Earthquake · reviewed by a seismologist
M 2.2md
Earthquake near San Joaquin, CA
No earthquake was likely felt in San Joaquin in the 24 hours to 10:22 am PST (18:22 UTC). The last one was M 3.9, 89 km (55 mi) W, at 3:19 am PDT on 11 August 2026, estimated intensity II (weak) in town; 34 felt reports to USGS. Every earthquake near San Joaquin
This page: a magnitude 2.2 earthquake was recorded 12 km (7 mi) southeast of San Joaquin, CA, at 11:02 am PST on 12 January 2022 (19:02 UTC), 18 km deep.
USGS: 12km SE of San Joaquin, CA
38 km (23 mi) SW of Fresno, CA
- When
- 11:02 am PST on 12 January 2022 ()
- Where
- 12 km (7 mi) southeast of San Joaquin, CA · earthquakes near San Joaquin
- Magnitude
- M 2.2 (md)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- Fresno County, 46 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1760 days ago
Earthquake alerts for San Joaquin, CA
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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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 2 km (1 mi) from the epicentre. In San Joaquin, 12 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.
Earthquakes near other towns within 30 km: Kerman, Caruthers, Riverdale, West Park, Easton, Biola.
How big was it?
This earthquake released about 52 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 290,000× the energy of this one
- Magna, Utah 2020 M 5.7 200,000× the energy of this one
- Around the size people start to feel M 3.0 18× the energy of this one
- This earthquake M 2.2 about 52 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 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1983 Coalinga, California Earthquake · 40 km SSW of this epicentre
- 6.1 Northwest of Huron, California · 46 km W of this epicentre
- 5.6 8 km SW of Huron, California · 45 km S of this epicentre
- 5.5 11 km NNE of Coalinga, California · 39 km SSW of this epicentre
- 5.5 11 km NE of Coalinga, California · 40 km SSW 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 36.5415, -120.0877. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Fresno County, CA | 46 km (28 mi) | ENE | earthquakes near Fresno County |
| Kings County, CA | 58 km (36 mi) | SSE | earthquakes near Kings County |
| Madera County, CA | 80 km (50 mi) | NNE | earthquakes near Madera County |
| San Benito County, CA | 89 km (56 mi) | W | earthquakes near San Benito County |
| Merced County, CA | 92 km (57 mi) | NW | earthquakes near Merced County |
| Monterey County, CA | 115 km (71 mi) | WSW | earthquakes near Monterey County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
51 earthquakes have been recorded within 50 km since this one.
- 2.6 19km NNW of Coalinga, CA
- 1.6 9km W of Huron, CA
- 2.2 20km NNW of Coalinga, CA
- 2.5 6km S of Armona, CA
- 1.6 16km N of Coalinga, CA
- 1.9 18km SE of New Idria, CA
- 2.2 15km NW of Coalinga, CA
- 2.1 6km NNE of Lemoore, CA
- 1.9 15km NW of Coalinga, CA
- 1.7 11km N of Avenal, CA
- 1.9 9km NW of Lemoore Station, CA
- 1.7 8km NE of Coalinga, CA
- 1.5 9km NE of Coalinga, CA
- 1.7 6km SSW of Huron, CA
- 2.0 7km NNE of Coalinga, 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.