Severe storm warnings for areas near Frederick and Leesburg
Torrential rain, frequent lightning and damaging winds are possible hazards.
4:40 p.m. — Storms warnings extended east into Frederick and Leesburg. Line of storms should near Beltway by 5:45 or 6 p.m.
Radar shows a long, continuous line of strong to severe storms from east of Hagerstown to east of Front Royal bearing down on Thurmont, Frederick, Leesburg and Middleburg in the next 30 minutes. Several severe thunderstorms warnings have been issued along this line through between 5 and 5:15 p.m. and will likely be extended eastward.
These storms contain frequent lightning, very heavy rain and may unleash localized bursts of wind to 60 to 70 mph. Some of them tower up to 55,000 feet high.
At their current rate of movement, they should approach the Beltway in a little over an hour.
4:10 p.m. — Broken line of severe storms along Interstate 81
Radar shows a broken line of severe storms nearing or arriving along the Interstate 81 corridor from Hagerstown to just west of Front Royal. Severe thunderstorms warnings have been posted for Hagerstown, Martinsburg, Winchester and Strasburg, mainly for potentially damaging winds.
These storms, which are moving east and northeast between 25 and 50 mph, should reach the Rt. 15 corridor from Frederick to Leesburg by around 5 p.m., and could be closing in on the Beltway and Washington’s northern suburbs between 5:30 p.m. and 6:30 p.m. We’ll keep you posted.
https://www.washingtonpost.com/weather/2021/06/21/severe-storms-dc-md-va/?