Governor Lou Leon Guerrero and Rear Adm. Brett Mietus, anticipate placing Guam, and the respective military bases, in Condition of Readiness (COR) 1, and Tropical Cyclone Condition of Readiness (TCCOR) 1 at 4 p.m. this afternoon, April 13, 2026. At COR1, destructive winds are possible within the next 12 hours.
JTF-M, as the Department of War's supported command for Defense Support of Civil Authorities (DSCA) in the region, is actively coordinating with federal, territorial, and local partners to ensure a rapid and effective response if requested.
Once the island is in COR 1, remain indoors until COR 4 is announced.
Complete Preparedness Activities:
All preparedness activities should be completed before this evening with the expected onset of damaging winds.
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Remain indoors from COR 1 until COR 4 is announced;
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Stay Out of the Water;
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Seek Emergency Shelter
Guam remains under both a tropical storm warning and a typhoon watch. The threat of typhoon conditions affecting Guam have decreased with recent northward shifts of Super Typhoon Sinlaku’s track the past 24 hours. While the threat of typhoon force winds has significantly diminished, this remains a serious weather event. As of 10 a.m., Sinlaku was located 12.2N and 148.9E, 290 miles east-southeast of Guam. It is moving northwest at 9 mph with maximum sustained winds of 180 mph.
Guam can expect an extended period of tropical storm force winds (39 - 73 mph) from Monday evening through Wednesday. The onset of tropical storm force winds are expected to reach Guam, Rota, Tinian, and Saipan tonight. Typhoon force winds are expected to start reaching Rota, Tinian, and Saipan Tuesday or Tuesday afternoon. The latest forecast track has the storm passage still expected near or over Tinian and Saipan.
Stay Out of the Water; Conditions are Life Threatening
The community is reminded to remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. The following advisories remain in effect:
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High Surf Warning until 6 p.m. Thursday - dangerously large breaking waves of 10 to 15 ft for Guam and 15 to 25 ft for Rota, Tinian and Saipan, are expected.
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Coastal Flood Watch through Wednesday afternoon - significant coastal flooding 1 to 3 ft for Guam, and 3 to 7 ft for Rota, Tinian, and Saipan are possible.
The GBHWC Suicide & Crisis Lifeline remains operational 24/7. The community may call or text the hotline at 988, or chat online at 988lifeline.org.
Visit the following links for the latest information:
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NWS Website: https://www.weather.gov/gum/
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NWS Facebook: https://www.facebook.com/NWSGuam/
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GHS/OCD Website: https://ghs.guam.gov/
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GHS/OCD Facebook: https://www.facebook.com/GHSOCD/
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JRM Facebook: https://www.facebook.com/jrmguam
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JTF-M Facebook: https:www.facebook.com/1CdEchVcDs/
For more information, contact the Joint Information Center at (671) 478-0208/09/10