To recap, a 5.8 magnitude earthquake shook Montana at 12:30:17 a.m. MDT this morning, July 6. The epicenter was 11 kilometers south-southeast of Lincoln, Montana and it was about 13 and a half kilometers deep in the earth.

There was a major aftershock, measuring 4.5 on the Richter scale about ten minutes later. But it was only one of many aftershocks, which could go on for some time. The quake was felt in Canada, Idaho, Washington, Wyoming and throughout Montana.

Mike Stickney is the Earthquake Studies Director at the Bureau of Mines and Geology in Butte. He has the answers to most of your questions. Peter Christian talked to him this morning.

The quake is part of a large quake-prone region called the Lewis and Clark line which stretches from Idaho through Montana. There have been at least 16 earthquakes over magnitude 5 in the last 100 years in this area, including 1925, 1959 and 2005.

No major damage or injuries have been reported on this quake, so far.