Guam, Northern Mariana Islands Minor High Surf Advisory | Effective 09/03/2026 22:40

Headline: 
High Surf Advisory issued September 4 at 3:40PM ChST until September 5 at 4:00AM ChST by NWS Tiyan GU
Event: 
High Surf Advisory
Urgency: 
Expected
Effective: 
September 3, 2026 - 10:40pm
Expires: 
September 4, 2026 - 11:00am
Description: 
* WHAT...For the High Surf Advisory, large breaking waves of 7 to 9 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...West-facing reefs of the Marianas. * WHEN...Until 4 AM ChST Saturday. * 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...Large surf and dangerous rip currents along west-facing reefs will linger longer than previously anticipated. After tonight, the elevated westerly swell will diminish, allowing surf to drop below advisory levels and the rip current risk to drop to moderate.
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