 Do watch out here. You're going to hit this, and the visibilities are really going to go down as you get into that heavy rainfall. To the south there, nothing severe, but very strong thunderstorms affecting much of the central and southern portions of Fauquier County, too, all moving to the northeast between 15 and 25 miles an hour. Keep in mind, the atmosphere is unstable. It is hot and muggy across the region. So a severe thunderstorm watch goes until 10 o'clock this evening. Heat advisories and excessive heat warnings will expire at 8 o'clock.