Flash Flood Watch in Effect for Most of Maryland (EXPIRED)

A flash flood watch is in effect for much of central Maryland until midnight.

Widespread showers and thunderstorms are expected Thursday afternoon and evening across the region, which has been saturated by heavy rainfall this past week.

“As little as one inch of rain in one hour could produce flash flooding,” the weather service reports.

The National Weather Service issued the watch for Baltimore, Anne Arundel, Prince George’s, Howard, Montgomery, Harford counties plus Baltimore City, the District of Columbia and parts of Virginia.

• Swift Water Rescue Reported in White Marsh
• 3 People Rescued from Van Stuck in Flood in Howard County

A flash flood watch means that conditions could develop that may lead to flash flooding, or a rapid rise in water level.

In some areas, a tornado watch is in effect until 9 p.m.