Update at 7:45 p.m. — Adding to the misery on the roads: more than 2,600 Dominion customers are without power in Arlington. Many of the outages are concentrated in the area of Route 50 and Carlin Springs Road. Several traffic lights are reported to be dark as a result.

Thanks to today’s heavy rain, and the resulting flooding in Alexandria, Fairfax County and the City of Falls Church, tonight’s commute can only be described as nightmarish.

Southbound I-395, westbound I-66 and westbound Columbia Pike are all still slow through Arlington, as of 7:00 tonight. Meanwhile, WTOP just reported that the Capital Beltway has been closed at Cameron Run in Alexandria, due to flooding across the roadway.

Due to the continued threat of flooding, local residents are being encouraged to stay off the roads if at all possible.