QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1mwr

6 km NNW of Pollard, Alabama

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Escambia County 5 kmConecuh County 44 kmSanta Rosa County 48 kmMonroe County 58 kmEscambia County 63 kmBaldwin County 70 kmCovington County 74 kmOkaloosa County 78 kmButler 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 (mwr)
Depth
9.5 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Escambia County, 5 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2656 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 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 31.0832, -87.1989. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Escambia County, AL 5 km (3 mi) SSW of here earthquakes near Escambia County
Conecuh County, AL 44 km (27 mi) SSW of here earthquakes near Conecuh County
Santa Rosa County, FL 48 km (30 mi) NNW of here earthquakes near Santa Rosa County
Monroe County, AL 58 km (36 mi) SSE of here earthquakes near Monroe County
Escambia County, FL 63 km (39 mi) N of here earthquakes near Escambia County
Baldwin County, AL 70 km (44 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

4 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

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.