Active Weather Alerts
High Surf Advisory
Issued: 1:28 AM Apr. 19, 2026 – National Weather Service
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 AM CHST MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TONIGHT... ...COASTAL FLOOD ADVISORY HAS EXPIRED... * WHAT...For the High Surf Advisory, large breaking waves of 10 to 14 feet and dangerous rip currents. * WHERE...South, west, and north facing reefs and shorelines of Tinian and Saipan. * WHEN...For the High Surf Advisory and High Rip Current Risk, until 5 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 Tropical Storm Sinlaku continues to move away, the primary swell and highest surf will be northwest. Seas and surf will be slow to subside over the next couple of days. The coastal flood threat has fallen below moderate levels, though nuisance inundation will still be possible through the rest of today. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. &&
Rip Current Statement
Issued: 1:28 AM Apr. 19, 2026 – National Weather Service
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 5 AM CHST MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TONIGHT... ...COASTAL FLOOD ADVISORY HAS EXPIRED... * WHAT...For the High Surf Advisory, large breaking waves of 10 to 14 feet and dangerous rip currents. * WHERE...South, west, and north facing reefs and shorelines of Tinian and Saipan. * WHEN...For the High Surf Advisory and High Rip Current Risk, until 5 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 Tropical Storm Sinlaku continues to move away, the primary swell and highest surf will be northwest. Seas and surf will be slow to subside over the next couple of days. The coastal flood threat has fallen below moderate levels, though nuisance inundation will still be possible through the rest of today. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. &&
Small Craft Advisory
Issued: 6:01 PM Apr. 18, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... * WHAT...Seas 9 to 12 feet. * WHERE...Guam, Rota, Tinian, and Saipan Coastal Waters. * WHEN...Until 5 PM ChST today. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Elevated, choppy seas hazardous to small craft continue in the wake of Tropical Storm Sinlaku. Latest buoy and altimetry data indicate combined seas of 9 to 12 feet. Seas will be slow to subside over the next few days, and the Small Craft Advisory has been extended through this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions. &&
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