More than 30,000 customers were without power Monday afternoon in Northern Virginia as heavy storms rolled across the D.C. region, downing trees and power lines.

Dominion Energy outage maps show thousands of customers without power in Fairfax County. Areas north of I-66 were particularly hard hit, with about 10,000 people without power near Centreville, and about 4,200 people without power near Herndon. The city hall of Falls Church was also without power, authorities said.

There were also outages in Maryland, including about 3,800 customers without power in Prince George’s County, according to PepCo outage maps. Montgomery County officials said they were responding to a wide variety of storm-related calls. There were reports of several homes damaged by downed trees, and a restaurant and a home on fire after possible lightning strikes.

“Units are responding to a good number of reports of wires, trees, branches down … storms county-wide, some areas w/ heavy downpours,” Montgomery County Fire spokesman Pete Piringer tweeted at around 4 p.m.

The National Weather Service declared a severe thunderstorm warning for Prince George’s County until 4:45 p.m.

In downtown D.C., a tree fell in the 1000 block of Vermont Avenue NW, blocking traffic for a short time until it was cleared.

“It managed to fall pretty neatly between two parked cars, we were lucky no one got hurt,” Michelle Dover, who works in the area, said in an email.