Severe Hurricane / Cyclone / Typhoon ● Closed

Tropical Storm Warning issued October 2 at 2:54PM ChST by NWS Tiyan GU, United States of America

Event time: Last updated: Oct 11, 2026 United States
Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

...TROPICAL STORM CHOI-WAN SLOWLY MOVING WEST-NORTHWEST AND INCHING
CLOSER TO ALAMAGAN...

.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 Tropical Storm Warning remains in effect for Saipan, Tinian and
their adjacent coastal waters, as well as Alamagan, Pagan, and
Agrihan in the CNMI. A Typhoon Watch remains in effect for Alamagan,
Pagan, and 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 Warning means that tropical storm conditions are
expected within 24 hours.

A Flood Watch remains in effect for Tinian and Saipan. Please listen
closely for any Flash 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 1 PM ChST, the center of Tropical Storm Choi-wan (26W) was
located near latitude 17.2N and longitude 144.7E. This was about 260
miles north of Guam. Choi-wan is moving west-northwest at 5 mph, slowing
down before pivoting toward the north-northeast with little change
in forward speed through Saturday as it moves up the Far Northern
Marianas. Maximum sustained winds have increased to 65 mph. Choi-wan
is forecast to intensify through tonight, possibly becoming a
typhoon later today. Tropical storm force winds continue to extend
outward from the center up to 125 miles, however, the wind field is
expected to expand farther south over the next few hours.

.SITUATION OVERVIEW...
Tropical Storm Choi-wan continues to move away from Anatahan and is
inching closer to Alamagan, pivoting slowly to the north-northeast
through Saturday. During this time, the wind field will continue to
expand, exposing Tinian and Saipan in Tropical Storm condition a
little lon

Measurements

Coordinates39.9645, -100.8105
RegionTinian; Saipan
Location Precisioncountry
Issuing AuthorityUnited States of America — us-noaa-nws-en
Cap UrgencyImmediate
Cap CertaintyLikely
Cap Expires2026-10-02T21:00:00+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 17 days ago (Oct 2, 2026 04:55 UTC) · we last heard from WMO Alert Hub (national weather services) 45 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

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Earlier hurricane / cyclone / typhoon events in United States

Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.

Tropical Storm Warning — Southern Calcasieu Severe Hurricane / Cyclone / Typhoon United States closed via NWS Sep 1, 2026 Tropical Storm Warning — East Cameron Severe Hurricane / Cyclone / Typhoon United States closed via NWS Sep 1, 2026 Tropical Storm Warning — Southern Newton Severe Hurricane / Cyclone / Typhoon United States closed via NWS Sep 1, 2026 Tropical Storm Warning — Lower Jefferson Severe Hurricane / Cyclone / Typhoon United States closed via NWS Sep 1, 2026

Nearby & related events

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Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.