Joint Information Center - JIC Release No. 3

April 11, 2026, 6:45 p.m. (ChST) JR1009#03

Sinlaku Upgraded to a Typhoon; JRM Sets TCCOR 3

Guam remains in Condition of Readiness (COR) 3. At COR 3, damaging winds of 39 mph or more are expected within 48 hours. 

Joint Region Marianas set Tropical Cyclone Condition of Readiness (TCCOR) 3 at 10 p.m., April 11, for all military installations in anticipation of destructive winds. 

Joint Task Force–Micronesia remains fully postured to respond at a moment’s notice to provide Defense Support of Civil Authorities (DSCA) should a request for assistance be made. Our forces are trained, equipped, and ready—synchronized with local and federal partners—to deliver rapid, coordinated support when and where it is needed. 

What to Expect

Sinlaku has been upgraded to a typhoon as of this afternoon. A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan, meaning typhoon conditions, including winds of 74 mph or more, are possible within 48 hours.

As of 5 p.m., Typhoon Sinlaku was located 8.8N and 151.6E, about 95 miles north of Chuuk, 565 miles southeast of Guam. It is moving north-northeast at 5 mph, with maximum sustained winds of 85 mph. It is expected to make a turn toward the northwest with a slight increase in forward speed through Sunday as it heads toward the Marianas, possibly crossing Guam as a Category 3 or Category 4 typhoon, with maximum sustained winds of 130 mph or more. 

• Winds: expected to increase with conditions deteriorating sometime late Sunday with potential for Tropical Storm-Force winds of 39 mph around Monday morning, and potential for Typhoon-Force winds of 74 mph or more Monday evening into Tuesday morning.
  
  
• Rain: expected to produce 15 to 20 inches of rainfall between Sunday night and Wednesday for Guam. As showers are likely to persist, consistent rainfall is likely to produce flash floods and saturate the soils enough to increase the chance for mudslides over central to southern Guam.

Shelter Information will be Provided Tomorrow

The Guam Department of Education (GDOE) is preparing to open emergency shelters April 12, 2026. More information is forthcoming regarding locations, rules and regulations. Emergency shelters will NOT be open until the designated time is announced. 

Guam Behavioral Health and Wellness Center

The GBHWC Pharmacy will be open on Sunday, April 12 from 8am - 12pm. The Guam Behavioral Health and Wellness Center (GBHWC) Suicide & Crisis Lifeline remains operational 24/7. The community may call or text the hotline at 988, or chat online at 988lifeline.org.

GSWA Update

The Guam Solid Waste Authority (GSWA) facilities will be closed and trash collection services will be temporarily suspended effective Sunday, April 12, 2026 through Tuesday, April 14, 2026, unless otherwise announced by GSWA. 

Take Action Now

• Stay Out of the Water! Hazardous surf and seas remain.
  • High Surf Advisory (waves 8-12 ft.) until 6 p.m. Thursday
  • High Risk of Rip Currents for Guam, Rota, Tinian, and Saipan through Thursday afternoon
  • Small Craft Advisory for Guam, Rota, Tinian, and Saipan coastal waters (winds 20–25 kt; seas 9–13 ft)
• Plan for Emergency Shelter
  • If movement out of your home is necessary ahead of the storm, have a shelter plan now. Coordinate now with family and friends regarding relocation or plan for movement once the government of Guam emergency shelter locations are announced.
• Secure your home. Put up shutters or board windows to mitigate impact;
• Clear drainage areas and unblock storm drains to minimize flooding;
• Stay up to date with the latest information;
• Clear loose debris around your yard and store any items that may become airborne with heavy winds, such as canopies, tarps, and trampolines, before inclement weather arrives;
• Secure construction sites
• Take down signs
• Have an emergency kit prepared: Store enough food and water for your household for 7-10 days. Include medication, disinfectant supplies and pet supplies;
• Secure important documents such as birth certificates, tax papers, and insurance documents and keep copies in a water-proof bag;
• Review your emergency plan: If you do not have a plan, learn how to create an emergency plan; Have plans for your family members and pets. If you are a person with disabilities or a caregiver for elderly, you may need to take extra steps to plan for those additional needs.
• Get emergency alerts: Stay informed by having a weather alert radio, battery-operated, or hand-crank radio, where you can listen to emergency news;
• Gas your vehicles and get fuel for your generators;
• Pull cash from the ATM in case of power outages;
• Don’t drive through flood waters: Almost half of all flash flood deaths happen in vehicles. When in your car, look out for flooding in low-lying areas at bridges and at highway dips. As little as 6 inches of water may cause you to lose control of your vehicle.

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. 

 

JIC Release No. 3