Press Release - Flood Advisory in Effect this Evening


Press Release - Flood Advisory in Effect this Evening

Flood Advisory in Effect this Evening

The National Weather Service (NWS) Guam Weather Forecast Office issued a flood advisory, in effect until 10 p.m. this evening for central and southern Guam, along and south of Cross Island Road. Heavy rain and thunderstorms will cause urban and small stream flooding. Between 0.5 and 1 inch of rain has already fallen. Additional rainfall amounts of 1 to 3 inches are expected.

Some locations that will experience flooding include Mangilao, Chalan Pago-Ordot, Yona, Hagatna Heights, Talofofo, Mongmong-Toto-Maite, Sinajana, Inarajan, Asan, Merizo, Piti, Santa Rita, and Umatac.
Residents and visitors are advised to take the following precautionary actions:
  • Be aware of your surroundings and do not drive on flooded roads.
  • If driving, be alert for low visibilities in heavy rain;
  • Slow down where water is ponding on the road;
  • Turn Around, Don’t Drown. Avoid walking or driving through flood waters. Just 6 inches of moving water can knock you down, and 2 feet of water can sweep your vehicle away;
  • Do not camp, park, or hike along streams and rivers. These areas can flood quickly and with little warning.

A thunderstorm advisory is in effect for the Guam International Airport Authority until 9:45 p.m. this evening. Thunderstorms are possible or occurring within 20 nautical miles of the airport. Be alert and take precautions as necessary. If lightning is seen or thunder is heard, seek shelter indoors.

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) remind the community to practice caution while traveling in heavy rain, driving below the speed limit and allowing enough braking distance between vehicles.

Visit the following links for the latest advisory information:
For more information, contact GHS/OCD Public Information Officer Jenna G. Blas at (671) 489-2540 or via email at


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June 2018 is Typhoon Preparedness Month