Tropical Storm Watch — Tinian Coastal Waters; Saipan Coastal Waters was recorded by Global Incident Tracker on Wednesday, 30 September 2026 at 11:35 UTC. The event is classified as a cyclone / hurricane incident with a severity rating of Severe, and was detected through the US National Weather Service (NWS).
Tropical Storm Watch issued September 30 at 9:35PM ChST by NWS Tiyan GU * 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 Depression 26W continues to develop as it moves westward towards Anatahan and Alamagan. TD 26W is forecasted to become a tropical storm late tonight or early tomorrow morning. Tropical storm force winds are expected to expand southward over Saipan and Tinian Thursday evening. Seas will become hazardous to small craft by Thursday afterno
Where this happened
The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.
Approximate coordinates of the reported event are 37.100°, -95.700°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.
Understanding cyclone / hurricane events
Tropical cyclones, hurricanes and typhoons with damaging wind and surge. Tropical cyclones cause harm through four separate mechanisms: sustained wind, storm surge, inland flooding from rainfall, and tornadoes embedded in outer bands. Historically, storm surge and inland flooding kill far more people than wind.
How severity is rated
Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.
Safety guidance for cyclone / hurricane situations
- Know whether you are in a storm-surge evacuation zone and leave before roads become impassable.
- Shelter in an interior room away from windows; the eye passing overhead is not the end of the storm.
- Stock water, medication, cash, power banks and documents in a waterproof bag.
- Most cyclone deaths come from water, not wind — take flood warnings as seriously as wind warnings.
- Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.
Data and verification
This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.
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Timeline and sources
Official warning
Issued by U.S. National Weather Service. A warning or forecast describes a hazard; on its own it is not a report that harm occurred.
How statuses are decided · the number of reports is never treated as confirmation.
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· received · event time 30 Sep 2026, 11:35 UTCFirst report Official warning
First recorded from U.S. National Weather Service.
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· received · event time 30 Sep 2026, 18:16 UTCAlso reported Official warning
Also reported by U.S. National Weather Service: "Tropical Storm Watch — Tinian Coastal Waters; Saipan Coastal Waters"
Times are when this site received each report, in UTC; the event time is shown where the source gave one. 2 reports are attached to this incident. Copies of one syndicated story count as one report.
Conditions at the time
No rainfall was recorded that day, and the temperature peaked at 31°C, and winds reached 31 km/h.
Weather reanalysis for this location and date via Open-Meteo.