Tornadoes in December?

It's been an atypical December in Wichita. This last week had warmer temps than normal, high humidity (with mostly drizzle for the last several days), and the big California storm inbound. Today was thick with overcast and rain, then around 6:31pm, the local National Weather Service issued a tornado warning for Reno County. A touchdown was reported 2 miles NE of Harper.  I ran out just for the chance to see lightning before the long winter set in.  By the time I was in place the storm was too far out and had lost rotation.