Severe · Typhoon WatchActive alert
Typhoon Watch issued October 16 at 12:25AM ChST by NWS Tiyan GU
Affecting Guam Coastal Waters; Rota Coastal Waters; Tinian Coastal Waters; Saipan Coastal Waters
In effect until: Oct 16, 2026, 6:00 AM
Guam Coastal Waters; Rota Coastal Waters; Tinian Coastal Waters; Saipan Coastal Waters
Possible impact zone; conditions develop through 6:00 AM.
Mariners should pay close attention to the marine forecast and consider wind and sea conditions in planning. Remain in port, seek safe harbor and/or secure your vessel for severe wind and seas.
Read the original bulletin (official text)
* WHAT...Typhoon conditions, including winds of 64 knots or more are possible within the next 48 hours. * WHERE...Guam, Rota, Tinian and Saipan Coastal Waters. * WHEN...Through at least Sunday night, possibly longer if conditions warrant. * IMPACTS...Destructive winds will produce dangerous seas that could damage, capsize or sink vessels, along with drastically reducing visibilities in heavy rain. * ADDITIONAL DETAILS...Tropical Storm Champi (29W) is still moving toward the Marianas. The exact path of 29W remains subject to change, however, it is expected to pass through the coastal waters over the weekend. TS 29W is expected to strengthen further today as it approaches, moving through the region as at least a category 1 typhoon, but more likely stronger.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™