Moderate Hazardous Seas Watch | Effective 10/02/2026 15:50

Headline: 
Hazardous Seas Watch issued October 3 at 8:50AM ChST until October 4 at 5:00PM ChST by NWS Tiyan GU
Event: 
Hazardous Seas Watch
Urgency: 
Future
Effective: 
October 2, 2026 - 3:50pm
Expires: 
October 3, 2026 - 1:00am
Description: 
..GALE WARNING REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... ...HAZARDOUS SEAS WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...For the Gale Warning, southwest winds 25 to 35 kt with frequent gusts up to 45 kt and seas 15 to 18 feet expected. For the Hazardous Seas Watch, very steep and hazardous seas 15 feet or greater possible. * WHERE...Guam and Rota Coastal Waters. * WHEN...For the Gale Warning, until 5 PM ChST this afternoon. For the Hazardous Seas Watch, from this afternoon through Sunday afternoon. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...Combined seas of 15 to 18 feet through this afternoon, then gradually diminish. West to southwest winds will be strong to gale-force.
Instruction: 
Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions.
Area Description: 
Guam Coastal Waters; Rota Coastal Waters
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov