Severe weather is looking likely for most of Oklahoma on Sunday. In fact, a moderate risk for severe weather will exist in Oklahoma on Sunday. Areas east of US 281 and south of I40 looks like the best bet. Here tornadoes are possible as well as large damaging hail and straight line winds. North of this area and east of US 281, a tornado threat is next to zero, but there is still a slight chance of severe weather. Mainly the threat will be damaging winds and marginally severe hail up to golf ball sized.
I will have the latest information when it becomes available.