Holts Summit was hit Saturday afternoon by what a National Weather Service spokesman said was a relatively rare microburst.
The brief violent storm uprooted trees, tossed a large trampoline over a street and wrecked a large transport truck traveling along nearby U.S. 54.
"All of the conditions reported fit a classic microburst. It's relatively rare to have one that causes damage," said Scott Truett, senior forecaster for the National Weather Service in St. Louis.
"There was no rain near the truck accident but heavy rain nearby. The damage also was confined to one small area. All of this is very typical of a microburst. Microbursts are reported in our forecast area almost every year. But it's unusual to have one cause damage," Truett said. "Conditions were ideal on Saturday for a microburst. We had extremely hot, dry air."