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

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

A taste of summer heat in southern Ontario on Tuesday could also set off severe thunderstorms in the afternoon and evening, ...

"What makes a supercell unique from all other thunderstorm types is that it contains a deep and persistent rotating updraft called a mesocyclone. If the environment is favorable, supercell ...

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

Powerful thunderstorms slammed the central U.S. from the Plains to the Upper Midwest on Monday evening, with officials in ...

A taste of summer heat in southern Ontario on Tuesday could also set off severe thunderstorms in the afternoon and evening, ...

Severe storms, tornadoes, and heavy rain have caused devastation ... "What makes a supercell unique from all other thunderstorm types is that it contains a deep and persistent rotating updraft ...

Supercells are the king of thunderstorms. They can tower 10 or more miles tall, spin like a top and produce the most extreme weather on the planet. They drop hail the size of melons, can spawn ...

A potent Colorado low will bring southern Ontario a severe thunderstorm risk on Tuesday as ... system is expected by Thursday night with widespread rain, followed by a reinforcing shot of chilly ...

WE’VE GOT WARM AIR ABOVE US, AND THAT IS WHY THUNDERSTORM FORMATION ... WE STILL HAVE A CHANCE OF ON AND OFF RAIN SHOWERS. WEDNESDAY. WE’VE MADE A WEATHER IMPACT DAY BECAUSE RAIN IS LIKELY ...