Every year, an average of 1000 tornadoes are reported in the U.S., causing 80 deaths and 1500 injuries. Being in the path of Tornado Alley, Oklahoma is a prime target. Since 1893, 23 tornadoes have hit Moore, Okla., and surrounding neighborhoods alone, killing 100-plus people. But residential tornado shelters are still more of an exception than a rule in the Sooner State.

Read the full article, originally published in Builder Magazine.