Extreme Hurricane / Cyclone / Typhoon ● Active
Typhoon Warning issued October 18 at 12:31PM ChST by NWS Tiyan GU, United States of America
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* WHAT...Typhoon conditions, including winds of 64 knots or more will
continue for Guam. Tropical storm conditions will continue for
Rota.
* WHERE...Guam and Rota Coastal Waters.
* WHEN...Destructive typhoon force winds are occurring in western
waters of Guam, but will decrease as Champi moves farther west away
from the Marianas. The eye of Champi is now well outside of the
coastal waters to the west. Damaging winds will continue through
today.
* IMPACTS...Destructive typhoon force and tropical storm force winds
will produce dangerous to deadly seas that could damage, capsize or
sink vessels, along with drastically reducing visibilities in heavy
rain.
* ADDITIONAL DETAILS...Super Typhoon Champi (29W) continues to move
quickly away from the Marianas as a Category 4 Super Typhoon. Seas
are expected to remain hazardous through tonight, with significant
sea heights as high as 24 feet over Guam coastal waters and 20
feet over Rota coastal waters. Dangerous sea conditions may
continue into Monday.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Guam Coastal Waters; Rota Coastal Waters |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en-marine |
| Cap Urgency | Immediate |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-19T02:45:00+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 reportThis event as JSON · API and licence
Source updated 1 day ago (Oct 18, 2026 02:32 UTC) · we last heard from WMO Alert Hub (national weather services) 49 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: Guam Coastal Waters; Rota Coastal Waters
Official authorities in United States
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Open Hurricane Safety Guide →Earlier hurricane / cyclone / typhoon events in United States
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