Vis a Vis the Tornado Force Scale...?

The recent horrible tornadoes in Joplin and Tuscaloosa have been commonly described in the newspapers and in TV and radio commentaries (including NPR) as "Force 5 - with winds of up to 200 mph". But I always thought that Force 5 was winds of 300 mph and above - which is how it is described on Wikipedia. Certainly the damage in Joplin and Tuscaloosa suggest the latter. What is the story - has the Force Scale been changed or is the media (including NPR and The New York Times!!!) somehow getting it wrong???)