On Friday at 11:53 p.m. the National Weather Service issued a tornado watch in effect until Saturday at midnight for Bucks, Chester, Delaware, Montgomery and Philadelphia counties.

Tornadoes need atmospheric instability caused by warm, moist air near the ground, and cool, dry air up in the atmosphere, and wind shear to form, according to the National Weather Service.

Violent tornado outbreaks, like the storms that tore through parts of St. Louis and London, Kentucky, on May 16, have made 2025 seem like an especially active, deadly and destructive year for ...

Violent tornado outbreaks, like the storms that tore through parts of St. Louis and London, Kentucky , on May 16, have made 2025 seem like an especia ...

Illinois tops tornado chart as severe threat eases — for now Cooler temps, heavy rain threat for holiday weekend By Tim McGill, Meteorologist May 22, 2025 ...

BEAUMONT, Texas — A tornado warning that was issued by the National Weather Service for Jasper and Newton Counties has been canceled. The tornado warning was around Kirbyville, according to the ...

Tornado shelters are common in Texas and Oklahoma but less so in other U.S. regions. The Southeast is more densely populated, and mobile homes (which often fare poorly in windstorms) are prevalent.

Tornadoes don't just appear out of nowhere. They need the perfect storm to form. It starts when warm, humid air clashes with cold air, which can generate a powerful thunderstorm known as a supercell.

A Tornado Warning is issued by the local NOAA Office meteorologists who monitor the weather in the area. NOAA said they issue a warning when a tornado has been reported by spotters or indicated by ...

How does a tornado form? (WMBF) Think of this, if we have surface winds and strong winds aloft. If you were to put a pinwheel into between these two wind profiles you’ll get a rotating column of ...