Tropical Storm Warning issued October 3 at 3:33AM ChST…

Tropical Storm Warning issued October 3 at 3:33AM ChST by NWS Tiyan GU, United States of America

Event time: Oct 2, 2026 17:33 UTC 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.

...CHOI-WAN UPGRADED TO TYPHOON TO THE WEST OF PAGAN, MOVING
NORTH...
...TYPHOON WARNING NOW IN EFFECT FOR ALAMAGAN IN THE CNMI...

.NEW INFORMATION...
Choi-wan (26W) was upgraded to a typhoon.

A Typhoon Warning is now in effect for Alamagan 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 Typhoon Warning is now in effect for Alamagan in the CNMI.

A Typhoon Warning remains in effect for Agrihan and Pagan in the
CNMI.

A Tropical Storm Warning remains in effect for Tinian and Saipan
in the CNMI.

A Typhoon Warning means that typhoon conditions are expected,
including winds of 74 mph or more, with tropical storm force winds
beginning within 24 hours.
A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, 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 AM ChST, the center of Typhoon Choi-wan (26W) was located
near latitude 18.0N, longitude 144.7E. This was about 70 miles
west of Pagan, 210 miles north-northwest of Saipan, and 310 miles
north of Guam. Storm motion was north, 360 degrees, at 9 mph.
Storm intensity was 80 mph.

.SITUATION OVERVIEW...
Typhoon Choi-wan has begun to intensify more rapidly, and the
typhoon force wind field has quickly come to encompass Alamagan
and Pagan, as the latest forecast has expanded typhoon winds
southward. So, a Typhoon Warning was issued for Alamagan,
maintaining the Typhoon Warnings in effect for Pagan and Agrihan.
Choi-wan is expected to make a slight turn toward the north-
northeast this morning with little change in forward speed
through Sunday, passing nea

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	2026-10-03T11:45:00+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 17:35 UTC) · we last heard from WMO Alert Hub (national weather services) 7 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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