In Spite of What the MSM Says, the Recent Tornadoes Were Not Caused by Global Warming

A distinguished professor of meteorology from the University of Washington opines. 

And, damage from tornadoes is decreasing. 

1950 is chosen for the start point because that is when records began. 

And, violent tornadoes (like December 10's) are much less frequent than 50 years ago.

Official NOAA data