JIC Release No. 10 - Guam to Move to COR 1 Tuesday at 1 PM


JIC Release No. 10 - Guam to Move to COR 1 Tuesday at 1 PM

Governor Lou Leon Guerrero anticipates placing Guam in Condition of Readiness (COR) 1 at 1 p.m., Tuesday, May 23, 2023. At COR1, destructive winds are possible within the next 12 hours.

Concurrently, Joint Region Marianas (JRM), Naval Base Guam (NBG), Andersen Air Force Base (AAFB), and Marine Corps Base Camp Blaz (MCBCB) will also be in Tropical Cyclone Condition of Readiness (TCCOR) 1 at 1 p.m., Tuesday, May 23, 2023. All Andersen gates will be closed at 1 p.m. on Tuesday, May 23. All Navy Base Guam gates will be closed at 10 p.m. on Tuesday, May 23. The time for gate closure is subject to change based on weather conditions. For installation-specific operations or questions, please consult the respective installation Facebook page or reach out to the Public Affairs Officer.

As of 7 p.m., Typhoon Mawar was located 9.8 degrees north latitude and 146.9 degrees east longitude, about 290 miles south-southeast of Guam, and 375 miles south-southeast of Saipan, moving north-northwest at 7 mph, with maximum sustained winds of 105 mph. 

What to Expect:

On its current track, the system is expected to bring tropical storm force winds to Guam as early as Tuesday afternoon, with the possibility of typhoon force winds of 81 - 110 mph by Wednesday morning. Heavy rainfall is likely to develop tonight through the next few days. Rainfall amounts of 8 to 15 inches are possible with locally higher amounts. A slowing forward speed could lead to much higher rainfall totals. 

Complete Preparedness Activities:

All preparedness activities should be completed before the expected onset of damaging winds. 

  • Stay up to date – monitor local news, the National Weather Service and the Joint Information Center;

  • If you have not done so, put up shutters and secure windows and doors now. Do not wait until tomorrow;

  • Clear loose debris around your yard and store any items that may become airborne during heavy winds such as canopies, tarps and trampolines;

  • Have emergency preparedness kit readily available, with battery operated radio, flashlights and extra batteries;

  • Secure important documents such as birth certificates, tax papers, and insurance documents and keep copies in a water-proof bag;

  • Be prepared to unplug appliances and ensure energy breakers are switched off if island power fails due  to heavy winds and rains expected;

  • Ensure pets are part of your emergency plans (i.e. have enough supplies, bring them indoors, plan to keep them with a loved one or family member);

  • Do not camp, park, or hike along streams, rivers. These areas can flood quickly and with little warning;

  • Stay out of the water;

  • Gas your vehicles and get fuel for your generators;

  • If you are done securing your home and know someone elderly, living with a disability, or who will otherwise need assistance, please see how you can help them. If you know a neighbor or family member who has no way of getting information about the storm, please provide them with updates.

Once the island is in COR 1, the community is advised to remain indoors until COR 4 is announced.

Shelter Information:

The Guam Department of Education (GDOE) will open nine (9) emergency shelters at 8 A.M. Tuesday, May 23. Emergency shelters will NOT be open before 8 A.M. tomorrow. Do not attempt to go to any emergency shelter before then.  

The following emergency shelters open at 8 a.m. Tuesday, May 23:


  • AsTumbo Elementary School

  • Maria A. Ulloa Elementary School

  • Machananao Elementary School

  • Upi Elementary School 

  • Wettengel Elementary School


  • B.P. Carbullido Elementary School 

  • George Washington High School


  • Talo’fo’fo Elementary School

  • Merizo Martyrs Memorial School

See JIC Release No. 7 for information on what to bring, transportation, and rules and regulations for the shelters. 

Visit the following links for the latest advisory information:

For more information, contact the Joint Information Center at (671) 478-0208/10 or the GHS/OCD 24/7 watch desk at (671) 475-9600.




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June 2018 is Typhoon Preparedness Month