Slow-moving thunderstorms added to already brimming streams in Pennington County and lightning played havoc with several structures in Rapid City on Thursday.

There were no injuries, but emergency management personnel monitored several low-lying areas for possible flooding.

The South Canyon area drew attention before noon, when automated equipment there measured 2.32 inches of rain in about a half hour.

The potential for flash flooding after one to three inches of intense rain bursts also raised concerns for Cleghorn Canyon, along Nemo Road and areas of Boxelder Creek. The National Weather Service also warned of minor flooding in downtown Rapid City, Black Hawk Creek, Bogus Jim Creek, Rapid Creek, Victoria Creek, Prairie Creek, Deer Creek and Red Rock Canyon.

"We checked those out. The creeks are up definitely, but nothing to alarm us at this point," Pennington County Emergency Management Director Anthony Carbajal said.

Bill Cecil of the Rapid City weather service office said a lot of unsettled weather was moving into the area. "Most of the severe weather is in the Aberdeen area, but we have some that are borderline to severe," he said.

Capt. Mark Kirchgesler, Rapid City Department of Fire and Emergency Services, said fire crews answered several calls concerning lightning strikes within the city.

The first strike was reported at 901 E. Meade St.

Kirchgesler said there was no damage to the home, but there was an electrical problem. "An electric heater took the brunt of the damage," he added.

Additionally, fire officials were notified of an alarm at Black Hills Beauty College, 623 St. Joe. A lightning system had affected the beauty school's electrical system causing the malfunction. "There was no fire," Kirchgesler said.