Moderate Hazardous Seas Warning | Effective 07/06/2026 13:19

Headline: 
Hazardous Seas Warning issued July 7 at 6:19AM ChST until July 9 at 5:00AM ChST by NWS Tiyan GU
Event: 
Hazardous Seas Warning
Urgency: 
Expected
Effective: 
July 6, 2026 - 1:19pm
Expires: 
July 7, 2026 - 3:00am
Description: 
Updated to cancel Typhoon Warning and add Hazardous Seas Warning. ...TYPHOON WARNING IS CANCELLED... ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 5 AM CHST THURSDAY... * WHAT...South to southwest wind 20 to 30 kt with gusts to 45 kt and very steep and hazardous seas of 16 to 20 feet will gradually decrease the next few days. * WHERE...Marianas Coastal Waters. * WHEN...Until 5 AM ChST Thursday. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. * ADDITIONAL DETAILS...As Super Typhoon Bavi continues to move west-northwest and away from the Marianas, conditions will gradually improve in the coming days. For small craft operations, dangerous marine conditions still persist through Wednesday night.
Instruction: 
A hazardous seas warning means hazardous sea conditions are imminent or occurring. Recreational boaters should remain in port...or take shelter until waves subside. Commercial vessels should prepare for rough seas and consider remaining in port or taking shelter in port until hazardous seas subside.
Area Description: 
Guam Coastal Waters; Rota Coastal Waters; Tinian Coastal Waters; Saipan Coastal Waters
Forcast Office: 
NWS Tiyan GU