO 215 MILES ELSEWHERE.
NEXT ADVISORY
-------------
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL WEATHER
SERVICE AT 1100 PM TONIGHT CHST FOLLOWED BY THE NEXT SCHEDULED
ADVISORY AT 200 AM CHST EARLY TUESDAY MORNING.
SCHANK
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