Relentless downpours brought flooding from parts of Ohio to western Pennsylvania with Pittsburgh slammed Wednesday morning and midday.
Between 2 and 4 inches of rain fell on the Pittsburgh Tuesday evening into Wednesday morning. Some locations received 1 to 2 inches of rain in as many hours.
According to Chief Meteorologist Elliot Abrams, "It is like getting a 20-inch snowstorm in a couple of hours."
The steep hillsides around the city and its suburbs caused water to run off rapidly.
Multiple reports from the public, trained spotters and emergency managers from Beaver, Allegheny and Washington counties indicated that mudslides and flash flooding trapped some motorists and brought traffic to a standstill in parts of the region.
Earlier in the week flooding downpours slammed multiple communities in Ohio, including the Mansfield area. The new round of storms can bring another round of flooding and strong wind gusts to these and other locations in the Buckeye state.
The risk of flash flooding and damaging wind gusts also reached into portions of West Virginia, western Maryland, and western and central Pennsylvania.
That front will shave temperatures and humidity in Pittsburgh and throughout much of the Midwest and Northeast late this week into the first part of the weekend.
For some areas, it could be the longest stretch of rain-free weather since the third week in June.
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A storm which will bring the risk of flooding downpours early this week.
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The threat for heavy and locally strong thunderstorms will slowly shift eastward across the southern United States into Monday.