Earthquake · reviewed by a seismologist
M 3.3ml
Earthquake near Coalinga, CA
No earthquake was likely felt in Coalinga in the 24 hours to 7:43 am PST (15:43 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 3.3 earthquake was recorded 11 km (7 mi) east of Coalinga, CA, at 2:13 am PST on 9 February 2023 (10:13 UTC), 11 km deep. 15 people have reported feeling it to USGS.
USGS: 11km E of Coalinga, CA
81 km (50 mi) SSW of Fresno, CA · 56 km (35 mi) WSW of Hanford, CA
- When
- 2:13 am PST on 9 February 2023 ()
- Where
- 11 km (7 mi) east of Coalinga, CA · earthquakes near Coalinga
- Magnitude
- M 3.3 (ml)
- Depth
- 11 km below the surface
- Felt
- 15 reports · strongest reported intensity III
- Measured shaking
- intensity III (ShakeMap)
- Nearest
- Kings County, 39 km ESE
- Nearest mapped fault
- Great Valley thrust fault system, 8 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 1307 days ago
Earthquake alerts for Coalinga, CA
Get a notification in this browser when USGS records an earthquake near Coalinga, CA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 53 km (33 mi) from the epicentre. In Coalinga, 11 km away, the estimate is intensity III (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.
Likely felt in: Coalinga 11 km, intensity III · Huron 14 km, intensity III · Avenal 18 km, intensity III · Kettleman City 29 km, intensity II · Lemoore 44 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1.5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 110,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 4,900× the energy of this one
- Magna, Utah 2020 M 5.7 3,500× the energy of this one
- This earthquake M 3.3 about 1.5 tons of TNT
- Around the size people start to feel M 3.0 this one released 3.2× 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.
For this area
The largest earthquake within 50 km since 2016 was M 4.3 on 2019-12-17 — about 27 times the energy of this one.
Before 2016, the USGS record lists 17 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1983 Coalinga, California Earthquake · 12 km NW of this epicentre
- 6.5 1922 Parkfield, California Earthquake · 44 km S of this epicentre
- 6.4 1901 Parkfield, California Earthquake · 29 km SW of this epicentre
- 6.0 2004 Parkfield, California Earthquake · 38 km SSW of this epicentre
- 5.6 8 km SW of Huron, California · 7 km E 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 36.1452, -120.2365. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kings County, CA | 39 km (24 mi) | ESE | earthquakes near Kings County |
| Fresno County, CA | 86 km (53 mi) | NE | earthquakes near Fresno County |
| San Luis Obispo County, CA | 86 km (54 mi) | SSW | earthquakes near San Luis Obispo County |
| San Benito County, CA | 92 km (57 mi) | NW | earthquakes near San Benito County |
| Monterey County, CA | 97 km (61 mi) | W | earthquakes near Monterey County |
| Merced County, CA | 125 km (77 mi) | NNW | earthquakes near Merced County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 1.8 11km S of Kettleman City, CA
- 1.6 12km NW of Avenal, CA
- 1.6 2km NE of Cholame, CA
- 1.5 18km SE of New Idria, CA
- 1.7 6km NNE of Avenal, CA
- 1.5 4km SW of New Idria, CA
- 1.9 10km NW of Parkfield, CA
- 1.6 2km N of Cholame, CA
- 1.8 8km SW of Lemoore Station, CA
- 2.5 20km S of Kettleman City, CA
- 2.2 4km SSW of Armona, CA
- 1.8 12km NW of Parkfield, CA
- 1.6 22km ENE of San Ardo, CA
- 1.6 19km SSE of Kettleman City, CA
- 1.9 2km SSW of Lemoore Station, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.