Friend from there (North of OKC) just told me the following:
Actually there are now seven (7) confirmed tornadoes on the ground in OKC in a line from the west to the east on I-40 all heading east.
We are hearing non-stop thunder and the tornado warning sirens are sounding about every five minutes. Tough night.
We are in good shape here, but south OKC, not good. On radar Tinker AFB is getting hit by a F-3 to 4 tornado right now.