EF0 tornado in Loudoun County, Virginia

Additional minor and sporadic tree damage was noted in a

north-northeastward path, with several trees snapped and

uprooted and an instance of siding damage noted by a trained

spotter just east of South Lincoln Avenue. The tornado likely

lifted for a final time just northeast of the intersection of

East Frederick Drive and Sugarland Road in Sterling Park.

The National Weather Service would like to thank Fairfax and Loudoun

County Emergency Management Agency and the residents interviewed

for their assistance in this survey.

Cutoff low pressure was over the Ohio Valley. Another area of low pressure strengthened overhead on the occluded boundary. Warm and moist air from the south lead to an unstable atmosphere. Strong shear profiles were in place due to the cutoff low to the west. Strong lift associated with the developing low combined with strong shear and enough instability to produce severe thunderstorms and isolated tornadoes.