Magnitude 2.3 Earthquake Appling Georgia April 23 2012

At first this recent earthquake in Georgia was not reported by the USGS due to it’s low magnitude, below 2.5. It was also not widely reported for that reason. Initial reports on April 24 2012 rated the Georgia earthquake at magnitude 2.1, since upgraded to a magnitude 2.3 by the USGS.

I came across this on twitter from Vicki Graf WRDW Weekend Meteorologist in Augusta Georgia. Here is the tweet, My reply, and Vicki’s reply confirming the earthquake:

Here’s the Initial report from WRDW TV 12 Augusta

Tuesday, April 24, 2012

APPLING Ga– Columbia County EMA Director Pam Tucker says after much research by the SRS Seismologist today, he confirms that there was 2.1 magnitude earthquake at 9:26 p.m. last night.

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

She says because all of his stations are located to the southeast, azimuthal coverage is not the best, meaning that the location is not completely accurate. However, it is probably within 1 -2 miles. 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.

Here’s the information from the United States Geological Survey [USGS]

Earthquake Details

This event has been reviewed by a seismologist.

Magnitude 2.3

Date-Time
Tuesday, April 24, 2012 at 01:26:29 UTC
Monday, April 23, 2012 at 09:26:29 PM at epicenter


Location 33.577°N, 82.257°W
Depth 0.1 km (~0.1 mile) (poorly constrained)
Region GEORGIA, USA

Distances
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

Location Uncertainty
horizontal +/- 2.1 km (1.3 miles); depth +/- 4.3 km (2.7 miles)
Parameters NST= 7, Nph= 10, Dmin=65 km, Rmss=0.49 sec, Gp=212°,
M-type=duration magnitude (Md), Version=A

Source
Southeast U.S. Seismic Network

Event ID se042512a

Read about other Earthquakes in Georgia

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