Tropical Storm Warning issued October 3 at 3:23PM ChST…

Tropical Storm Warning issued October 3 at 3:23PM ChST by NWS Tiyan GU, United States of America

Event time: Oct 3, 2026 05:23 UTC Last updated: Oct 12, 2026 United States

Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

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...TYPHOON CHOI-WAN MOVING NORTHEAST AND AWAY FROM AGRIHAN...

.NEW INFORMATION...
None.

.AREAS AFFECTED...
This local statement provides information and recommended actions
for people on Saipan, Tinian, Agrihan, Pagan and Alamagan in the
Commonwealth of the Northern Marianas.

.WATCHES/WARNINGS...
A Typhoon Warning remains in effect for Alamagan, Agrihan and Pagan
in the CNMI.
A Tropical Storm Warning remains in effect for Tinian and Saipan and
their adjacent waters in the CNMI.

A Flood Watch remains in effect for all of Guam and 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 Choi-wan (26W) was located near
latitude 19.0N and longitude 145.5E. This was about 20 miles north-
northwest of Agrihan, and about 270 miles north of Saipan. Storm
motion was northeast, 35 degrees, at 7 mph with maximum sustained
winds of 100 mph, becoming a Category 2 typhoon. Choi-wan is expected
to make a slight turn toward the north-northeast with a slight
increase in forward speed through Sunday, moving away from the
Marianas. Choi-wan is forecast to intensify further through tonight,
becoming a Category 3 typhoon tonight.

.SITUATION OVERVIEW...
Typhoon Choi-wan continues to intensify, and is expected to become a
Category 3 typhoon tonight as it continues moving away from the
Marianas and passing near Maug to the northeast. A Typhoon Warning
remains in effect for Alamagan, Pagan and Agrihan. Due to the
enhancement of the monsoon surge along the southern peripheries of
Choi-wan, TS conditions are still expected at Tinian, Saipan and
their adjacent waters in the early evening hours tonight, but then
becoming more likely to fall below TS conditions as the night goes
on.

Measurements

Coordinates	39.9645, -100.8105
Region	Tinian; Saipan
Location Precision	country
Issuing Authority	United States of America — us-noaa-nws-en
Cap Urgency	Immediate
Cap Certainty	Likely
Cap Expires	2026-10-03T21:00:00+10:00

Official source

Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by WMO Alert Hub (national weather services).

View original report

This event as JSON · API and licence

Source updated 16 days ago (Oct 3, 2026 05:24 UTC) · we last heard from WMO Alert Hub (national weather services) 51 seconds ago

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About this location

The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.

Area as the agency stated it: Tinian; Saipan

Official authorities in United States

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