Guam, Northern Mariana Islands Coastal Flood Warning | Effective 04/12/2026 22:54
Public safety alert, emergency alert, and weather alert
Description:
* WHAT...For the High Surf Warning, dangerously large breaking waves
of 12 to 16 feet for Guam and 15 to 25 ft for Rota, Tinian and
Saipan. For the Coastal Flood Watch, significant coastal flooding 1
to 3 ft for Guam, and 4 to 8 ft for Rota, Tinian, and Saipan.
* WHERE...North, east and south facing reefs of the Marianas. For the
Coastal Flood Watch, north, east, and south facing shorelines.