Storms with hail of 2" or more in diameter are doing to develop over a large area of the Southern Plains this afternoon and tonight.
There is also some risk of tornadoes with the brown area being the threshold of a significant risk.
If you live in these areas, please keep up on the latest weather information. I will have an update or two on this situation later today. AccuWeather will also be providing updates.
ADDITION: Very cool electronic billboard messages in OKC right now.