Oklahoma is well-known as the epicenter for tornadoes. While they can & do occur any time of the year, each spring typically sees a huge increase in activity. Be sure to keep your supplies in check and your shelter ready, refer to multiple sources of severe weather info, and continue to practice your tornado precautions. Remember... a NOAA Weather Radio is like a smoke detector for tornadoes... check the battery often!
You can monitor severe weather forecasts & current conditions at these links: