The Monongahela River is expected to rise more than 5 feet by Wednesday.
The melting snow mixed with Tuesday’s rainfall is causing the river to surge, says John Darnley with the National Weather Service in Pittsburgh.
“All the local streams and tributaries are basically bank-full,” he said. “And so you should be careful if you’re driving in a low-lying area next to a stream that normally floods.”
Water from the Allegheny River could reach the 10th Street Bypass, but the rise shouldn’t affect portions of the Parkway East downtown.