NWS Issues Short Term Forecast; Practice Caution in Heavy Showers

NWS Issues Short Term Forecast; Practice Caution in Heavy Showers

The National Weather Service (NWS) Guam Weather Forecast Office issued a short-term forecast for Guam. Through 4:30 p.m., thunderstorms and periodic heavy showers will impact central and eastern Guam, and adjacent waters. Up to two inches of rain is possible.

Motorists are advised to be prepared for brief flooding of roads and lower visibilities under heavy downpours.

Mariners are reminded be cautious for visibilities down to half a mile and dangerous lightning. If showers persist longer than expected, a flood advisory will be issued.


If driving, be prepared for heavy rain and brief flooding of roads. If outdoors and lightning is seen or thunder is heard, find safe shelter in buildings or vehicles. Boaters should go below deck and avoid touching metal parts.


thunderstorm advisory is in effect for the Guam International Airport until 6:30 p.m. Thunderstorms are possible within 20 nautical miles of the airport.


The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) remind the community to practice extreme caution while traveling in rainy conditions, 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 jenna.g.blas@ghs.guam.gov.




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June 2018 is Typhoon Preparedness Month