Severe Tropical Storm Warning | Effective 10/02/2026 23:54

Headline: 
Tropical Storm Warning issued October 3 at 4:54PM ChST by NWS Tiyan GU
Event: 
Tropical Storm Warning
Urgency: 
Immediate
Effective: 
October 2, 2026 - 11:54pm
Expires: 
October 3, 2026 - 2:00pm
Description: 
* WHAT...Southwest winds to 35 kt with gusts up to 45 kt and seas 13 to 16 feet. * WHERE...Tinian Coastal Waters and Saipan Coastal Waters. * WHEN...Until further notice. * IMPACTS...Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...Typhoon Choi-wan (26W) will continue strengthening as it moves northeast away from the Marianas, keeping Tinian and Saipan within the tropical storm-force winds.
Instruction: 
A tropical storm warning means sustained winds of 34 to 63 kt are expected due to a tropical storm within 36 hours.
Area Description: 
Tinian Coastal Waters; Saipan Coastal Waters
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov