Wow: Camera Goes Inside EF4 Tornado

Explaining the EF scale for tornadoes

Welcome to Longest Stretch Without EF5 Tornado

Take Virtual Tour of Deadly EF5 Tornado

Incredibly narrow but intense damage from a fast moving tornado ... Typically when you see completely bare concrete pads where well built homes stood and large old growth healthy trees over a foot in diameter debarked and delimed you are seeing EF-5 damage. No official ruling yet, but this may be a record for the narrowest EF5 tornado damage ever recorded. Either way, this is tragic. As you continue down the path the debris gets deeper and deeper, piled up by the insanely powerful and likely 200

From the archives: Aerial footage shows devastation from deadly 2008 tornado in Parkersburg, Iowa