UPDATE: USGS confirms 2.3-magnitude earthquake in Appling area

Earthquake
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Wednesday, April 25, 2012

COLUMBIA COUNTY, Ga. -- Columbia County EMA Director Pam Tucker says she was contacted by the U.S. Geological Survey office in Memphis, saying they have also confirmed Monday's earthquake.

It registered on USGS equipment as a 2.3-magnitutde earthquake about 8 miles WNW of Evans.

From the USGS website:
13 km (8 miles) NW (304°) from Evans, GA
13 km (8 miles) SW (224°) from Clarks Hill, SC
15 km (10 miles) NNW (339°) from Grovetown, GA
27 km (17 miles) NW (306°) from Augusta, GA
200 km (124 miles) E (95°) from Atlanta, GA

Initial report:
APPLING, Ga. -- Columbia County EMA Director Pam Tucker says after much research by the SRS seismologist, it has been confirmed there was 2.1-magnitude earthquake at 9:26 p.m. Monday night.

They found the earthquake was generally located near the intersection of the Appling-Harlem Highway and Columbia Road.

The small tremor was not listed on the USGS map due to its small size.

This would explain the loud boom and shaking that many residents felt and reported.