A severe thunderstorm watch is in effect for areas east of the Blue Ridge Mountains until 9 p.m. A “watch” means that conditions are favorable for development of severe weather including large hail and damaging winds.

The region also is expected to experience afternoon and evening thunderstorms Tuesday through Friday, according to the National Weather Service.

Forecast for Lexington Park, MD

Late Afternoon: Scattered showers and thunderstorms. Some storms could be severe, with large hail, damaging winds, and frequent lightning. Partly cloudy, with a high near 93. South wind around 9 mph. Chance of precipitation is 50%.

Tonight: Scattered showers and thunderstorms before midnight. Some storms could be severe, with large hail, damaging winds, and frequent lightning. Partly cloudy, with a low around 74. South wind between 6 and 9 mph becoming calm. Chance of precipitation is 50%.

Tuesday: Partly cloudy, with a high near 95. Heat index values as high as 100. North wind between 3 and 9 mph.

Tuesday Night: A slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 76. Southeast wind 7 to 11 mph becoming southwest. Chance of precipitation is 20%.

Wednesday: A chance of showers and thunderstorms, mainly after noon. Partly cloudy, with a high near 91. West wind between 9 and 14 mph. Chance of precipitation is 40%.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Chance of precipitation is 30%.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

Friday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 40%.

Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

Saturday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 30%.

Saturday Night: Partly cloudy, with a low around 68.

Sunday: Partly cloudy, with a high near 81.

Sunday Night: Mostly clear, with a low around 68.

Monday: Mostly sunny, with a high near 86.