Authorities in Pittsburgh say three people have died in flash floods after heavy rains submerged cars.

Rescue crews used inflatable boats Friday to reach other stranded drivers, some of whom say the waters near the city zoo were 6 feet deep. Some drivers had to swim to safety from their cars.

Station KDKA reports the area received about 3 inches of rain in an hour.

The flash floods hit an area that experienced serious flooding last month, and the road is currently closed to traffic.

Earlier Friday, another storm caused power outages that left most of the University of Pittsburgh without electricity.