On our location we have weather alert radios to keep us aware of any type of bad weather. Most deaths and injuries happen to people who are unaware and uninformed. Those who ignore the weather because of indifference or overconfidence may not perceive the danger. If there is a watch or warning posted, then the fall of hail should be considered as a real danger sign.
Hail can be common in some areas, however, and usually has no tornado activity along with it.
A strange quiet occurs shortly after the thunderstorm. Clouds moving by fast, especially in a rotating pattern or centering toward one area of the sky. A sound a little like a waterfall or rushing air at first, but turning into a roar as it comes closer. The sound of a tornado has been described as the same sound of both railroad trains and jets. Debris dropping from the sky.