U.S. tornadoes hit 60-year record low in 2013 — ‘Normally we’d see 1221 tornadoes in the USA, so far for 2013, only 716 have been reported’
2013 is a record low year for U.S. tornadoes | Watts Up With That?
http://wattsupwiththat.com/2013/08/19/2013-is-a-record-low-year-for-u-s-tornadoes/