The most powerful and deadliest tornado ever to hit the state of Iowa occurred around the Charles City area on May 15, 1968.

Tornadoes can have extreme differences in how fast they move. Past history shows they can track as fast as traffic on an interstate, or as slow as someone taking a walk.

(WKYT)—Today’s Good Question is, “What’s the difference between the F scale and EF scale for tornadoes?” The EF Scale is basically an updated version of the F-Scale. If you are around my ...

The scale ranked these tornadoes from F0 (weakest) to F5 (strongest). The exact rank is determined by meteorologists and engineers after conducting surveys of damage from a particular storm.

"It’s likely that several of these tornadoes would have been rated F5 using the legacy Fujita scale." Thus, the lack of EF5-rated tornadoes in the past decade is "less due to a weakening of ...

According to a NOAA database, 59 EF5/F5 tornadoes have occurred since 1950, but it has been nearly 12 years since the last event, when an EF5 devastated Moore, Oklahoma in 2013. Researchers from ...

Tornadoes in the U.S. typically increase sharply in spring. Unfortunately, a few of those can be violent tornadoes, particularly in the South. On March 3, 1966, 59 years ago today, an F5 tornado ...