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.

8:35 a.m. Tropical Depression Nuri Expected to Weaken Through Tonight

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Tropical Depression Nuri, formerly Invest 95W. As of 7 a.m., Nuri was located 11.0N and 138.8E, 115 miles north-northeast of Yap, 440 miles west-southwest of Guam. It is moving slowly east-northeast with maximum sustained winds of 35 mph. It is expected to maintain this general course through Friday, as it approaches and then passes through the Northern Marianas, near or north of Anatahan.

Read more about 8:35 a.m. Tropical Depression Nuri Expected to Weaken Through Tonight

2:40 p.m. Invest 95W Upgraded to Tropical Depression Nuri

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor what is now Tropical Depression Nuri, formerly Invest 95W. As of 1 p.m., Nuri was located 10.4N, 136.9E, 100 miles northwest of Yap, about 575 miles west-southwest of Guam. It was moving southwest, with maximum sustained winds of 35 mph. It is expected to intensify through tonight, possibly becoming a tropical storm overnight, before gradually weaking beginning Friday.

Read more about 2:40 p.m. Invest 95W Upgraded to Tropical Depression Nuri

5:15 p.m. Tropical Disturbance Developing Southwest of Guam to Track Toward Marianas

The National Weather Service (NWS) Guam Weather Forecast Office continues to monitor Invest 95W located north-northwest of Yap. The system is expected to strengthen into a tropical depression as it moves northeast. As currently forecast, 95W will track through, or near the Marianas to the northwest, in the coming days.

Periods of heavy rainfall and isolated thunderstorms are possible through the next 48 to 72 hours. Heavy showers and thunderstorms may bring wind gusts of 35 to 45 mph.

Read more about 5:15 p.m. Tropical Disturbance Developing Southwest of Guam to Track Toward Marianas

11:30 a.m. Flood Advisory in Effect; Hazardous Surf and Seas Remain

The National Weather Service (NWS) Weather Forecast Office Guam issued a flood advisory in effect for Guam until 1:15 p.m. this afternoon. Additional rainfall amounts of 1 to 2 inches are expected resulting in minor flooding.

The community is advised to take the following actions:

Read more about 11:30 a.m. Flood Advisory in Effect; Hazardous Surf and Seas Remain

11:45 a.m. Flood Advisory in Effect; Practice Caution in Heavy Rain

The National Weather Service (NWS) Guam Weather Forecast Office issued a flood advisory for Guam until 12:30 p.m. this afternoon. Urban and small stream flooding caused by excessive rainfall is expected. Additional rainfall amounts of 1 to 2 inches are expected resulting in minor flooding.

Read more about 11:45 a.m. Flood Advisory in Effect; Practice Caution in Heavy Rain

2:40 p.m. Flood Watch in Effect Tonight through Tuesday Morning; Heavy Rain Possible

The National Weather Service (NWS) Guam Weather Forecast Office advised a broad tropical disturbance is expected to interact with a shear line, impacting the Marianas starting late tonight, through the weekend, and much of the coming week.

Several rounds of heavy to very heavy rainfall will be possible during this time. This could lead to 5 to 10 inches of rain across the Marianas.

Heavy rainfall could produce flooding of roadways and low-lying areas. Residents and visitors are advised to take the following precautionary actions:

Read more about 2:40 p.m. Flood Watch in Effect Tonight through Tuesday Morning; Heavy Rain Possible

1:00 p.m. Heavy Rain and Strong Wind Gusts Possible This Weekend into Next Week

The National Weather Service (NWS) Guam Weather Forecast Office issued a hydrologic outlook for Guam, Rota, Tinian, and Saipan. Periods of heavy rainfall may develop this weekend into early next week. Currently, a broad and weak circulation is forming southwest of Chuuk and is expected to slowly head west-northwest towards the Marianas the next several days.

Read more about 1:00 p.m. Heavy Rain and Strong Wind Gusts Possible This Weekend into Next Week

No Direct Physical Threat to Guam Amid International Situation; Awareness Remains Key

Agana Heights, Guam — The Office of Guam Homeland Security and the Office of Civil Defense (OHS-OCD) is closely monitoring the evolving international situation referred to as “Operation Epic Fury,” a series of escalating military actions and counteractions involving the United States, Israel, and Iran in the Middle East.

Read more about No Direct Physical Threat to Guam Amid International Situation; Awareness Remains Key

12:30 p.m. Press Release - High Surf Advisory and High Risk of Rip Currents in Effect

For Immediate Release
March 3, 2026, 12:20 p.m. (ChST)

High Surf Advisory and High Risk of Rip Currents in Effect

The National Weather Service (NWS) Weather Forecast Office Guam has the following advisories in effect:

Read more about 12:30 p.m. Press Release - High Surf Advisory and High Risk of Rip Currents in Effect

7:55 a.m. Flash Flood Warning Now in Effect, Practice Caution

The National Weather Service (NWS) Weather Forecast Office Guam issued a flash flood warning now in effect for Guam until 9:15 a.m. this morning. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 2 to 4 inches are possible. Flash flooding is ongoing or expected to begin shortly.

The community is advised to take the following actions:

Read more about 7:55 a.m. Flash Flood Warning Now in Effect, Practice Caution

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Department of Homeland Security (DHS) Definition of Terrorism

June 2018 is Typhoon Preparedness Month

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