Earthquake · reviewed by a seismologist
M 2.8ml
Earthquake near Auberry, CA
No earthquake was likely felt in Auberry in the 24 hours to 9:36 pm PST (05:36 UTC). The last one was M 5.7, 254 km (158 mi) N, at 6:29 pm PDT on 13 April 2026, estimated intensity II (weak) in town; 6,515 felt reports to USGS. Every earthquake near Auberry
This page: a magnitude 2.8 earthquake was recorded 24 km (15 mi) northeast of Auberry, CA, at 3:35 pm PDT on 21 October 2021 (22:35 UTC), 14 km deep. 6 people have reported feeling it to USGS.
USGS: 14km NNE of Shaver Lake, CA
67 km (42 mi) NE of Fresno, CA · 57 km (35 mi) NE of Clovis, CA
- When
- 3:35 pm PDT on 21 October 2021 ()
- Where
- 24 km (15 mi) northeast of Auberry, CA · earthquakes near Auberry
- Magnitude
- M 2.8 (ml)
- Depth
- 14 km below the surface
- Felt
- 6 reports · strongest reported intensity IV
- Nearest
- Madera County, 42 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1743 days ago
Earthquake alerts for Auberry, 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 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 22 km (14 mi) from the epicentre. In Auberry, 24 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 420 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 36,000× the energy of this one
- Magna, Utah 2020 M 5.7 26,000× the energy of this one
- Around the size people start to feel M 3.0 2.3× the energy of this one
- This earthquake M 2.8 about 420 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 one earthquake of M5 or more within 50 km:
- 5.7 14 km WSW of Aspen Springs, California · 48 km NE 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 37.2233, -119.2770. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Madera County, CA | 42 km (26 mi) | W | earthquakes near Madera County |
| Fresno County, CA | 61 km (38 mi) | SSW | earthquakes near Fresno County |
| Mariposa County, CA | 68 km (42 mi) | NW | earthquakes near Mariposa County |
| Mono County, CA | 85 km (53 mi) | NNE | earthquakes near Mono County |
| Tuolumne County, CA | 107 km (67 mi) | NW | earthquakes near Tuolumne County |
| Tulare County, CA | 119 km (74 mi) | SSE | earthquakes near Tulare County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
33 earthquakes have been recorded within 50 km since this one.
- 1.8 19km SE of Yosemite Valley, CA
- 2.1 19km SE of Yosemite Valley, CA
- 1.8 20km SE of Yosemite Valley, CA
- 1.7 16km WSW of Toms Place, CA
- 2.3 17km WSW of Toms Place, CA
- 1.5 31km SSW of Round Valley, CA
- 1.9 17km WSW of Toms Place, CA
- 2.5 16km WSW of Toms Place, CA
- 2.0 30km ENE of Shaver Lake, CA
- 1.6 17km WSW of Toms Place, CA
- 1.8 29km NE of Oakhurst, CA
- 1.6 17km WSW of Mammoth Lakes, CA
- 1.9 30km NE of Oakhurst, CA
- 2.4 17km WSW of Mammoth Lakes, CA
- 1.5 32km ENE of Shaver Lake, 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.