Prepare for Possible Declaration of COR 4 on Thursday

The Office of the Governor, in conjunction with the Guam Homeland Security/Office of Civil Defense (GHS/OCD) and the National Weather Service (NWS), is closely monitoring weather and roadway conditions across the island. 

Governor Lourdes Leon Guerrero is scheduled to make a final decision in the early morning hours of Thursday, April 16, 2026, regarding the declaration of Condition of Readiness (COR) 4. 

JIC Release No. 27 - Hazardous Wind and Sea Conditions; Visitor Safety; Flights Suspended; Dialysis Center Updates; DYA GSYEP Update

Guam remains in Condition of Readiness (COR) 1. Heavy rain, damaging wind gusts, and hazardous sea conditions are expected to persist through the evening.

Visitor Safety
The Guam Visitors Bureau (GVB) and the A.B. Won Pat International Airport Authority (GIAA) remind all hotel and industry partners to provide visitors with updated information, including the following: 

    JIC Release No. 26 - Guam Remains in COR 1; Slow-Moving Sinlaku Extends Guam’s Peak Conditions; Emergency Shelter Update; Telecommunication Update

    Guam remains in Condition of Readiness (COR) 1. The island continues to experience prolonged weather effects, including heavy rain bands and damaging wind gusts, which are expected to persist through the evening. Assessments will be made Thursday morning to determine if it's possible to move to Condition of Readiness (COR) 4. To ensure public safety and allow emergency responders to conduct essential assessments, residents must remain indoors and off the roads until the "All Clear" is officially announced and the island transitions to COR 4.


    JIC Release No. 25 - Road Hazards Update; Utilities Update; Telecommunications Update

    Road Hazards Update

    At 11:55 a.m., the Guam Police Department (GPD) reported Chalan Palasyo (Snake Road), Maina is impassable due to a downed tree. The community is reminded to remain indoors until Condition of Readiness (COR) 4. If movement is absolutely necessary, use extreme caution. Be aware of dangerous hazards, including downed power lines, damaged trees, and debris in the roadway. Assume all downed lines are live and dangerous.

     

    JIC Release No. 24 - Guam Remains in COR 1; DPW Crews Continue Clearing Major Roadways; GPD Reports Road Hazards; GSWA Update; DPR Update

    Tropical Storm Force Winds Continue on Guam

    From the latest brief from the National Weather Service, the eye of Typhoon Sinlaku has only moved 25 miles over the last 14 hours, which further highlights just how slow-moving the system has been, making it an extended period event. 

    JIC Release No. 23 - Sinlaku Slow-Moving; Extended Period of Heavy Winds Expected; Remain Indoors

    Guam remains in Condition of Readiness (COR) 1. Joint Region Marianas remains in TCCOR 1E, indicating destructive winds of 50 knots (57 mph) or greater are occurring. Installation access points are closed, with the exception of U.S. Naval Hospital Guam for emergency department access only. REMAIN INDOORS UNTIL COR 4 IS ANNOUNCED.

    Sinlaku is slow moving. This is an extended period event. Guam can expect:

    JIC Release No. 21 - Slow-Moving Sinlaku Extends Guam’s Peak Conditions; Schools Remain Closed Tomorrow; Utilities Update

    Guam remains in Condition of Readiness (COR) 1. Joint Region Marianas remains in TCCOR 1E, indicating destructive winds of 50 knots (57 mph) or greater are occurring. Installation access points are closed, with the exception of U.S. Naval Hospital Guam for emergency department access only. REMAIN INDOORS UNTIL COR 4 IS ANNOUNCED.

    As NWS forecast, peak conditions continue into Tuesday night. Rainbands are currently moving over Guam.  Gusts between 70-80 mph have already been recorded on the island, and may persist until Wednesday morning.

    JIC Release No. 20 - Damaging Winds Persist as Super Typhoon Sinlaku Passes North of Guam; Utilities Update

    Guam, and the respective military bases, remain in Condition of Readiness (COR) 1, and Tropical Cyclone Condition of Readiness (TCCOR) 1. REMAIN INDOORS UNTIL COR 4 IS ANNOUNCED.

    Guam remains under both a tropical storm warning and a typhoon watch. As of 2 p.m., Sinlaku was located 14.6N and 146.1E, 100 miles northeast of Guam. It is moving northwest at 9 mph with maximum sustained winds of 155 mph. Rainbands continue to move over Guam. Gusts between 70-80 mph have already been recorded on Guam. 

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