QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1mb_lg

4 km N of Flomaton, Alabama

· 5.0 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Escambia County 13 kmSanta Rosa County 47 kmConecuh County 51 kmEscambia County 57 kmMonroe County 61 kmBaldwin County 62 kmOkaloosa County 80 kmCovington County 81 kmClarke County 89 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
Magnitude
M 3.1 (mb_lg)
Depth
5.0 km below the surface
Felt
18 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
Nearest
Escambia County, 13 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2682 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 18 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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.

Where

Epicentre 31.0414, -87.2687. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Escambia County, AL 13 km (8 mi) SW of here earthquakes near Escambia County
Santa Rosa County, FL 47 km (29 mi) NNW of here earthquakes near Santa Rosa County
Conecuh County, AL 51 km (32 mi) SSW of here earthquakes near Conecuh County
Escambia County, FL 57 km (35 mi) N of here earthquakes near Escambia County
Monroe County, AL 61 km (38 mi) S of here earthquakes near Monroe County
Baldwin County, AL 62 km (39 mi) NE of here earthquakes near Baldwin County

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

Aftershocks so far

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

  1. 1.8 4 km WNW of Jay, Florida
  2. 3.8 1 km W of Pollard, Alabama
  3. 1.9 5 km NW of Pollard, Alabama
  4. 2.6 13 km NW of Flomaton, Alabama
  5. 3.1 6 km NNW of Pollard, Alabama
  6. 2.5 8 km NW of Pollard, Alabama
  7. 2.7 2 km ESE of Century, Florida
  8. 2.2 0 km SSW of Pollard, Alabama
  9. 2.3 3 km ENE of Flomaton, Alabama

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.