Guam, Northern Mariana Islands Minor High Surf Advisory | Effective 08/22/2026 23:07

Headline: 
High Surf Advisory issued August 23 at 4:07PM ChST until August 24 at 4:00PM ChST by NWS Tiyan GU
Event: 
High Surf Advisory
Urgency: 
Expected
Effective: 
August 22, 2026 - 11:07pm
Expires: 
August 23, 2026 - 1:15pm
Description: 
* WHAT...For the High Surf Advisory, large breaking waves of 8 to 10 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Along west-facing reefs. * WHEN...Until 4 PM ChST Monday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...A combination of the remnant monsoon surge and Tropical Depression 19W, well northwest of Yap Island, are producing a long-period southwest swell of 7 to 8 ft capable of high surf and dangerous rip currents along west-facing reefs. Conditions may begin to subside Monday night, so conditions will continue to be monitored.
Instruction: 
Rip currents will be life threatening. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Rip currents will be life threatening. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.
Area Description: 
Guam; Rota; Tinian; Saipan
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov