NWS issues severe thunderstorm warning; flood advisory in effect

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The National Weather Service (NWS), Weather Forecast Office Guam issued a severe thunderstorm warning for Guam.  Guam can expect thunderstorms in the following villages: Dededo, Tamuning; Yigo, Mangilao; Chalan Pago-Ordot; Barrigada; Yona; Hagatna Heights; Andersen AFB; Mongmong-Toto-Maite;  Sinajana; Asan; Piti; and Santa Rita.

If driving, be alert for reduced visibility due to heavy rainfall and ponding of water along roadways. If you see lightning or hear thunder, seek shelter indoors.

Boaters can expect visibility down to a quarter of a mile with heavy rainfall. If thunder is heard or lightning is seen, boaters are advised to get below deck and avoid touching metal parts. For those near the shores, return to harbor until weather has improved.

Boaters can expect visibility down to a quarter of a mile with wind gusts 35 to 40 knots in heavy showers. If thunder is heard or lightning is seen, boaters are advised to get below deck and avoid touching metal parts. For those near the shores, return to harbor until weather has improved.

thunderstorm advisory is in effect for the Guam International Airport until 6:00 p.m. this evening. Thunderstorms are expected within 20 nautical miles of the airport. Be alert and take precautions as required.

An urban and flood advisory is in effect for Guam until 2:00 p.m. A flood advisory means river or stream flows are elevated or pending water in urban or other areas is occurring or is imminent. Up to 1 inch of rain has already fallen. An additional 1-3 inches is expected.

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

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