Last night's severe weather kicked off a flood watch in Ohio, but tornadoes can form any time. Here's what to know about them and how they form.

Modern standards qualify the so-called Tri-State Tornado as an F5, a mile-wide funnel with wind speeds greater ... are dead/Among the debris straight ahead/Death seems to come to every door/The strong ...

While ingenious storm chasers and engineers have devised vehicles and instrument packs that can withstand a tornado, the logistics and time involved to deploy such devices before every tornado ...

March is not considered a peak tornado season month, according to the NWS. However, tornadoes can and have occurred every month of the year. How many tornadoes have there been in Ohio over the years?

It's one of the nation's most infamous tornado outbreaks, but it also spurred sorely needed improvements in both severe ...