High Surf Advisory issued October 18 at 5:53PM ChST until October 19 at 4:00AM ChST by NWS Tiyan GU
Official severe-weather alerts, warning areas, and disaster updates.
expired · active · official-source
* 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...South and west facing reefs of Guam and Rota. * 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 region, surf has fallen below life-threatening levels but will remain hazardous at least through tonight. In addition, storm- induced coastal inundation and significant coastal erosion are no longer expected. Even so, minor wave run-up can still occur. 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.
- Event time
- Source last updated
- Current version retrieved
- Provider
- NWS — active weather alerts (Storm)
- Location
- US
- Severity
- Minor
- area
- Guam; Rota
- event
- High Surf Advisory
- onset
- 2026-10-18T17:53:00+10:00
- states
- ["GU","MP"]
- urgency
- Expected
- certainty
- Likely
- effective
- 2026-10-18T17:53:00+10:00
- message id
- urn:oid:2.49.0.1.840.0.9a98eba330bbd9d7ea9818481f842bd2930f2c43.001.3
- references
- []
- 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.
- message type
- Alert
- location basis
- Approximate: centers of the NWS zones listed in the alert
- freshness minutes
- 60
Source use policy · US government work (17 U.S.C. 105)
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