High Surf Advisory issued January 17 at 3:04PM ChST until January 18 at 4:00AM ChST by NWS Tiyan GU

* WHAT…For the High Surf Advisory, large breaking waves of 6 to
9 feet in the surf zone. For the High Rip Current Risk, dangerous
rip currents.

* WHERE…For the High Surf Advisory, along north facing reefs of
the Marianas. For the High Risk of Rip Currents, along north and
east facing reefs of the Marianas.

* WHEN…For the High Surf Advisory, until 4 AM ChST Saturday.
For the High Rip Current Risk, through late tonight.

* 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…Elevated trade swell and north swell continue
to relax, allowing hazardous surf and rip current risk for north
facing reefs to diminish. However, the high rip current risk for
east facing reefs may need to be extended as the trade swell
remains elevated a bit longer.