High Surf Advisory issued April 17 at 4:00PM ChST until April 19 at 5:00PM ChST by NWS Tiyan GU

Details

* WHAT...For the High Surf Warning, dangerously large breaking waves
of 16 to 20 feet. For the Coastal Flood Advisory, minor coastal
flooding of 1 to 2 feet. For the High Surf Advisory, large breaking
waves of 10 to 14 feet expected. For the High Rip Current Risk,
dangerous rip currents.

* WHERE...South, west and north facing reefs and shorelines of
Guam and Rota.

* WHEN...For the High Surf Warning, until 10 AM ChST Saturday.
For the Coastal Flood Advisory, until 5 PM ChST Saturday. For the
High Surf Advisory, from 10 AM Saturday to 5 PM ChST Sunday. For
the High Rip Current Risk, through Sunday afternoon.

* IMPACTS...Flooding of lots, parks, and roads with only isolated
road closures expected. Breaking waves can sweep people off jetties
and docks, and into dangerous seas. Life-threatening swimming
conditions and significant beach erosion can be expected. Rip
currents can sweep even the best swimmers away from shore into
deeper water.

* ADDITIONAL DETAILS...As TY Sinlaku continues to move away, the
primary swell and highest surf will be northwest. Seas will be
slow to subside over the next couple of days. Surf heights of 12
to 18 feet are expected for Guam and Rota.