Out of place outbreaks, ie northeast, middle atlantic, rockies westward

[Ed Sweeney]

To revive an old thread, the 5/31/98 outbreak in the Northeastern U.S. stands out as well, as the SPC had issued a High Risk across much of NY & PA. There were multiple F3s and an F2 in Northeast Philadelphia:

http://www.convectiveoutlook.com/highrisk/19801999/outlooks.htm

http://www.tornadohistoryproject.com/tornado/1998/5/31/map

 

[Devin Pitts]

While not an outbreak, it was quite a significant event considering the area it happened in. On May 25th, 2011 during an ongoing tornado outbreak in the Missouri, a cyclic supercell set up shop in the northern Sacramento Valley in California. It dropped no less than 5 separate tornadoes, including an EF-2 that uprooted over 25,000 almond trees and caused roughly $1 Million worth of damage to that particular almond tree grove. Pictured is the EF-2 in progress: