Headline:
Tropical Cyclone Statement issued April 16 at 3:42PM ChST until April 16 at 7:00PM ChST by NWS Tiyan GU
Event:
Tropical Cyclone Statement
Urgency:
Expected
Effective:
April 15, 2026 - 10:42pm
Expires:
April 16, 2026 - 2:00am
Description:
...TYPHOON SINLAKU MOVING SLOWLY NORTH THROUGH THE NORTHERN
CNMI...
.NEW INFORMATION...
A Tropical Storm Warning and Typhoon Watch have been cancelled for
the island of Guam and adjacent coastal waters.
.AREAS AFFECTED...
This local statement provides important information and
recommended actions for people in Guam and the Northern Marianas.
.WATCHES/WARNINGS...
A Typhoon Warning continues for Rota, Tinian, and Saipan.
Although tropical cyclone watches or warnings are no longer in
effect for Guam, possible impacts from related hazards are still a
concern.
A Flood Watch is in effect for portions of the Northern Marianas.
Please listen closely for any Flood Warnings that might be in
effect for your area.
Please check the latest public and marine forecasts for detailed
information about additional hazards.
.STORM INFORMATION...
At 2 PM ChST...the center of Typhoon Sinlaku (04W) was located
near latitude 17.4N...longitude 144.5E. This was about 90 miles
west of Alamagan, 95 miles west-southwest of Pagan, 120 miles
southwest of Agrihan, 175 miles north-northwest of Saipan and
Tinian, and 270 miles north of Guam. Storm motion was north, 355
degrees, at 4 mph. Storm intensity was 115 mph.
.SITUATION OVERVIEW...
The eye of Typhoon Sinlaku (04W) is moving slowly north and the
eye is well north-northwest of Tinian and Saipan. Latest satellite
imagery indicates that the storm center has just begun to shift
toward the north-northeast. Typhoon Sinlaku has been slow to move
out, and the TS wind field has expanded since earlier this
morning. This kept the northern coastal waters of Guam just within
the tropical storm force winds until just earlier this afternoon,
and Saipan and Tinian are now just outside of the outer edge of
the destructive tropical storm winds. Typhoon Sinlaku is now
moving through the northern CNMI just west of Alamagan, Pagan, and
Agrihan. As Sinlaku moves through the northern CNMI today and
tonight, it is forecast to curve further to the northeast, passing
north of Agrihan Friday.
Typhoon Sinlaku is now centered 270 miles north of Guam and
continues to pull away to the north. Guam and the adjacent
coastal waters are now fully outside of the tropical storm force
wind field, but tropical storm force gusts to around 45 mph look
to continue into this evening, with even higher gusts possible
near any passing shower. Dangerous surf of 12 to 17 feet are
still occurring across south, west, and north facing reefs of
Guam, driven by the southwesterly winds. The threat of coastal
inundation is starting to diminish this afternoon, but minor
coastal flooding of up to 2 feet will remain possible into the
weekend along south, west, and north facing reefs of Guam, mainly
along west facing shores and beaches due to the wind driven waves.
Surf will be slow to decrease over the next few days as swell
from Sinlaku continues to pummel northern and western Marianas
shores.
Instruction:
.
For those under a warning in Rota, Tinian, and Saipan, remain in
a designated shelter or in a sturdy, fully reinforced concrete
building to ride out the storm until winds have subsided and the
"all clear" is given.
Stay inside and away from windows. Do not venture outside when
high winds are occurring as flying debris can easily cause serious
injury.
For those under a warning in the far northern Mariana Islands of
Alamagan, Pagan, and Agrihan, preparations for the protection of life
and property should have already been completed. People should be in
a designated hardened shelter. Remain in shelter until the "all
clear" is given.
Closely monitor NOAA weather radio or other local news outlets for
official storm information. Listen for possible changes to the
forecast.
Area Description:
Guam
Forcast Office:
NWS Tiyan GU
Sender: