Earthquake · reviewed by a seismologist
M 2.5md
Earthquake near Coalinga, CA
No earthquake was likely felt in Coalinga in the 24 hours to 3:56 am PST (11:56 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 2.5 earthquake was recorded 36 km (23 mi) north-northwest of Coalinga, CA, at 11:08 pm PST on 8 February 2021 (07:08 UTC), 11 km deep. 8 people have reported feeling it to USGS.
USGS: 13km E of New Idria, CA
76 km (47 mi) WSW of Fresno, CA
- When
- 11:08 pm PST on 8 February 2021 ()
- Where
- 36 km (23 mi) north-northwest of Coalinga, CA · earthquakes near Coalinga
- Magnitude
- M 2.5 (md)
- Depth
- 11 km below the surface
- Felt
- 8 reports · strongest reported intensity II
- Nearest
- San Benito County, 53 km WNW
- Nearest mapped fault
- Great Valley thrust fault system, 9 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 2030 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 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 19 km (12 mi) from the epicentre. In Coalinga, 36 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 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 99,000× the energy of this one
- Magna, Utah 2020 M 5.7 70,000× the energy of this one
- Around the size people start to feel M 3.0 6.2× the energy of this one
- This earthquake M 2.5 about 150 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 15 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1983 Coalinga, California Earthquake · 30 km SE of this epicentre
- 6.4 1901 Parkfield, California Earthquake · 49 km S of this epicentre
- 6.1 Northwest of Huron, California · 10 km NW of this epicentre
- 5.8 29 km NE of San Lucas, California · 26 km SW of this epicentre
- 5.6 8 km SW of Huron, 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 36.4367, -120.5287. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Benito County, CA | 53 km (33 mi) | WNW | earthquakes near San Benito County |
| Monterey County, CA | 74 km (46 mi) | WSW | earthquakes near Monterey County |
| Kings County, CA | 76 km (47 mi) | ESE | earthquakes near Kings County |
| Fresno County, CA | 86 km (53 mi) | ENE | earthquakes near Fresno County |
| Merced County, CA | 86 km (53 mi) | NNW | earthquakes near Merced County |
| Madera County, CA | 110 km (69 mi) | NE | earthquakes near Madera County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 2.1 23km S of South Dos Palos, CA
- 1.5 12km E of Coalinga, CA
- 1.7 16km NW of Parkfield, CA
- 1.6 16km NW of Parkfield, CA
- 1.7 15km NW of Parkfield, CA
- 1.9 23km WSW of New Idria, CA
- 1.7 7km ESE of Pinnacles, CA
- 3.3 23km S of South Dos Palos, CA
- 2.0 10km SE of Pinnacles, CA
- 1.9 18km NW of Parkfield, CA
- 1.6 12km NNW of Avenal, CA
- 2.2 12km NNW of Avenal, CA
- 2.3 24km NW of Parkfield, CA
- 1.5 19km NW of Parkfield, CA
- 2.1 23km NE of King City, 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.