QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Coalinga, CA

No earthquake was likely felt in Coalinga in the 24 hours to 1:26 am PST (09:26 UTC). The last one was M 2.3, 4 km (3 mi) SE, at 1:44 am PDT on 4 October 2026, estimated intensity II (weak) in town. Every earthquake near Coalinga

This page: a magnitude 3.0 earthquake was recorded 48 km (30 mi) northwest of Coalinga, CA, at 11:15 pm PST on 19 January 2023 (07:15 UTC), 10 km deep. 83 people have reported feeling it to USGS.

USGS: 8km NNW of New Idria, CA

11:15 pm PST, Jan 19, 2023 · · 10 km deep · released about 1,000 lb of TNT

10 km30 km60 km120 km N San Benito County 38 kmMonterey County 62 kmMerced County 79 kmKings County 91 kmFresno County 98 kmMadera County 116 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
11:15 pm PST on 19 January 2023 ()
Where
48 km (30 mi) northwest of Coalinga, CA · earthquakes near Coalinga
Magnitude
M 3.0 (ml)
Depth
10 km below the surface
Felt
83 reports · strongest reported intensity III
Nearest
San Benito County, 38 km WNW
Nearest mapped fault
Great Valley thrust fault system, 15 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 1322 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 36 km (22 mi) from the epicentre. In Coalinga, 48 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 1,000 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 330,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 10,000× the energy of this one
  4. This earthquake M 3.0 about 1,000 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

The largest earthquake within 50 km since 2016 was M 4.3 on 2021-01-02 — about 89 times the energy of this one.

Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1983 Coalinga, California Earthquake · 44 km SE of this epicentre
  2. 6.1 Northwest of Huron, California · 8 km ENE of this epicentre
  3. 5.8 29 km NE of San Lucas, California · 22 km SSW of this epicentre
  4. 5.5 11 km NNE of Coalinga, California · 46 km SE of this epicentre
  5. 5.5 11 km NE of Coalinga, California · 47 km SE 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 36.4840, -120.6923. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Benito County, CA 38 km (24 mi) WNW earthquakes near San Benito County
Monterey County, CA 62 km (39 mi) WSW earthquakes near Monterey County
Merced County, CA 79 km (49 mi) N earthquakes near Merced County
Kings County, CA 91 km (57 mi) ESE earthquakes near Kings County
Fresno County, CA 98 km (61 mi) ENE earthquakes near Fresno County
Madera County, CA 116 km (72 mi) NE earthquakes near Madera County

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

Aftershocks so far

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

  1. 1.6 6km NE of Coalinga, CA
  2. 2.1 20km SE of Pinnacles, CA
  3. 1.6 6km NE of Coalinga, CA
  4. 2.1 21km NE of San Lucas, CA
  5. 2.0 8km ENE of Pinnacles, CA
  6. 1.6 10km NW of Pinnacles, CA
  7. 1.8 21km NNE of San Ardo, CA
  8. 1.8 29km NE of Pinnacles, CA
  9. 1.8 7km N of Pinnacles, CA
  10. 1.9 6km ESE of Pinnacles, CA
  11. 2.2 23km NW of Parkfield, CA
  12. 1.8 9km NW of Pinnacles, CA
  13. 1.7 6km N of Pinnacles, CA
  14. 2.1 11km SE of Pinnacles, CA
  15. 1.8 7km NNW of Pinnacles, CA

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.