Thunderstorms pummeled the region Sunday, capping off a weekend of extreme weather that included record-high temperatures across the area Saturday.

The storms blew down trees and wires, which hit houses, blocked roadways and led to at least one death in the area.

A woman was killed when a tree fell on her minivan on Rhode Island Avenue near Odessa Road at about 3:30 p.m., according to Mark Brady, spokesman for Prince George's County fire and emergency services.

One other woman was in the vehicle at the time, and was taken to a hospital.

Overall, the weekend was busy for emergency workers.

Crews removed several overturned boats from the water near the Thompson Boat Center, said Pete Piringer, spokesman for D.C. fire and emergency services. No injuries were reported in those incidents.

Fallen trees and wires were reported throughout the region, including downed wires that set several vehicles on fire on the 1600 block of Montana Avenue NE.

Several people were trapped when a tree fell on their home on the 3500 block of Cumberland Street NW on Sunday afternoon, Piringer said.

Power outages also hit the area, with Pepco reporting more than 266,000 affected customers and Dominion recording more than 71,000 outages early Sunday evening. Montgomery County was hit especially hard, with more than 185,000 homes losing power during the storm.

Only scattered outages were recorded during the heat Saturday and Sunday, said Mary-Beth Hutchinson, a Pepco spokeswoman.

But the heavy rain, strong winds and downed trees with full foliage made the storm damaging, she said. During the storm, Montgomery County Fire and Rescue recorded more than 300 emergency calls in a two-hour period, and dispatchers around the region said their communications centers were swamped.

The storms came during a second day of especially hot temperatures. The high reached 99 degrees at Ronald Reagan Washington National Airport, after a record-high 101 was recorded there Saturday.

During the Boy Scout parade Sunday, emergency workers treated more than 100 people, taking six to the hospital, according to D.C. Fire and Emergency Medical Services.

But some relief is on the horizon. A cold front was expected to move across the region Sunday night, said Bryan Jackson, a National Weather Service meteorologist. That means high temperatures should drop to about 90 early this week, he said.

ebabay@washingtonexaminer.com