The main purpose of this posting is to let you know that the central and southern Plains will be at risk of vicious tornadoes both Friday and Saturday.
Keep in mind as you view this map that 15% is the significant severe thunderstorms (large hail, damaging winds or, in the case, a tornado). Odds near 50% of a severe thunderstorm within 25 mi. of any given point are quite high. The hatching means the tornadoes could be violent, the hail could be larger than 2" and the thunderstorm-related winds could gust to 75 mph or higher.
Same legend explanation as above. The threat shifts east a bit and it includes the DFW Metroplex.
What should you do? At this point, there is no need to cancel plans unless they include a wilderness hike away from radios or other communications. Otherwise, you should plan to keep advised on the weather and make sure your dependents are where you can quickly reach them and they can get to shelter.
I will be back in the office tomorrow and Saturday and will update on this threat as necessary.