Was there an earthquake in Nebraska?

Since 1867, the year Nebraska became a state, at least 7 earthquakes have originated within Nebraska's boundaries. The strongest of these occurred on November 15, 1877 with an intensity of at least VII based on the Modified Mercalli scale of earthquake intensity from I to XII. This scale replaced the Rossi-Forel scale in 1902, although some countries still use it. It has been modified multiple times throughout the century. The most recent earthquake in Nebraska occurred on October 15, 1972. Its magnitude was calculated as a 3.7 on the Richter Magnitude Scale (named after Charles F. Richter).