318 WTPQ81 PGUM 141202 HLSPQ1 URGENT - IMMEDIATE BROADCAST REQUESTED Super Typhoon Sinlaku (04W) Local Statement National Weather Service Tiyan GU 1002 PM ChST Tue Apr 14 2026 ...DANGEROUS SUPER TYPHOON SINLAKU MAKING LANDFALL ON THE EASTERN SHORES OF TINIAN AND SAIPAN... .NEW INFORMATION... None. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Guam and the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning continues for Rota, Tinian, and Saipan. A Typhoon Warning continues for Alamagan, Pagan, and Agrihan. A Tropical Storm Warning and a Typhoon Watch continues for Guam. A Flood Watch is in effect for all of Guam and the Northern Marianas. Please listen closely for any Flood Warnings that might be in effect for your area. Please check the latest public and marine forecasts for detailed information about additional hazards. .STORM INFORMATION... At 945 PM ChST...the center of Super Typhoon Sinlaku (04W) was located near latitude 14.9N...longitude 145.8E. This was about 15 miles east-southeast of Tinian, 15 miles south-southeast of Saipan and 120 miles northeast of Guam. Storm motion was north-northwest, 320 degrees, at 5 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Super Typhoon Sinlaku (04W) is starting to make landfall on the eastern shores of Tinian and Saipan. The inner eyewall has winds up to 150 mph possible. Due to the slow forward speed, a prolong period of winds excess of 115 mph is expected as Sinlaku passes over or near Tinian and Saipan over the next few hours. Strong Tropical Storm force winds continue across Guam and Rota. .PRECAUTIONARY/PREPAREDNESS ACTIONS... For those under a warning in Guam, Rota, Tinian, and Saipan, remain in a designated shelter or in a sturdy, fully reinforced concrete building to ride out the storm until winds have subsided and the "all clear" is given. Stay inside and away from window. Do not venture outside when high winds are occurring as flying debris can easily cause serious injury. For those under a warning in the far northern Marianas Islands of Alamagan, Pagan, Agrihan, preparations for the protection of life and property should be completed and should be seeking shelter to ride out the storm. Closely monitor NOAA weather radio or other local news outlets for official storm information. Listen for possible changes to the forecast. For additional precautionary and preparedness information, please refer to the detailed recommendations relative to your location as further described by your local National Weather Service office and local emergency management. && .NEXT UPDATE... The next local statement will be issued by the National Weather Service in Tiyan around 3 AM ChST...or sooner if conditions warrant. GUZ001-142045- /O.CON.PGUM.TR.W.4004.000000T0000Z-000000T0000Z/ /O.CON.PGUM.TY.A.4004.000000T0000Z-000000T0000Z/ Guam- 1002 PM ChST Tue Apr 14 2026 ...TROPICAL STORM WARNING REMAINS IN EFFECT... ...TYPHOON WATCH REMAINS IN EFFECT... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 and will continue through the overnight hours before starting to decrease Wednesday morning. Due to the size of the storm, tropical storm force winds are not expected to end until late Wednesday evening. Even when winds start to decrease, remain indoors until the government of Guam gives the "all clear". && ...WIND INFORMATION... As the eye of Super Typhoon Sinlaku (04W) continues to move toward Tinian and Saipan, Guam will continue to see west strong tropical storm force winds around 50 to 60 mph and gusts up 75 mph through the overnight hours. Then, tropical storm force winds are forecasted slowly subside Wednesday as winds shift to the southwest forecasted to subside below 39 mph late Wednesday evening. ...COASTAL INUNDATION AND SURF INFORMATION... Dangerous surf of 13 to 18 feet are occurring across south, west, and and north facing reefs of Guam, driven by the westerly winds. While surf is expected to slowly subside along east facing reefs, surf is likely still dangerous at around 11 to 13 feet. Greatest coastal flooding will likely be along west facing shores and beaches due to the wind driven waves, with 1 to 3 ft is still expected so the Coastal Flood Warning remains in effect. Inland flooding made worse by developing rain bands during storm passage will significantly increase coastal inundation as rain run-off and storm surge interact. Surf will be slow to decrease after Sinlaku's exit to the north- northwest in the second half of the week, as swells will continue to pummel western Marianas shores. ...OTHER STORM EFFECTS... Heavy, intense rainfall with STY Sinlaku is likely, as quick- moving rainbands rotate across Guam south of Sinlaku and will likely continue to do so through at least Wednesday morning, before shifting to the northwest of the island. 6 to 12 inches of rainfall are still possible. As such, a Flood Watch remains in effect for Guam. See latest forecast for latest information. Listen for possible flash flood warnings for your location, and be ready to act if flash flooding develops. $$ MPZ001>003-142045- /O.CON.PGUM.TY.W.4004.000000T0000Z-000000T0000Z/ Rota-Tinian-Saipan- 1002 PM ChST Tue Apr 14 2026 ...TYPHOON WARNING REMAINS IN EFFECT... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 STY Sinlaku moves near or over Tinian and Saipan. These winds will continue through the overnight hours before starting to decrease Wednesday morning. Due to the size of the storm, tropical storm force winds are not expected to end until Wednesday night for Rota and late Thursday morning for Tinian and Saipan. Even when winds start to decrease, remain indoors until the "all clear" is given. && ...WIND INFORMATION... For Rota, the island is currently in-between heavier rain bands and may be experiencing a lull in winds, but strong westerly tropical storm winds around 50 to 60 mph with gusts to 75 mph are still expected, especially as the heavy rain band over Guam lifts northwest, following the center of Sinlaku, The risk for Typhoon force winds of 75 mph are still possible over the next few hours as typhoon winds are just north of the island and across Tinian and Saipan. Winds are then expected to decrease to 45 to 55 mph with gusts to 65 mph Wednesday morning as winds shift southwest and then decrease further to 35 to 45 mph Wednesday night, before dropping to below tropical storm force winds of 39 mph Thursday morning. For Tinian and Saipan, winds of 150 with gusts to 175 mph possible as the eyewall is starting to reach Tinian and Saipan. Devastating damage is expected as center moves over or near Tinian and Saipan. Airborne debris will cause extensive damage. Persons, pets, and livestock struck by the wind blown debris will be injured or killed. Nearly all metal roof homes will be destroyed. Electricity and water will be unavailable for days and perhaps weeks after the storm passes. Most trees will be snapped or uprooted. Fallen trees may cut off residential areas for days to weeks. ...COASTAL INUNDATION AND SURF INFORMATION... Dangerous surf at Rota is expected be around to around 15 to 20 feet, especially along west facing reefs due to westerly wind driven waves. For Tinian and Saipan 20 to 30 feet is possible along all reefs as the center passes near or over the islands. Rota, inundation of 3-5 feet is expected as surf and wind-driven waves impact the island, especially along shores and beaches exposed to the westerly wind. For Tinian and Saipan, inundation of at least 5 to 8 feet is expected but wind-and wave-driven surf could push water onto land 10 to 15 ft above mean water-level, especially along windward facing beaches and reefs. A Coastal Flood Warning remains in effect. Inland flooding made worse by developing rain bands during storm passage will significantly increase coastal inundation as rain run-off and storm surge interact. Surf will be slow to decrease after Sinlaku's exit to the northwest in the second half of the week, as swells will continue to pummel western Marianas shores. ...OTHER STORM EFFECTS... Heavy, intense rainfall with STY Sinlaku is expected. Microwave satellite estimates suggest rainfall amounts upwards of 15 to 20 inches are occurring around the center and will be possible at Tinian and Saipan. For Rota 6 to 12 inches of rainfall are possible if a heavy rain band stalls over the island. A Flood Watch remains in effect for Rota, Tinian, and Saipan. See latest forecast for latest information. Listen for possible flash flood warnings for your location, and be ready to act if flash flooding develops. && ...ALAMAGAN... ...TYPHOON WARNING NOW IN EFFECT FOR ALAMAGAN... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and windy conditions associated with Super 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 tonight with typhoon winds around 75 mph starting late tonight or early We as Sinlaku passes near 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 STY 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. && ...PAGAN... ...TYPHOON WARNING REMAINS IN EFFECT FOR PAGAN... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and windy conditions associated with Super 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 tonight with typhoon winds around 75 mph starting late tonight or early We as Sinlaku passes near 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 STY Sinlaku is likely for much of the week, bringing rainfall amounts of 8 to 13 inches by the Friday. && ...AGRIHAN... ...TYPHOON WARNING REMAINS IN EFFECT FOR AGRIHAN... ..PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and windy conditions associated with Super 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 tonight will be increasing with typhoon winds around 75 mph reaching the island around Thursday morning or early afternoon as Sinlaku passes near 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 the end of the week 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 STY Sinlaku is likely for much of the week, bringing rainfall amounts of 8 to 13 inches by the Friday. $$ Schank