QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

Earthquake near Avenal, CA

USGS: 6 km NNE of Avenal, California

85 km (53 mi) SSW of Fresno, CA · 50 km (31 mi) SW of Hanford, CA

2:41 am PDT, Sep 17, 2016 · · 18 km deep · released about 1,800 lb of TNT

10 km30 km60 km120 km N Kings County 25 kmSan Luis Obispo County 81 kmFresno County 88 kmSan Benito County 109 kmMonterey County 112 kmTulare County 119 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
2:41 am PDT on 17 September 2016 ()
Where
7 km (4 mi) NNE of Avenal, CA · earthquakes near Avenal
Magnitude
M 3.2 (ml)
Depth
18 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Kings County, 25 km E
Nearest mapped fault
Great Valley thrust fault system, 5 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3521 days ago

A magnitude 3.2 earthquake was recorded 7 km (4 mi) NNE of Avenal, CA, at 2:41 am PDT on 17 September 2016 (09:41 UTC). 8 people have reported feeling it to USGS. This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

Earthquakes near other towns within 30 km: Kettleman City, Huron, Coalinga, Stratford, Lemoore Station.

How big was it?

This earthquake released about 1,800 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 8,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,800× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× 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.

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 17 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1983 Coalinga, California Earthquake · 28 km NW of this epicentre
  2. 6.5 1922 Parkfield, California Earthquake · 37 km SSW of this epicentre
  3. 6.4 1901 Parkfield, California Earthquake · 37 km W of this epicentre
  4. 6.0 2004 Parkfield, California Earthquake · 36 km SW of this epicentre
  5. 5.6 8 km SW of Huron, California · 12 km NNW 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 36.0537, -120.0905. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kings County, CA 25 km (15 mi) E earthquakes near Kings County
San Luis Obispo County, CA 81 km (50 mi) SSW earthquakes near San Luis Obispo County
Fresno County, CA 88 km (55 mi) NNE earthquakes near Fresno County
San Benito County, CA 109 km (67 mi) NW earthquakes near San Benito County
Monterey County, CA 112 km (70 mi) W earthquakes near Monterey County
Tulare County, CA 119 km (74 mi) E earthquakes near Tulare County

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

Aftershocks so far

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

  1. 2.4 20 km NW of Parkfield, California
  2. 2.4 22 km NW of Parkfield, California
  3. 1.9 24 km S of Kettleman City, California
  4. 1.6 3 km SSE of Avenal, California
  5. 1.5 2 km SE of Avenal, California
  6. 1.6 22 km NW of Parkfield, California
  7. 2.2 20 km NW of Parkfield, California
  8. 2.8 1 km SSE of Avenal, California
  9. 1.6 2 km S of Avenal, California
  10. 2.3 4 km S of Avenal, California
  11. 1.6 3 km SSE of Avenal, California
  12. 1.5 2 km S of Avenal, California
  13. 1.6 17 km S of Three Rocks, California
  14. 1.7 3 km ESE of Avenal, California
  15. 1.7 3 km E of Avenal, California

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.