Headline:
High Surf Warning issued April 17 at 4:26AM ChST until April 17 at 5:00PM ChST by NWS Tiyan GU
Event:
High Surf Warning
Urgency:
Expected
Effective:
April 16, 2026 - 11:26am
Expires:
April 17, 2026 - 1:30am
Description:
* WHAT...For the High Surf Warning, dangerously large breaking
waves of 12 to 18 feet in the surf zone. 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 in
the surf zone. 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 5 PM ChST today. For
the Coastal Flood Advisory, until 5 PM ChST Saturday. For the
High Surf Advisory, from 5 PM today to 5 PM ChST Saturday. For
the High Rip Current Risk, through Saturday 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 and
wind driven waves decrease, the primary swell and highest surf
will be southwest. 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.
Instruction:
Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.
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
Forcast Office:
NWS Tiyan GU
Sender: