Flood Warning Extends Across Southwestern Pennsylvania Region

A flood warning remains in effect until 4:30 p.m. Sunday for parts of southwestern Pennsylvania after heavy thunderstorms caused localized flooding concerns, with the National Weather Service warning residents in several counties as rainfall reached up to 3 inches.

The National Weather Service issued the warning for Allegheny County, central Washington County, western Westmoreland County, southwestern Butler County and central Beaver County, according to the agency.

Radar showed heavy thunderstorm rain continuing in the morning, with 2 to 3 inches already recorded. The NWS said streams were rising from runoff and urban drainage systems could take several hours to clear water.

Some fire officials reported flooded roads, while communities at risk included Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, McCandless Township, Monroeville, Cranberry, Moon Township, Greensburg, McKeesport, Aliquippa, Canonsburg and Monaca.

The National Weather Service advised motorists to avoid flooded roads and use alternate routes, warning that driving through floodwaters can be dangerous.

Liana Lupo, a meteorologist at the NWS in Moon, said rainfall conditions were expected to improve later in the day.

"We’ll really start to see things dry out" said Liana Lupo, a meteorologist at the NWS in Moon.

Lupo said the wind had limited impact on the weekend weather despite an earlier wind advisory. Gusts of 35 miles per hour were recorded at Pittsburgh International Airport.

Forecast conditions indicated temperatures could reach 80 degrees on Tuesday before highs decline later in the week, according to Lupo.