INDIANAPOLIS - The damage in Oklahoma is renewing an old fear among all who live in tornado alley, and a lot of people are taking a closer look at an old way to protect themselves during severe weather.
Since the tornado outbreak, Matt Wharff's phone hasn't stopped ringing.
Wharff is the owner of Superior Safe Rooms , which sells and installs in-ground storm shelters.
The company says that sales soared after the deadly southern Indiana tornadoes in March 2012 that heavily damaged Henryville and tore through its high school, and the damage in Oklahoma has re-ignited those fears.
"Now people are like, this is hitting too close to home," Wharff said. "The weather's so unpredictable. They just don't want to take a chance now."
Since severe weather can happen any time of year, early warnings are a key to survival. Experts say that the first way to prepare is with a weather radio, so that you'll have time to get to safety.
Priced from $3,500 to $8,000, the shelters can hold from four people up to 20. Most of the buyers are homeowners without basements.
Follow Chris Proffitt on Twitter: @chrisproffitt