Northern Mariana Islands Typhoon Warning | Effective 04/14/2026 10:30

People should be in a designated shelter or in a sturdy and reinforced concrete building to ride out the storm as strong tropical storm force winds are are occurring at Rota, while devastating winds in excess of 115 mph are expected at Tinian and Saipan over the next few hours as the center of TY Sinlaku moves northwest and starts to move away from Tinian and Saipan. These winds will continue through the into the early morning hours and then slowly decreasing through the rest of today and tonight. Due to the size of the storm, the latest forecast has tropical storm force winds continuing at Rota through Thursday morning, and Thursday evening for Tinian and Saipan. Even when winds start to decrease, remain indoors until the "all clear" is given. Stay indoors during heavy rain and windy conditions associated with Typhoon Sinlaku (04W). The window of time to complete preparations for the protection of life and property has closed. Find shelter to ride out the storm. Remain in a sturdy shelter until the "all clear" is given. Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office in Tiyan, Guam. .WIND INFORMATION... Northeasterly tropical storm force winds around 39 mph are expected to increase through today with typhoon winds around 75 mph possibly starting late tonight or Thursday morning as Sinlaku passes to the west, and winds shift toward the southeast. The size of the storm and overall storm motion will maintain southeast tropical storm winds through Friday afternoon as Sinlaku continues on its accelerated northward trek after exiting the Marianas later in the week. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 20 to 30 feet remain possible, with dangerous surf and significant coastal inundation and beach erosion possible. .OTHER STORM EFFECTS... Heavy, intense rainfall with TY Sinlaku is likely for much of the week, bringing rainfall amounts of 10 to 13 inches by Friday, with rainfall amounts upwards of 15 to 25 inches near the center, as the system crosses the Marianas. The exact track of Sinlaku will determine where the heaviest rainfall will set up across the islands. Stay indoors during heavy rain and windy conditions associated with Typhoon Sinlaku (04W). The window of time to complete preparations for the protection of life and property has closed. Find shelter to ride out the storm. Remain in a sturdy shelter until the "all clear" is given. Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office in Tiyan, Guam. .WIND INFORMATION... Northeasterly tropical storm force winds around 39 mph are expected to increase today with typhoon winds around 75 mph possibly starting Thursday morning as Sinlaku passes to the west, and winds shift toward the southeast. The size of the storm and overall storm motion will maintain southeast tropical storm winds through Friday afternoon as Sinlaku continues on its accelerated northward trek after exiting the Marianas later in the week. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 20 to 30 feet remain possible, with dangerous surf and significant coastal inundation and beach erosion possible. .OTHER STORM EFFECTS... Heavy, intense rainfall with TY Sinlaku is likely for much of the week, bringing rainfall amounts of 8 to 13 inches by the Friday, with rainfall amounts upwards of 15 to 25 inches near the center, as the system crosses the Marianas. The exact track of Sinlaku will determine where the heaviest rainfall will set up across the islands. Stay indoors during heavy rain and windy conditions associated with Typhoon Sinlaku (04W). The window of time to complete preparations for the protection of life and property has closed. Find shelter to ride out the storm. Remain in a sturdy shelter until the "all clear" is given. Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office in Tiyan, Guam. .WIND INFORMATION... Northeasterly tropical storm force winds around 39 mph will be increasing today with typhoon winds around 75 mph possibly reaching the island around Thursday afternoon as Sinlaku passes nearby to the west, and winds shift toward the southeast. The size of the storm and overall storm motion will maintain southeast tropical storm winds into Friday evening as Sinlaku continues on its accelerated northward trek after exiting the Marianas. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 20 to 30 feet will be possible, with dangerous surf and significant coastal inundation and beach erosion possible. .OTHER STORM EFFECTS... Heavy, intense rainfall with TY Sinlaku is likely for much of the week, bringing rainfall amounts of 8 to 13 inches by the Friday, with rainfall amounts upwards of 15 to 25 inches near the center, as the system crosses the Marianas. The exact track of Sinlaku will determine where the heaviest rainfall will set up across the islands.