In many western and southern states, hundreds of flights have been cancelled.
The severe weather affecting some of the Midwest could creep into Pittsburgh late Sunday night.
Some heavy storm damage has been reported throughout many areas, including Westmoreland County.
Crews are working to repair a crack in a smokestack at the Edgewood Elementary School that may have been caused by a lightning strike.
An evening storm caught some areas by surprise with flooding and heavy rain.
The rain Tuesday in the South Hills created safety issues ranging from creating a fire hazard to a basement full of feces filled water.
The buzz of a chainsaws could be heard on several streets in Shaler Township after a storm roared through the Pittsburgh area Tuesday afternoon.
A strong line of storms made its way through the area this morning, but round two is coming this afternoon. as a result, several watches and warnings have been issued for various parts of the viewing area.
Some motorists around the area ran into problems during the Wednesday morning commute due to flooding.
A line of thunderstorms packing heavy rains is causing flooding issues around the area.
Sunday’s storms literally hit home for a Brentwood family as lightning struck their chimney and sent it tumbling to the ground.
Yet another round of severe weather is rolling through the area today.
State and county officials have been reporting severe flooding in Dubois and some nearby towns in west-central Pennsylvania, after reports of up to four inches of rain Thursday that followed storms the past two days.
About 13,000 people were left without power after severe storms rolled through Pittsburgh Tuesday night.
A tornado warning has been issued for Northwest Pennsylvania.