PITTSBURGH (KDKA) -- After two days of tornadoes in less than a week, the Pittsburgh area has already seen more than normal this year. So what's behind these outbreaks of severe weather?

TORNADO WARNING ISSUED Multiple western Pennsylvania counties are now under a tornado warning. Sign up for our NewslettersThe ...

Storms brought very heavy rain to portions of Western Pennsylvania and Northern West Virginia on Saturday. Isolated 1-3"+ ...

More severe weather is possible today for the Pittsburgh area and Western Pennsylvania. The National Weather Service says the ...

PITTSBURGH — Tornadoes and strong storms moved through the area Thursday night. Three tornadoes are confirmed to have touched down in Allegheny County and one hit Washington County. Keep coming ...

LEESVILLE LAKE, OHIO. CONSIDER THIS THE PITTSBURGH COVERAGE AREA HAS NOW SEEN 14 CONFIRMED TORNADOES. THIS MAY THAT TOPS THE RECORD OF 11 IN MAY OF 1985. AND IF YOU TAKE THE YEARS 1995 THROUGH ...

The Pittsburgh area may see tornadoes, damaging wind and large hail. The National Weather Service office in Moon issued a severe storm warning for much of Ohio — particularly Zanesville and New ...

PITTSBURGH — Last year was a record year for tornadoes in Western Pennsylvania. We’ve already had several tornadoes touch down in our area this year. Pittsburgh’s Chief Meteorologist Stephen ...

More than 200,000 customers are without power in Pennsylvania after a storm brought destructive winds as strong as tornadoes to the Pittsburgh area. The area experienced winds gusts of over 80 to ...

Gusty winds and heavy thunderstorms could strike the Pittsburgh region beginning Wednesday afternoon, according to forecasts. Meteorologists are even warning of the chance of isolated tornadoes.