Tropical Storm Watch issued October 1 at 4:25AM ChST…

Tropical Storm Watch issued October 1 at 4:25AM ChST by NWS Tiyan GU, United States of America

Event time: Sep 30, 2026 18:25 UTC Last updated: Oct 9, 2026 United States

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

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...26W UPGRADED TO TROPICAL STORM AS IT APPROACHES THE NORTHERN
CNMI...
...TROPICAL STORM WARNING NOW IN EFFECT FOR ALAMAGAN AND PAGAN...
...TYPHOON WATCH NOW IN EFFECT FOR ALAMAGAN AND PAGAN...

.NEW INFORMATION...
26W has been upgraded to a Tropical Storm.
A Tropical Storm Warning is now in effect for Alamagan and Pagan
in the CNMI.
A Typhoon Watch is now in effect for Alamagan and Pagan.
A Tropical Storm Watch remains in effect for Tinian, Saipan, and
Agrihan in the CNMI.

.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 Tropical Storm Warning is now in effect for Alamagan and Pagan
in the CNMI.

A Typhoon Watch is now in effect for Alamagan and Pagan.

A Tropical Storm Watch remains in effect for Tinian, Saipan, and
adjacent coastal waters.

A Tropical Storm Watch remains in effect for Agrihan in the CNMI.

A Typhoon Watch means that typhoon conditions, including winds of
74 mph or more, are possible within 48 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the next 48 hours somewhere within the specified
areas.

A Tropical Storm Warning means that tropical storm conditions are
expected within 24 hours.

All persons in the watch areas should review their preparedness
plan and begin to take actions to prepare for conditions as
indicated by your local forecast and additional details, below,
for your island.

.STORM INFORMATION...
At 3 AM ChST, the center of Tropical Storm 26W was located near
latitude 16.1N, longitude 150.5E. This was about 325 miles east-
northeast of Saipan, 325 miles east-southeast of Alamagan, and
420 miles east-northeast of Guam. Storm motion was west-
northwest, 285 degrees, at 5 mph. Storm intensity was 40 mph. The
current forecast track reflects an intensifying 26W will move
into the CNMI on Friday, curving north-northeast as it nears
Alam

Measurements

Coordinates	39.9645, -100.8105
Region	Tinian; Saipan
Location Precision	country
Issuing Authority	United States of America — us-noaa-nws-en
Cap Urgency	Future
Cap Certainty	Possible
Cap Expires	2026-10-01T12:30:00+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 19 days ago (Sep 30, 2026 18:26 UTC) · we last heard from WMO Alert Hub (national weather services) 55 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

If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.

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What to do

Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.

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