Earthquake · reviewed by a seismologist
M 1.9md
Earthquake near Mendota, CA
No earthquake was likely felt in Mendota in the 24 hours to 9:53 pm PST (05:53 UTC). The last one was M 3.9, 74 km (46 mi) WSW, at 3:19 am PDT on 11 August 2026, estimated intensity II (weak) in town; 34 felt reports to USGS. Every earthquake near Mendota
This page: a magnitude 1.9 earthquake was recorded 40 km (25 mi) southwest of Mendota, CA, at 2:26 am PDT on 25 October 2022 (09:26 UTC), 12 km deep.
USGS: 16km NNW of New Idria, CA
- When
- 2:26 am PDT on 25 October 2022 ()
- Where
- 40 km (25 mi) southwest of Mendota, CA · earthquakes near Mendota
- Magnitude
- M 1.9 (md)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- San Benito County, 30 km WNW
- Nearest mapped fault
- Great Valley thrust fault system, 14 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 1472 days ago
Earthquake alerts for Mendota, 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 8 km (5 mi) from the epicentre. In Mendota, 40 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 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
- Magna, Utah 2020 M 5.7 540,000× the energy of this one
- Around the size people start to feel M 3.0 48× the energy of this one
- This earthquake M 1.9 about 20 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 4.7 on 2019-10-15 — about 18,000 times the energy of this one.
Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.1 Northwest of Huron, California · 15 km ESE of this epicentre
- 5.9 10 km SE of Tres Pinos, California · 46 km WNW of this epicentre
- 5.8 Near Paicines, California · 46 km WNW of this epicentre
- 5.8 29 km NE of San Lucas, California · 28 km S of this epicentre
- 5.4 22 km SSW of Three Rocks, California · 34 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 36.5497, -120.7557. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Benito County, CA | 30 km (19 mi) | WNW | earthquakes near San Benito County |
| Monterey County, CA | 61 km (38 mi) | SW | earthquakes near Monterey County |
| Merced County, CA | 72 km (45 mi) | N | earthquakes near Merced County |
| Kings County, CA | 100 km (62 mi) | ESE | earthquakes near Kings County |
| Fresno County, CA | 101 km (63 mi) | ENE | earthquakes near Fresno County |
| Santa Clara County, CA | 112 km (69 mi) | NW | earthquakes near Santa Clara County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.7 10km NW of Pinnacles, CA
- 3.3 10km NW of Pinnacles, CA
- 1.9 17km NW of Pinnacles, CA
- 2.1 20km SE of Pinnacles, CA
- 1.5 6km NE of Pinnacles, CA
- 1.8 6km NE of Pinnacles, CA
- 2.0 4km NE of Pinnacles, CA
- 2.2 3km NNE of Pinnacles, CA
- 1.7 32km NE of Pinnacles, CA
- 2.6 20km NE of San Lucas, CA
- 1.5 9km NNW of Pinnacles, CA
- 1.8 6km NE of Pinnacles, CA
- 1.8 28km NNW of New Idria, CA
- 1.8 13km NW of Pinnacles, CA
- 2.7 16km NW 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
- 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.