Supercells are the mightiest of the thunderstorms. They can roll for hours while maintaining tornadoes and damaging hail.

Minnesota Weather Alert issued as unstable air may trigger supercells, tornadoes, and heavy rain across the region.

Temperatures in Southern Ontario may reach 30°C, the first of the year, as thunderstorms loom, bringing potential hazards ...

BURKBURNETT, Texas — A family of strong tornadoes tore through areas south of Killeen, Texas, on Thursday, leading to swaths ...

The primary concern for residents is the potential for supercell formation. Supercells are a type of thunderstorm characterized by a rotating updraft, which can lead to the formation of tornadoes.

Monday is probably the peak, but a storm risk shifts eastward Tuesday. Cities in the highest risk for tornadoes include ...

AccuWeather's Tony Laubach reported live as supercells developed in Texas on the evening of April 28, ratcheting up the ...

The weather service said there is a potential for hail to be baseball-sized or even larger for several hours after sunset.

Devastating tornadoes cause hundreds of millions of dollars in damage and dozens of deaths across the U.S. each year. They ...

As Senators Chris Van Hollen, Cory Booker, and Congresswoman Alexandria Ocasio-Cortez are showing, there is huge political ...

Kansas City faces severe weather threats with potential supercells, large hail, and tornadoes hitting the metro area.