Guam, Northern Mariana Islands Moderate Coastal Flood Watch | Effective 07/03/2026 00:48

Headline: 
Coastal Flood Watch issued July 3 at 5:48PM ChST until July 7 at 6:00AM ChST by NWS Tiyan GU
Event: 
Coastal Flood Watch
Urgency: 
Future
Effective: 
July 3, 2026 - 12:48am
Expires: 
July 4, 2026 - 1:00am
Description: 
* WHAT...Significant coastal flooding. * WHERE...Guam, Rota, Tinian and Saipan. * WHEN...Through late Tuesday night. * IMPACTS...Some roads may be closed. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Shoreline erosion may occur. * ADDITIONAL DETAILS....Inundation will vary over the Marianas, on the outer edges of the storm, inundation could be as low as to 2 feet, near the eye wall inundation could reach up to 16 to 19 feet.
Instruction: 
A coastal flood watch means that conditions favorable for flooding are expected to develop. Coastal residents should be alert for later statements or warnings...and take action to protect property.
Area Description: 
Guam; Rota; Tinian; Saipan
Forcast Office: 
NWS Tiyan GU