WTPQ81 PGUM 121119 HLSPQ1 URGENT - IMMEDIATE BROADCAST REQUESTED Super Typhoon Sinlaku (04W) Local Statement National Weather Service Tiyan GU 919 PM ChST Sun Apr 12 2026 ...SINLAKU UPGRADED TO SUPER TYPHOON AND IS MOVING NORTHWEST TOWARD THE MARIANAS... .NEW INFORMATION... Sinlaku in now a super typhoon. .AREAS AFFECTED... This local statement provides important information and recommended actions for people in Chuuk State, Guam and the Northern Marianas. .WATCHES/WARNINGS... A Typhoon Warning continues for Rota, Tinian, and Saipan. A Tropical Storm Warning and a Typhoon Watch continues for Guam. A Typhoon Warning remains in effect for Fananu in Chuuk State. A Tropical Storm Warning remains in effect for Ulul in Chuuk State. A Tropical Storm Watch remains in effect for Pagan and Alamagan. A Typhoon Watch remains in effect for Ulul in Chuuk State. 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 7 PM ChST...the center of Super Typhoon Sinlaku (04W) was located near latitude 10.6N...longitude 150.3E. This was about 420 miles east-southeast of Guam. Storm motion was northwest, 310 degrees, at 9 mph. Storm intensity was 150 mph. .SITUATION OVERVIEW... Typhoon Sinlaku (04W) is slowly moving away from Chuuk State, as it moves northwest and continues heading towards the Marianas. In the meantime, Sinlaku continues to bring periods of intense showers, thunderstorms, and winds to a large portion of Chuuk State, primarily to Ulul and Fananu. Recent storm tracks produced by JTWC continue to show a slight northward shift in the storm path during its passage toward the Marianas, and is still expected to cross somewhere between Rota and Saipan. Latest forecast has Sinlaku moving into the Marianas as a category 4 or 5 typhoon. .PRECAUTIONARY/PREPAREDNESS ACTIONS... For those under a warning, now is the time to rush to completion preparations for the protection of life and property. Evacuate if directed to do so by local officials, or if your home is vulnerable to high winds or flooding. For interests at ports...docks...and marinas...urgently complete prescribed preparations according to your emergency operations plan for tropical cyclones. If you live on a boat...make final preparations for securing your craft before leaving it. Small craft should remain in port and well secured. Closely monitor NOAA weather radio or other local news outlets for official storm information. Listen for possible changes to the forecast. Stay indoors during heavy rain and windy conditions associated with Typhoon Sinlaku (04W). The onset of damaging, and potentially destructive winds, will pose a deadly threat to those venturing outside. 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. GUZ001-121930- /O.CON.PGUM.TR.W.4004.000000T0000Z-000000T0000Z/ /O.CON.PGUM.TY.A.4004.000000T0000Z-000000T0000Z/ Guam- 919 PM ChST Sun Apr 12 2026 ...TROPICAL STORM WARNING REMAINS IN EFFECT... ...TYPHOON WATCH REMAINS IN EFFECT... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... For those under a warning, now is the time to rush to completion preparations for the protection of life and property. Items to bring to a shelter include a first aid kit, medicines and prescriptions, baby food and diapers, games and books, toiletries, a battery powered radio, a cell phone, flashlights with extra batteries, a blanket or sleeping bag for each person, personal identification, copies of key papers such as insurance policies, available cash and credit cards. Remember, pets are not allowed in most public shelters, so check ahead with your intended shelter. Regarding your home or business, cover all windows and doors with shutters or plywood. Move patio furniture and other loose objects indoors. Brace all exterior doors, including garage doors. Do this as early as possible. If you need to make a trip to the hardware store, the grocery store, or the gas station, do so as early as possible. Stay calm and keep informed. Comply with any evacuation orders that are issued for your area. If you live in a metal roof or container home, or you live in a surge zone or any location prone to flooding, evacuate to a designated shelter or ride out the storm in the sturdy home of family or friends outside of evacuation zones. && ...WIND INFORMATION... As Super Typhoon Sinlaku (04W) moves closer, the threat for sustained high winds is likely to increase. North to northeast tropical storm force winds of are currently forecast to begin affecting Guam Monday evening or Monday night, especially near the northern coastal waters and shores of Guam coming into Tuesday. The latest forecast has strong tropical storm force winds around 50 to 60 mph and gusts to 70 mph Tuesday into late Tuesday evening as winds shift towards the northwest and then west. Tropical storm force winds are currently forecast to continue into Wednesday. ...COASTAL INUNDATION AND SURF INFORMATION... Due to higher astronomical tides this week and pre-existing elevated seas due to non-TC features in the area, hazardous surf is likely to become dangerous across north, east and south reefs in the Marianas as surf builds to 15 feet tonight, and potentially spreading to west facing reefs once STY Sinlaku moves west of the islands in the next few days. The more northern trek of Sinlaku could help to limit the peak of coastal inundation but inundation of 2 feet or more is still possible as early as Monday morning; as such, a Coastal Flood Watch 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 likely Monday through Wednesday, with rainfall amounts upwards of 15 to 20 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. The more northern track currently forecast will likely shift this heavier rainfall north of Guam, but 6 to 12 inches of rainfall is 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>003-121930- /O.CON.PGUM.TY.W.4004.000000T0000Z-000000T0000Z/ Rota-Tinian-Saipan- 919 PM ChST Sun Apr 12 2026 ...TYPHOON WARNING IN EFFECT... ...PRECAUTIONARY/PREPAREDNESS ACTIONS... For those under a warning, now is the time to rush to completion preparations for the protection of life and property. Items to bring to a shelter include a first aid kit, medicines and prescriptions, baby food and diapers, games and books, toiletries, a battery powered radio, a cell phone, flashlights with extra batteries, a blanket or sleeping bag for each person, personal identification, copies of key papers such as insurance policies, available cash and credit cards. Remember, pets are not allowed in most public shelters, so check ahead with your intended shelter. Regarding your home or business, cover all windows and doors with shutters or plywood. Move patio furniture and other loose objects indoors. Brace all exterior doors, including garage doors. Do this as early as possible. If you need to make a trip to the hardware store, the grocery store, or the gas station, do so as early as possible. Stay calm and keep informed. Comply with any evacuation orders that are issued for your area. If you live in a metal roof or container home, or you live in a surge zone or any location prone to flooding, evacuate to a designated shelter or ride out the storm in the sturdy home of family or friends outside of evacuation zones. && ...WIND INFORMATION... As Super Typhoon Sinlaku (04W) moves closer, the threat for sustained high winds will continue to increase. The latest forecast is for Tropical storm force winds to begin affecting Rota, Tinian and Saipan Monday evening or Monday, with Typhoon force winds developing Tuesday. STY Sinlaku still has potential to cross the Marianas as a category 4 or 5 Typhoon. Current forecast supports winds around 90 to 120 mph across the islands, but peak winds near of 145 to 150 mph could be found near the center, with latest track still supporting passage somewhere between Rota and Saipan. A general concern should be for the possibility of at least extensive damage somewhere within Northern Marianas under the Typhoon Warning. ...COASTAL INUNDATION AND SURF INFORMATION... Due to higher astronomical tides this week and pre-existing elevated seas due to non-TC features in the area, hazardous surf is likely to become dangerous across north, east and south reefs in the Marianas as surf builds to 15 feet tonight, and potentially spreading to west facing reefs once TY Sinlaku moves west of the islands over the next few days. Coastal inundation is becoming more likely, now possible as early as Monday morning; as such, a Coastal Flood Watch remains in effect beginning Monday morning for significant coastal inundation of 2 feet or more possible. Windward shores could see inundation of at least 4-7 feet. 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 TY Sinlaku is likely for much of the week, with rainfall amounts upwards of 15 to 20 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. As such, 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... ...TROPICAL STORM WATCH REMAINS IN EFFECT FOR ALAMAGAN... ..PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and windy conditions associated with Typhoon Sinlaku (04W). Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office. Remain in a sturdy shelter until the all clear is given. .WIND INFORMATION... Fresh northeasterlies are expected to begin increasing tonight, with tropical storm force winds possible Tuesday afternoon, maintaining these conditions for several days after if Sinlaku continues on its accelerated northward trek after exiting the Marianas in the second half of the week. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 10 to 16 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, with rainfall amounts upwards of 15 to 20 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... ...TROPICAL STORM WATCH IN EFFECT FOR PAGAN... ..PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and windy conditions associated with Typhoon Sinlaku (04W). Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office. Remain in a sturdy shelter until the all clear is given. .WIND INFORMATION... Fresh northeasterlies are expected to begin increasing tonight, with tropical storm force winds possible Tuesday evening, maintaining these conditions for several days after if Sinlaku continues on its accelerated northward trek after exiting the Marianas in the second half of the week. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 10 to 16 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, with rainfall amounts upwards of 15 to 20 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. && ...FANANU... ....TYPHOON WARNING REMAINS IN EFFECT FOR FANANU... ..PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and very windy conditions associated with Typhoon Sinlaku (04W). Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office. Remain in a sturdy shelter until the all clear is given. Venturing outside is likely to pose a deadly threat to life. .WIND INFORMATION... As Super Typhoon Sinlaku maintains northwest course, south to southwest tropical storm force winds around 39 to 45 mph will continue into the overnight hours, potentially decreasing early Monday morning below tropical storm force winds. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 12 to 16 feet remain possible, with dangerous surf and significant coastal inundation and beach erosion expected. .OTHER STORM EFFECTS... Another 3 to 5 inches of additional rainfall is possible within as the center of STY Sinlaku continues moving northwest towards the Marianas. && ...ULUL... ...TYPHOON WATCH REMAINS IN EFFECT FOR ULUL... ...TROPICAL STORM WARNING REMAINS IN EFFECT FOR ULUL... ..PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay indoors during heavy rain and windy conditions associated with Super Typhoon Sinlaku (04W). Heed the advice of your local emergency managers and officials, and continue to monitor forecasts by your local National Weather Service office. Remain in a sturdy shelter until the all clear is given. .WIND INFORMATION... Tropical Storm force winds continue at Ulul, as Sinlaku continues to move away to the northwest. Damaging southwesterly winds of 40 to 45 mph are expected to persist through at least early Monday morning, with winds becoming more south and decreasing through the day Monday as Sinlaku continues to move away toward the Marianas. .COASTAL INUNDATION AND SURF INFORMATION... Seas of 10 to 14 feet remain possible, with dangerous surf and significant coastal inundation and beach erosion expected. .OTHER STORM EFFECTS... Another 3 to 5 inches of additional rainfall is possible within as the center of STY Sinlaku continues moving northwest towards the Marianas. $$ Schank