Earthquake · reviewed by a seismologist
M 2.1ml
Earthquake near Campo, CA
No earthquake was likely felt in Campo in the 24 hours to 8:28 am PST (16:28 UTC). The last one was M 4.9, 122 km (76 mi) E, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Campo
This page: a magnitude 2.1 earthquake was recorded 16 km (10 mi) east-northeast of Campo, CA, at 1:23 am PDT on 26 May 2023 (08:23 UTC), 14 km deep. 1 person has reported feeling it to USGS.
USGS: 16km ENE of Campo, CA
79 km (49 mi) ESE of San Diego, CA
- When
- 1:23 am PDT on 26 May 2023 ()
- Where
- 16 km (10 mi) east-northeast of Campo, CA · earthquakes near Campo
- Magnitude
- M 2.1 (ml)
- Depth
- 14 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- San Diego County, 60 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1266 days ago
Earthquake alerts for Campo, CA
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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 10 km (6 mi) from the epicentre. In Campo, 16 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: Pine Valley.
How big was it?
This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
- Magna, Utah 2020 M 5.7 250,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 43 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 4.5 on 2020-05-10 — about 4,600 times the energy of this one.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.7 8km ESE of Ocotillo, CA · 38 km E of this epicentre
- 5.2 21km NW of Ocotillo, CA · 29 km NNE of this epicentre
- 5.0 26km NE of Pine Valley, CA · 35 km N 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 32.6550, -116.3130. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 60 km (37 mi) | NW | earthquakes near San Diego County |
| Imperial County, CA | 99 km (62 mi) | ENE | earthquakes near Imperial County |
| Riverside County, CA | 123 km (76 mi) | NNE | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 3.2 12 km E of Ocotillo, CA
- 1.9 10 km E of Julian, CA
- 2.0 20 km NE of Pine Valley, CA
- 1.8 12 km E of Ocotillo, CA
- 2.6 26 km SSW of Ocotillo Wells, CA
- 2.6 12 km E of Ocotillo, CA
- 2.2 12 km E of Ocotillo, CA
- 1.7 23 km NE of Pine Valley, CA
- 2.2 26 km SSW of Ocotillo Wells, CA
- 2.5 26 km SSW of Ocotillo Wells, CA
- 1.8 26 km SSW of Ocotillo Wells, CA
- 2.1 13 km SE of Ocotillo, CA
- 2.0 18 km SW of Ocotillo Wells, CA
- 1.8 18 km ENE of Ocotillo, CA
- 2.0 23 km ESE of Julian, 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.