Northern Mariana Islands Minor High Surf Advisory | Effective 10/17/2026 19:00

Headline: 
High Surf Advisory issued October 18 at 12:00PM ChST until October 19 at 4:00AM ChST by NWS Tiyan GU
Event: 
High Surf Advisory
Urgency: 
Expected
Effective: 
October 17, 2026 - 7:00pm
Expires: 
October 18, 2026 - 9:00am
Description: 
* WHAT...For the High Surf Advisory, large breaking waves of 10 to 14 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...East and south facing reefs of Tinian and Saipan. * WHEN...Until 4 AM 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...As Super Typhoon Champi continues moving away from the Marianas, swells from the southeast have diminished enough for surf to drop below 15 FT and for coastal inundation to no longer be a concern. However, elevated surf and dangerous rip currents will continue along east and south facing reefs through tonight.
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: 
Tinian; Saipan
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov