Two small earthquakes shake area in northeast Shelby County

Two small earthquakes were reported in northeast Shelby County on Tuesday afternoon, one at 6:23p.m. near Jackson Center, and one at 6:41 p.m. near Anna, according to the United States Geological Survey.

The first of the two earthquakes was rated at magnitude 1.8, centered 2 km west-by-northwest of Jackson Center, at about 9.7 km underground. At time of writing, seven people at reported feeling the quake.

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The second earthquake was centered 5 km east-by-northeast of Anna, and was measured at magnitude 2.4. The USGS said it originated 12.3 km below ground. At time of writing, seven people had also reported feeling this earthquake.

On the USGS’ intensity scale, which rates earthquakes using roman numerals from one to more than 10, both of the earthquakes were rated “IV,” which means light shaking, but no damage.

According to the USGS, the area around Anna is a small seismic zone, which sees moderately frequent earthquakes. The largest earthquake in the area was in 1937, which a magnitude 5.1 earthquake caused some damage. Earthquakes causing moderate damage strike the area every two to three decades, the USGS said, with smaller quakes happening once every few years.

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