The U.S. Geological Survey has downgraded the earthquake that shook north central Indiana on Thursday morning and may have been felt in the Chicago area.
The earthquake was reported at 6:55 a.m. about 15 miles east of Kokomo, Ind., according to Kokomo police.
The earthquake’s magnitude was initially measured at 4.2 but was later downgraded to 3.8 by the U.S. Geological Survey.
Between 6:55 and 7:10 a.m., 113 people called 911 reporting they heard an explosion or rumbling, Kokomo police Major Tony Arnett said. That did not include non-emergency calls which were in the hundreds, he said.
Nearby counties were also getting similar calls.
“I know it was very widespread and people felt it,” Arnett said. “People weren’t aware of what exactly it was but felt like it was an explosion or an earthquake. There were a lot of concerned people and a lot of scared people.”
No injuries were reported but several homes did sustain minor damage, including cracks in the wall.
Arnett said he felt the quake for about three seconds.
“It was about two or three seconds of you know, something isn’t right,” Arnett said. “It was a hard jolt and my personal feeling was that it had been an explosion.”
The town felt a similar quake more than a year ago with that jolt lasting about 10 seconds, he said.
Several residents in the Chicago area say they felt the quake, according to a USGS Community Intensity Map, which indicates towns surrounding north central Indiana reported light shaking. In the Chicago area, the intensity was rated as “weak” shaking.
Earthquakes between 2.5 and 5.4 on the Richter scale are listed as moderate quakes. There are about 30,000 quakes within that range a year.