Most tornadoes (click here) spin counter-clockwise, but during Monday's tornado outbreak, one tornado was spinning clockwise or backwards.
Anticyclonic tornadoes are very, very rare, but a tornado near Roff, Oklahoma, was on the ground for almost 13 miles.
An anticyclonic twister developed about 6 miles north-northwest of Sulphur and moved northeast. The tornado has been rated as an EF1 tornado with winds up to 110 mph.
The tornado was likely wrapped in precipitation and not very visible. At the same time, a larger EF-3 tornado was on the ground, moving to the east, about 6 miles to the west of the anticyclonic tornado. One could even consider this rare tornado as it satellite tornado to moved around the larger tornadic circulation.
The physics involved in a phenomena such as this is noted in fluid mechanics. Air is a form of fluid. The energy (heat) was so high a resultant multiple vortexes resulted.
