Wind gusts of up to 45 miles an hour and up to an inch of rain are expected here in Pittsburgh, but the most severe weather will hit communities in the Laurel Highlands.
Investigators say the location of an explosion that killed six people and destroyed three houses was inside one of the homes, and they're ruling out an outside cause, including wells, pipelines and other utilities.
Three houses at the center of a recent explosion near Pittsburgh that killed six people will need to be torn down and 10 others are not currently inhabitable, officials say.