Power lines fell, trees were toppled and some homes suffered damage to rooftops, reports indicated. The weather service said suspected straight-line winds of up to 80 mph were reported in Arkansas late Tuesday night along with flooding in Arkansas' northeastern corner.
Police in the Arkansas community of Monticello reported a person was injured by lightning late Tuesday but the injury was not life-threatening.
The Mississippi Emergency Management Agency urged residents to be on guard for severe thunderstorms, high winds and possible tornadoes Wednesday.
Earlier this week, a large swath of the Midwest and South bathed in unseasonably balmy temperatures that reached the high 70s in some areas.
The temperature in the central Missouri college town of Columbia reached 77 degrees on Monday, a record for January, and students exchanged their winter coats for shorts and flip-flops as freezing rain gave way to spring-like conditions. Foul weather made a quick return, however, with a Tuesday downpour that flooded some streets near the University of Missouri campus. Early morning snow was expected Wednesday.
Chicago residents also have been whiplashed by recent weather extremes. Workers who suffered through subzero temperatures and brutal wind chills a week ago strolled through downtown without coats Tuesday as temperatures soared into the mid-60s.
Carol Krueger, who lives in the Chicago suburb of North Hoffman Estates, noted that just a few days ago she was struggling to drive through blowing snow. All she needed Tuesday was a light jean jacket, although by Thursday temperatures were barely expected to reach 20 degrees.
"It's bizarre, it's scary," Krueger said of the swiftly changing weather.
On Monday, the National Weather Service predicted a "moderate" risk of severe weather more than 24 hours out, only the fifth time it had done so in January in the past 15 years, said Gregory Carbin, the director of the Storm Prediction Center.