Active Weather Alerts
Small Craft Advisory
Issued: 6:04 PM Apr. 17, 2026 – National Weather Service
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 AM CHST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... * WHAT...For the Hazardous Seas Warning, very steep and hazardous seas 12 to 16 feet. For the Small Craft Advisory, west winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Guam and Rota Coastal Waters. * WHEN...For the Hazardous Seas Warning, until 11 AM ChST today. For the Small Craft Advisory, until 5 PM ChST today. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. * ADDITIONAL DETAILS...Hazardous marine conditions continue in the wake of Typhoon Sinlaku. Combined seas of 12 to 16 feet will keep marine conditions hazardous until this morning. Seas will be slow to subside and Small Craft Advisory winds will continue into the weekend. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. &&
High Surf Advisory
Issued: 6:04 PM Apr. 17, 2026 – National Weather Service
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 AM CHST THIS MORNING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 5 PM CHST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 11 to 15 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 this morning. For the Coastal Flood Advisory, until 5 PM ChST today. For the High Surf Advisory, from 10 AM this morning 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 16 feet are expected for Guam and Rota. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. &&
Coastal Flood Advisory
Issued: 6:04 PM Apr. 17, 2026 – National Weather Service
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 AM CHST THIS MORNING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 5 PM CHST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 11 to 15 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 this morning. For the Coastal Flood Advisory, until 5 PM ChST today. For the High Surf Advisory, from 10 AM this morning 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 16 feet are expected for Guam and Rota. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. &&
Rip Current Statement
Issued: 6:04 PM Apr. 17, 2026 – National Weather Service
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 AM CHST THIS MORNING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 5 PM CHST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 11 to 15 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 this morning. For the Coastal Flood Advisory, until 5 PM ChST today. For the High Surf Advisory, from 10 AM this morning 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 16 feet are expected for Guam and Rota. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. &&
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