WTPQ81 PGUM 172307
HLSPQ1

URGENT - IMMEDIATE BROADCAST REQUESTED
TROPICAL CYCLONE LOCAL STATEMENT
NATIONAL WEATHER SERVICE TIYAN GU
907 AM ChST Sat Apr 18 2026

...TYPHOON SINLAKU MOVING NORTHEAST AWAY FROM THE FAR NORTHERN
MARIANAS...

.NEW INFORMATION...
None.

.AREAS AFFECTED...
This local statement provides information and recommended action
for people on Agrihan in the Commonwealth of the Northern Marianas.

.WATCHES/WARNINGS...
A Typhoon Warning remains in effect for Agrihan in the CNMI.

.STORM INFORMATION...
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was
located near Latitude 21.8 degrees North and Longitude
146.7 degrees East. Sinlaku is moving northeast at 7 mph. It is
expected to maintain this general course with an increase in
forward speed through Sunday. 

.SITUATION OVERVIEW...
The latest forecast track and intensity, and overnight satellite 
scatterometry keep Agrihan on the very outer edge of tropical storm 
conditions, but a combination of Sinlaku weakening and moving away 
should allow for sustained winds of 39 mph or greater to end within 
the next hour or two. Maximum sustained winds have decreased to 80 
mph. Sinlaku is forecasted to continue to weaken over the next
couple of days, possibly becoming extratropical Sunday.

.PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay indoors during heavy rain and windy conditions associated with 
Typhoon Sinlaku (04W). Remain in a sturdy shelter until the "all 
clear" is given. Heed the advice of your local emergency managers and
officials, and continue to monitor forecasts by your local National 
Weather Service office in Tiyan, Guam.

.NEXT UPDATE...
The next local statement will be issued by the National Weather
Service in Tiyan around at 3 PM ChST this afternoon, or sooner, if 
conditions warrant. 

...AGRIHAN...

...A TYPHOON WARNING REMAINS IN EFFECT FOR AGRIHAN...

.PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay indoors during heavy rain and windy conditions associated with 
Typhoon Sinlaku (04W). Remain in a sturdy shelter until the "all 
clear" is given. Heed the advice of your local emergency managers and
officials, and continue to monitor forecasts by your local National 
Weather Service office in Tiyan, Guam.

.WIND INFORMATION...
West tropical storm force winds of 35 to 45 mph with gusts to 55 mph
are diminishing as Sinlaku moves northeast. Winds will decrease to 
25 to 35 mph with gusts to 45 mph later this morning. Winds will 
continue to decrease as Sinlaku moves farther northeast.

.COASTAL INUNDATION AND SURF INFORMATION...
Seas of 10 to 20 feet will be possible, with dangerous surf, 
significant coastal inundation and beach erosion. Inundation of 3 to 
5 feet is possible, especially along south, west, and north facing 
shorelines.

.OTHER STORM EFFECTS...
Heavy, intense rainfall with TY Sinlaku has shifted to the north and
showers will continue to decrease this morning, bringing additional 
rainfall amounts of 0.5 to 1.5 inches today.

$$