Understand the difference between a squall line and a thunderstorm as a severe weather system sweeps the U.S. this March.

Some squall lines can produce tornadoes, too. They’re often wrapped in rain and move erratically.

Squall lines rank among the most common and destructive forms of organized severe weather in the United States, yet they ...

For the third time this month, we're forecasting an outbreak of severe thunderstorms. This time, the threat is mainly ...

Much of North Carolina, including the Triangle area, could see several strong storms with damaging winds and possible ...

A powerful storm chain has brought blizzard conditions to the Upper Midwest, with dangerous winds elsewhere and the threat of ...

Severe weather Monday is likely, with threats of damaging winds, tornadoes and hail possible in central North Carolina.

The next threat of severe weather is a strong squall line expected to move through Monday night, capable of producing ...

Hold on to your hats! Strong winds are expected to blow through New York City Monday as a cold front moves across the region, ...

Don’t be surprised if you wake up to a few snow showers across central Indiana Saturday morning. This won’t be a major system, but scattered flurries or light snow showers could briefly move through ...

Severe storms threaten the D.C. region Monday, with supercells early and a squall line during the afternoon. Damaging winds, ...