QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Macon, GA

No earthquake was likely felt in Macon in the 24 hours to 9:46 am EST (14:46 UTC). The last one was M 2.3, 21 km (13 mi) W, at 1:54 am EST on 18 November 2022, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Macon

This page: a magnitude 2.3 earthquake was recorded 8 km (5 mi) north-northeast of Macon, GA, at 1:29 am EDT on 27 June 2021 (05:29 UTC), less than 1 km deep. 118 people have reported feeling it to USGS.

USGS: 7 km NNE of Macon, Georgia

14 km (9 mi) NE of Macon-Bibb County, GA

1:29 am EDT, Jun 27, 2021 · · 0.0 km deep · released about 74 lb of TNT

10 km30 km60 km120 km N Jones County 14 kmBibb County 14 kmTwiggs County 30 kmMonroe County 34 kmBaldwin County 36 kmWilkinson County 40 kmCrawford County 42 kmPeach County 43 kmJasper County 48 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
1:29 am EDT on 27 June 2021 ()
Where
8 km (5 mi) north-northeast of Macon, GA · earthquakes near Macon
Magnitude
M 2.3 (md)
Depth
0.0 km below the surface
Felt
118 reports · strongest reported intensity IV
Nearest
Jones County, 14 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1607 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 35 km (22 mi) from the epicentre. In Macon, 8 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Gray, Gordon.

How big was it?

This earthquake released about 74 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 74 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 32.8980, -83.5875. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jones County, GA 14 km (9 mi) N earthquakes near Jones County
Bibb County, GA 14 km (9 mi) SW earthquakes near Bibb County
Twiggs County, GA 30 km (19 mi) SSE earthquakes near Twiggs County
Monroe County, GA 34 km (21 mi) WNW earthquakes near Monroe County
Baldwin County, GA 36 km (22 mi) ENE earthquakes near Baldwin County
Wilkinson County, GA 40 km (25 mi) ESE earthquakes near Wilkinson County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

8 earthquakes have been recorded within 50 km since this one.

  1. 2.4 16 km NNW of Cochran, Georgia
  2. 2.2 13 km SSE of Eatonton, Georgia
  3. 2.0 14 km SSE of Eatonton, Georgia
  4. 1.8 14 km SSE of Eatonton, Georgia
  5. 2.1 15 km NNW of Milledgeville, Georgia
  6. 2.3 15 km SE of Eatonton, Georgia
  7. 2.3 7 km NW of West Point, Georgia
  8. 2.3 14 km NNE of Milledgeville, Georgia

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.