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Weather alerts in Guam

All active National Weather Service alerts, each paired with the event code an EAS decoder at your station will see. Refreshed every two minutes.

3Extreme or severe 1Moderate 0Minor or unknown 4All alerts

1 active alert, most severe first. Times are the issuing office's local time.

AlertEAS codeAreaUntilFrom
High Surf WarningModerate · updated
Details

* WHAT...For the Coastal Flood Warning, significant coastal flooding expected. For the High Surf Warning, dangerously large breaking waves up to 35 feet for Guam, 20 to 25 feet for Rota, and 15 to 20 feet for Tinian and Saipan. * WHERE...Guam, Rota, Tinian and Saipan. * WHEN...From 5 PM this afternoon to 4 AM ChST Monday. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some critical infrastructure will be inundated. Shoreline erosion will occur. Breaking waves can sweep people off their feet, and into dangerous seas. Life- threatening swimming conditions and significant beach erosion can be expected. Coastal inundation of 5 to 7 feet for Guam, 2 to 4 feet for Rota and 1 to 3 feet for Tinian and Saipan is possible along with coastal flooding and beach erosion. * ADDITIONAL DETAILS...Surf is expected to rise rapidly to dangerous levels tonight. Coastal impacts to the western coast of Guam and Rota are highly dependent on the final track of Champi; passage south of Guam would be reduced impacts whereas passage over Guam would result in larger coastal inundation.

What to do: Everyone should remain out of the water due to life-threatening surf conditions. Stay well away from the coast.

 not sent over EAS Guam; Rota; Tinian; Saipan Oct 19, 4:00 AM NWS Tiyan GU

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How these alerts work

  • Alerts are the National Weather Service CAP alerts (api.weather.gov), refreshed every two minutes. Tests and exercises are left out; only actual alerts appear.
  • The EAS code comes from the event code in the SAME header of the alert (TOR, SVR or FFW, for example). Alerts the Weather Service does not put out over EAS, including most advisories, read "not sent over EAS".
  • Your state EAS plan and your decoder settings decide whether your station relays a given alert.

Alert text comes from the National Weather Service. Neither the NWS nor the FCC produces this page.