A blog about weather, climate, and science. Occasionally, we'll post on other topics of interest.
Speaking of tornadoes, there is an interesting post on WattsUpWithThat about historical tornado activity in the U.S. The assertion is that in spite of this season's powerful and destructive storms, the U.S. is in a tornado "lull". Link:http://wattsupwiththat.com/2013/06/22/the-great-tornado-doldrums/#more-88556
Yes, the large tornadoes (≥F-3) are less frequent than 50 years ago.