An organized complex of storms is expected to affect the Pittsburgh area late today and into the overnight hours.
The National Weather Service was tracking a so-called derecho weather pattern in the Midwest on Tuesday that could spawn severe windstorms in major metropolitan areas with gusts as strong as 100 mph.
A tornado warning has been issued for Northwest Pennsylvania.
Before a heat wave hits the area later this week, another round of wet weather could bring strong storms, high winds and hail today.
While much of the area was greeted with sun Wednesday morning, there could be a very different story this afternoon.
A strong cold front that brought severe weather and devastating tornadoes to Oklahoma and the plains is expected to move into Western Pennsylvania Wednesday, and Thursday.
Severe storms moved through Western Pennsylvania Friday toppling trees, and causing some power outages.
Springtime in Pittsburgh usually means storms and another round of severe weather is moving into the area this evening.
Winter has finally loosened its grip on western Pennsylvania, but with warmer weather comes the threat of thunderstorms.
As is always the case, it was an event-filled year with regard to our weather. Meteorologist Dennis Bowman sat down and came up with a list of the top five weather events of 2012.
The day after storms moved through parts of the area, we are bracing for another round of gusty thunderstorms this afternoon and evening.
Severe weather struck the Pittsburgh area Thursday, knocking out power and bringing down trees.
Severe thunderstorms are possible this afternoon as a disturbance rolls in from the northwest. The warm, steamy atmosphere will kick off storms with lightning, potentially some hail and damaging winds.
Severe thunderstorm watches and warnings have been issued for much of the area.
A Severe Thunderstorm Watch has been issued for much of the viewing area until midnight.