A brewing tropical disturbance is expected to pass through the Marianas over the weekend and is expected to bring heavy rain.
Just a week after Typhoon Mangkhut, another tropical disturbance was seen forming off the coast of the Marianas and is expected to pass through the Marianas Friday through Monday.
According to the National Weather Service in Guam, the developing tropical disturbance and its associated monsoon trough will gradually drift west-northwestward over the Marianas. These features will generate showery conditions with heavy downpours beginning as early as Friday evening through Monday night.
The forecast shows rainfall amounts of up to 10 inches over the Marianas by Monday evening, with substantially higher amounts just west of the coastal waters as the developing circulation slowly moves northward.
If the circulation makes a slight shift to the east, it is expected to bring rainfall amounts in excess of 20 inches to the islands.
Flood watches and advisories will be issued when necessary.
Heavy downpours could produce flooding in low-lying areas and flash flooding near bodies of water.
The Homeland Security and Emergency Management Office is urging the community to take precautionary measures as excessive rainfall is expected in the area.
Those living in areas prone to flooding should be prepared to take action should flooding develop as a result of the heavy rainfall. Clear any debris around drainage areas.
Individuals should not walk, swim, or drive through flood waters. Just six inches of fast-moving water can knock you down, and one foot of moving water can sweep a vehicle away.
Individuals should also avoid wading in floodwater as it may contain dangerous debris and be contaminated. Downed power lines can also electrically charge the water.
Roadway safety is also highly advised as heavy rain is expected to occur throughout the Marianas.