QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Williams, AZ

USGS: 9 km WSW of Williams, Arizona

3:40 pm MST, Aug 14, 2023 · · 5.0 km deep · released about 240 lb of TNT

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10 km30 km60 km120 km N Yavapai County 70 kmCoconino County 83 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
3:40 pm MST on 14 August 2023 ()
Where
10 km (6 mi) WSW of Williams, AZ · earthquakes near Williams
Magnitude
M 2.6 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Yavapai County, 70 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1071 days ago

A magnitude 2.6 earthquake was recorded 10 km (6 mi) WSW of Williams, AZ, at 3:40 pm MST on 14 August 2023 (22:40 UTC). This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 lists 2 earthquakes of M5 or more within 50 km:

  1. 5.3 5 km SSE of Valle, Arizona · 47 km NNE of this epicentre
  2. 5.0 3 km SSW of Valle, Arizona · 47 km NNE of this epicentre

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 35.2178, -112.2922. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yavapai County, AZ 70 km (44 mi) SSW earthquakes near Yavapai County
Coconino County, AZ 83 km (51 mi) NE earthquakes near Coconino County

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

Aftershocks so far

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

  1. 2.5 14 km N of Clarkdale, Arizona
  2. 2.6 20 km NE of Parks, 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.