QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

9 km SSW of Franklin, Arizona

· 5.0 km deep · released about 1,900 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Greenlee County 72 kmGrant County 72 kmGraham County 79 kmHidalgo County 86 kmCochise County 104 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 3.2 (ml)
Depth
5.0 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Greenlee County, 72 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2388 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 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× 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 32.6014, -109.1330. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Greenlee County, AZ 72 km (44 mi) S of here earthquakes near Greenlee County
Grant County, NM 72 km (45 mi) WSW of here earthquakes near Grant County
Graham County, AZ 79 km (49 mi) ESE of here earthquakes near Graham County
Hidalgo County, NM 86 km (53 mi) NNW of here earthquakes near Hidalgo County
Cochise County, AZ 104 km (65 mi) NE of here earthquakes near Cochise County

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

Aftershocks so far

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

  1. 2.6 8 km W of San Simon, Arizona
  2. 2.9 10 km S of Franklin, Arizona
  3. 2.5 1 km SSE of Franklin, Arizona
  4. 2.5 16 km WSW of Lordsburg, New Mexico
  5. 3.3 3 km WSW of Franklin, Arizona
  6. 2.8 4 km SSW of Duncan, Arizona
  7. 2.7 3 km NNE of Franklin, Arizona
  8. 3.0 11 km S of Virden, New Mexico
  9. 3.1 15 km S of Virden, New Mexico
  10. 2.8 Arizona
  11. 2.7 6 km WSW of Franklin, Arizona
  12. 2.8 9 km SE of York, Arizona

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.