[savedbygrace]

The new scale is called the Enhanced Fujita Scale. The designations are EF-0 through EF-5. The EF-5 tornadoes have winds of more than 200MPH.

http://en.wikipedia.org/wiki/Enhanced_Fujita_Scale

[300magnum]

Yeah, on the old scale a F3 tornado has winds of 158–206 mph. On the old scale a F5 tornado has winds of 261–318 mph.

The new scale ranks a F5 tornado as having wind speeds of >200 mph. So this was basicaly a F3 last year and a F5 this year.