Thunderstorm Advisory in Effect

Thunderstorm Advisory in Effect

The National Weather Service (NWS), Weather Forecast Office Guam issued a short term forecast for the coastal waters of Guam and Rota. Scattered showers and a few thunderstorms are developing across the coastal waters of Guam, with additional showers and thunderstorms developing east of Rota.

Mariners can expect dangerous cloud to water lightning, brief periods of heavy rainfall reducing visibilities to 3 miles or less, and wind gusts to 25 kt.

thunderstorm advisory is in effect for the Guam International Airport until 6 p.m. Thunderstorms are possible or occurring within 20 nautical miles of the airport. Be alert and take precautions as required. If lightning is seen or thunder is heard, get indoors or inside a vehicle. Boaters should get below deck, and do not touch metal parts.

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) advise the community to practice caution if traveling in rainy conditions.

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