Severe Tropical Storm Warning | Effective 10/02/2026 05:41

Headline: 
Tropical Storm Warning issued October 2 at 10:41PM ChST by NWS Tiyan GU
Event: 
Tropical Storm Warning
Urgency: 
Immediate
Effective: 
October 2, 2026 - 5:41am
Expires: 
October 2, 2026 - 7:45pm
Description: 
* WHAT...Southwest tropical storm force wind to 40 kt with gusts to 60 kt and seas 14 to 20 feet. * WHERE...Tinian 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...Tropical Storm Choi-wan (26W) continues to strengthen as it slowly pivots north-northeast near the northern Marianas west of Alamagan, with Tropical storm force winds already being felt over Saipan since early this morning. Hazardous seas will continue.
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