Heavy rainfall remains possible through Wednesday night; thunderstorm advisory in effect


The National Weather Service (NWS) Guam Weather Forecast Office provided a hydrologic outlook for Guam, with NWS advising that the upper-level trough expected to bring heavy rainfall to the Marianas this week remains a bit farther north than expected.

The trade-wind troughs, however, will continue to affect the region. These troughs are expected to bring occasional showers to Guam and Rota Tuesday night through Thursday. Heavy rainfall does remain a possibility.

Localized flooding remains a possibility in low-lying and poor drainage areas. Residents and visitors are advised to take precautionary actions now by clearing drainage areas and unblocking clogged storm drains in your area to minimize the chance of flooding.

A thunderstorm advisory is in effect for the Guam International Airport until 7 p.m. this evening. Thunderstorms are possible within 20 nautical miles of the airport. Seek shelter if lightning is seen or thunder is heard.

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) remind the community to be alert for additional advisories from NWS.

Visit the following links for the latest advisory information:
· NWS Website: https://www.weather.gov/gum/
· NWS Facebook: https://www.facebook.com/NWSGuam/
· GHS/OCD Website: https://ghs.guam.gov/
· GHS/OCD Facebook: https://www.facebook.com/GHSOCD/

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.