Guam Homeland Security - Office of Civil Defense

X Flooding is a temporary overflowing of water onto land that is normally dry. Flooding may happen with only a few inches of water, or it may cover a house to the rooftop. There are many possible causes of floods including heavy rain, coastal storms and storm surge, waterway overflow from being blocked with debris, or overflow of levees, dams, or waste water systems. Flooding can occur slowly over many days or happen very quickly with little or no warning, called flash floods.

To learn more, visit https://www.ready.gov/floods

Wildfire

Regularly clean the roof and gutters.
Maintain an area approximately 30’ away from you home that is free of anything that will burn, such as wood piles, dried leaves, newspapers and other brush.
Connect garden hoses long enough to reach any area of the home and fill garbage cans, tubs, or other large containers with water.
Review your homeowner's insurance policy and also prepare/update a list of your home's contents.

Fire Weather

Turn on your TV/radio. You’ll get the latest weather updates and emergency instructions.
Know where to go. If you are ordered to evacuate, know the route to take and have plan of where you will go. Check-in with your friends and family.
Keep your car fueled, in good condition, and stocked with emergency supplies and a change of clothes.

Drought

Conserve water

Take shorter showers.

Turn off the water while brushing your teeth or shaving.
Run the washer less frequently and only when you have a full load.
Water your lawn less frequently and do so when the temperature is cooler in the early morning or late evening.
When you run the tap to heat or cool water, keep a pitcher to store the water and use it to water plants.
Avoid washing your car.

Practice fire prevention

Don't set off fireworks when conditions are dry.
Deposit cigarette butts in the proper receptacle to avoid starting a
Pour water over camp fires and backyard fire pits to ensure they are completely out before leaving them unattended.

Follow directions from local officials. If there are restrictions on water usage, be sure to heed them.

To learn more, visit https://www.ready.gov/wildfires and https://www.ready.gov/drought

X
Typhoons/Hurricanes are massive storm systems that form over the water and move toward land. Threats from typhoons/hurricanes include high winds, heavy rainfall, storm surge, coastal and inland flooding, and rip currents.

“Hurricanes” form in the Atlantic Northeast Pacific region and “Typhoons” form in the Northwest Pacific Region. These large storms are call cyclones in other parts of the world.

To learn more, visit https://www.ready.gov/hurricanes.

JIC Release No. 4 - Guam to Move to COR 2 at 5 p.m.; Governor Requests Pre-Landfall Emergency Disaster Declaration; Healthcare Update

Based on the recent weather brief received from the National Weather Service, Weather Forecast Office Guam, and to provide the community additional time to prepare, Governor Lou Leon Guerrero and Rear Adm. Brett Mietus anticipate placing Guam, and the respective military bases, in Condition of Readiness (COR) 2, and Tropical Cyclone Condition of Readiness (TCCOR) 2 at 5 p.m. this afternoon, April 12, 2026.

Read more about JIC Release No. 4 - Guam to Move to COR 2 at 5 p.m.; Governor Requests Pre-Landfall Emergency Disaster Declaration; Healthcare Update

JIC Release No. 3 - 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.

Read more about JIC Release No. 3 - Sinlaku Upgraded to a Typhoon; JRM Sets TCCOR 3

JIC Release No. 2 - Guam in COR 3; Stay Out of the Water; Prepare Now

Governor Lou Leon Guerrero placed Guam in Condition of Readiness (COR) 3 at 5 p.m., April 10, 2026. At COR 3, damaging winds of 39 mph or more are expected within 48 hours. Yesterday, Governor Lou Leon Guerrero signed Executive Order No. 2026-01 relative to declaring a state of emergency in anticipation of the approach of Tropical Storm Sinlaku.

Read more about JIC Release No. 2 - Guam in COR 3; Stay Out of the Water; Prepare Now

JIC Release No. 1 - Guam in COR 3 at 5PM, April 10; Prepare Now

Governor Lou Leon Guerrero anticipates placing Guam in Condition of Readiness (COR) 3 at 5 p.m., April 10, 2026. At COR 3, damaging winds of 39 mph or more are expected within 48 hours.

Read more about JIC Release No. 1 - Guam in COR 3 at 5PM, April 10; Prepare Now

9:00 a.m. Tropical Depression Upgraded to Tropical Storm Sinlaku; Prepare Now

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Tropical Storm Sinlaku, formerly known as Tropical Depression 04W, as it continues slowly toward the Marianas.

What to Expect

Read more about 9:00 a.m. Tropical Depression Upgraded to Tropical Storm Sinlaku; Prepare Now

5:20 p.m. Tropical Depression Continues toward the Marianas; Use the Next Few Days to Prepare

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Tropical Depression 04W, formerly known as Invest Area 90W as it continues toward the Marianas. 04W has become increasingly organized over the past 12 hours as it has slowly tracked northwestward. It is expected to continue in this direction toward the Marianas.

As of 4 p.m., 04W was located near 8.1 degrees north latitude and 152.1 degrees east longitude, about 50 miles north-northeast of Chuuk, 620 miles southeast of Guam, moving west at 5 mph, with maximum sustained winds of 30 mph.

Read more about 5:20 p.m. Tropical Depression Continues toward the Marianas; Use the Next Few Days to Prepare

11:50 a.m. 90W Continues to Organize as it Moves Toward the Marianas

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W. As of 4 a.m., 90W was located near 9.2 degrees north latitude and 152.4 degrees east longitude, about 80 miles north of Chuuk, 570 miles east-southeast of Guam, moving northwest at 6 mph, with maximum sustained winds of 18-23 mph. It is expected to maintain this general course with an increase in forward speed in the coming days as it steadily intensifies.

What to Expect

Read more about 11:50 a.m. 90W Continues to Organize as it Moves Toward the Marianas

6:35 p.m. Tropical Disturbance Continues to Track Toward Marianas

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W, a tropical disturbance, located near 6N and 153E, between Chuuk and Pohnpei. 90W is anticipated to move to the west-northwest potentially taking it anywhere from over the Marianas or a passage to the south of Guam.

Uncertainty Remains; Stay Updated for Changes

Read more about 6:35 p.m. Tropical Disturbance Continues to Track Toward Marianas

3:35 p.m. GHS/OCD to Conduct Retest of All Hazards Alert Warning System Sirens, April 7, at 3:45 PM

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) will conduct a retest of the All Hazards Alert Warning System (AHAWS) sirens today, April 7, 2026 at 3:45 p.m.

The retest is being conducted to assess operations. Residents, visitors and motorists surrounding the AHAWS sirens can expect to hear pre-scripted voice messaging announcing the start and end of the test, and the “Alert” tone.

Read more about 3:35 p.m. GHS/OCD to Conduct Retest of All Hazards Alert Warning System Sirens, April 7, at 3:45 PM

11:20 a.m. Tropical Disturbance Developing Southeast of Guam to Track Toward Marianas

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest Area 90W, a slowly consolidating tropical disturbance, located near 4N and 160E, south-southwest of Pohnpei. 90W is anticipated to move to the west-northwest potentially taking it anywhere from the east of Guam and toward the far northern Marianas, over/near Guam, or to the south of Guam.

Uncertainty Remains on Expected Impact; Stay Updated for Changes

Read more about 11:20 a.m. Tropical Disturbance Developing Southeast of Guam to Track Toward Marianas

26.7 C / 80 F

ABOUT GHS/OCD

ARE YOU READY?

PREPAREDNESS

DISASTER ASSISTANCE

OPERATIONS

CONTACT GHS/OCD

Wildfire

Fire Weather

Drought

Conserve water

Department of Homeland Security (DHS) Definition of Terrorism

June 2018 is Typhoon Preparedness Month

Pages