The police said that 20 to 30 roofs had tiles blown off, two trees were blown over and one garden shed had been blown down.
No-one was injured during the storm.
The damage level has not yet been officially quantified, but local authorities hope to assess this Friday during daylight hours.
The German Weather Service (DWD) described the stormy conditions as a small tornado, with one of their experts adding that tornadoes are not unusual for this time of year.
Tornado damage in Kürnach. Photo: DPA
"It was not unexpected, but not very likely," the DWD expert explained, adding that the right weather conditions were there amid a thunderstorm.
Temporary warnings were also in place for other regions as the storm moved through lower Franconia, north Bavaria.
There are currently low weather warnings in place from the DWD for the entirety of southern and central Germany.
The weathermen say that skies will be mostly overcast in the north over the weekend, but that it will be sunnier in the south of the country, where temperatures could rise to as high as 17C.
Strong winds are expected along the coast lines in the north and in the Alpine region.