Northern Mariana Islands Typhoon Warning | Effective 04/14/2026 22:57

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 occurring at Rota, south-southwest typhoon force winds remain across Tinian and Saipan and continue to slowly decrease through 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 or Thursday night 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....Typhoon Warning remains in effect... .WIND INFORMATION... Northeasterly tropical storm force winds around 39 mph are expected to increase with typhoon winds around 75 mph possibly starting late tonight or Thursday morning as Sinlaku passes to the west, and winds shift towards 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 through the latter half of the week, bringing rainfall amounts of 10 to 15 inches by Friday, with rainfall amounts upwards of 15 to 25 inches near the center, as the system moves across the northern CNMI. 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 through the latter half of the week, bringing rainfall amounts of 10 to 15 inches by Friday, with rainfall amounts upwards of 15 to 25 inches near the center, as the system moves across the northern CNMI. 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 through the latter half of the week, bringing rainfall amounts of 10 to 15 inches by Friday, with rainfall amounts upwards of 15 to 25 inches near the center, as the system moves across the northern CNMI. The exact track of Sinlaku will determine where the heaviest rainfall will set up across the islands.