Severe · Tropical Storm WatchActive alert
Tropical Storm Watch issued October 1 at 4:16AM ChST by NWS Tiyan
Affecting Tinian Coastal Waters; Saipan Coastal Waters
In effect until: Oct 1, 2026, 8:30 AM
Tinian Coastal Waters; Saipan Coastal Waters
Possible impact zone; conditions develop through 8:30 AM.
Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions.
Read the original bulletin (official text)
* WHAT...For the Tropical Storm Watch and Small Craft Advisory, southwest winds 30 to 40 kt with gusts up to 55 kt and seas 11 to 16 feet expected. * WHERE...Tinian and Saipan Coastal Waters. * WHEN...For the Small Craft Advisory, from 5 PM Thursday to 5 PM ChST Sunday. For the Tropical Storm Watch, beginning Thursday evening. * IMPACTS...Tropical storm force winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...Tropical Storm 26W continues to develop as it moves westward towards Anatahan and Alamagan. Tropical storm force winds may expand southward over Saipan and Tinian Thursday evening. Seas will become hazardous to small craft by Thursday afternoon and could become hazardous by Thursday night.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™