The National Weather Service Storm Prediction Center issued the watch effective at 10:30 a.m. for Erie, Crawford and 16 more western Pa. counties.

At least 30 people died as violent weather swept the country on Friday and Saturday, and the threat isn't over.

A severe weather outbreak has brought violent, long-track tornadoes to parts of the South, with damaging winds of up to 80 ...

Severe storms and tornadoes are tearing through the South after deadly outbreak in the Midwest on Friday. Follow for live ...

The eastern part of Ohio is under a tornado watch until 4 p.m. on Sunday. A wind advisory was extended until 2 p.m.

A severe weather system spawned intense, long-duration tornadoes that struck parts of Arkansas, Mississippi and Missouri, leaving some communities in tatters.

At least five people have been killed in a monster storm sweeping across much of the U.S. At least two people were killed in ...

With warm, windy, and dry conditions expected for the start of the workweek, Fire Weather Watches have been issued across the ...

Scientists said the storm's strength and potential for far-reaching impacts is notable, but its timing isn't unusual.

The SPC uses categories to convey the strength of the severe weather threat. TSTM, which is shaded in light green, is technically not a severe weather category, but is just a general thunderstorm ...