Flash Flood Watch Begins Late Wednesday: Maryland Weather Forecast

Heavy rainfall and flash flooding are possible across the Baltimore/Washington, D.C., metro region beginning overnight late Wednesday, according to the National Weather Service.

A flash flood watch has been issued across the area from 2 a.m. Thursday until 8 a.m. Friday morning.

Beginning late Tuesday, clouds will increase. Rain is expected to begin Wednesday afternoon, according to the weather service, becoming heavier Wednesday night and continue throughout Thursday.

Periods of heavy rain, with amount of 3 inches to 5 inches are expected, with locally heavier amounts in areas of repeated activity.

"The potential exists for flash flooding of small streams, creeks and urban areas," according to the weather service statement. "Especially in areas of repeated activity."

Residents are encouraged to continue monitoring local forecasts for updates.

The rain wraps up Friday night, making way for a perfect weekend with sunny skies and highs in the mid-70s.

Here's a look at the detailed forecast for Maryland:

• Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Northwest wind around 6 mph becoming south in the afternoon.
• Tuesday night: Partly cloudy, with a low around 59. Southeast wind around 6 mph becoming light and variable in the evening.
• Wednesday: A chance of showers, then showers and possibly a thunderstorm after 2 p.m. High near 73. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Wednesday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
• Thursday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%.
• Thursday Night: Showers and possibly a thunderstorm before 2 a.m., then showers likely. Low around 62. Chance of precipitation is 80%.
• Friday: Showers likely, mainly before 8 a.m. Partly sunny, with a high near 74. Chance of precipitation is 60%.
• Friday Night: A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
• Saturday: Mostly sunny, with a high near 75.
• Saturday Night: Partly cloudy, with a low around 60.
• Sunday: Mostly sunny, with a high near 76.

Information posted early Tuesday by the NWS on Twitter:

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