Up To 4 Inches Of Rain Possible During Flash Flood Watch In MD: National Weather Service

MARYLAND — Up to 4 inches of rain may fall in parts of Maryland over the next day, according to the National Weather Service, which placed 12 jurisdictions under a flash flood watch Thursday.

Heavy rain will likely start falling late Wednesday night and be the most widespread through Thursday afternoon.

The flash flood watch takes effect at 5 a.m. and runs through 2 p.m. on Thursday, Sept. 23.

About 1 to 2 inches of rain will likely fall on average, with up to 4 inches of localized amounts possible, according to the National Weather Service.

Rain falling on increasingly saturated ground may result in flash flooding, officials advised. Flash flooding is a rapid rise in water level that may be life-threatening.

These areas are under the flash flood watch from 5 a.m. to 2 p.m. Thursday, Sept. 23:

• Anne Arundel County
• Baltimore City
• Baltimore County
• Calvert County
• Carroll County
• Cecil County
• Charles County
• Harford County
• Howard County
• Montgomery County
• Prince George's County
• St. Mary's County

These towns are included in the watch, officials said: Elkton, Jarrettsville, Westminster, Damascus, Silver Spring, Bethesda, Reisterstown, Columbia, Germantown, Rockville, Baltimore, Eldersburg, Ellicott City, Cockeysville, Lisbon, Gaithersburg, and Aberdeen.

Northern Virginia and Washington, D.C. are also under the flash flood watch.

Showers and thunderstorms with damaging wind gusts and an isolated tornado could occur Thursday, according to a hazardous weather outlook for the region.

See the latest forecast from the National Weather Service.