The tornadoes that struck the Kansas towns of Plevna and Grinnell on Sunday were EF3s, the National Weather Service says. No ...

The National Weather Service has finished its survey of the deadly tornado that ripped through southeastern Kentucky last ...

Severe storms slammed the DMV Friday with damaging winds and a radar indicated tornado. Here's how to tell the difference ...

So even if wind speeds were actually 170 mph hitting that tree... the tornado would earn a 130 mile per hour rating for that damage. The EF scale assigns an intensity rating based on the estimated ...

Meteorologist Chris Bianchi explains the difference between landspouts and the supercell tornadoes that hit east of the Denver metro area on Sunday.

What's the difference between a watch and a warning Was there a tornado in Michigan? No confirmation, wind gusts reach 75 mph Here's more on wind speeds across Michigan, according to the National ...

The National Weather Service confirmed Saturday that a tornado hit Sussex County during a line of severe thunderstorms that moved through the region on May 16. Meteorologists from the National ...

which measures tornado wind speeds based on the damage left behind. According to the National Weather Service, a tornado warning is issued when a tornado is sighted or indicated by weather radar.