Earthquake · reviewed by a seismologist
M 2.3ml
Earthquake near Campo, CA
No earthquake was likely felt in Campo in the 24 hours to 8:17 am PST (16:17 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 2.3 earthquake was recorded 36 km (23 mi) south-southeast of Campo, CA, at 1:38 pm PDT on 22 September 2023 (20:38 UTC), 17 km deep. 4 people have reported feeling it to USGS.
USGS: 36 km SSE of Campo, CA
94 km (59 mi) SE of San Diego, CA
- When
- 1:38 pm PDT on 22 September 2023 ()
- Where
- 36 km (23 mi) south-southeast of Campo, CA · earthquakes near Campo
- Magnitude
- M 2.3 (ml)
- Depth
- 17 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- San Diego County, 90 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1144 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 8 km (5 mi) from the epicentre. In Campo, 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 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
- Magna, Utah 2020 M 5.7 140,000× the energy of this one
- Around the size people start to feel M 3.0 12× the energy of this one
- This earthquake M 2.3 about 77 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 4.2 on 2018-07-25 — about 760 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 6.1 30km ENE of Ensenada, B.C., MX · 41 km S of this epicentre
- 5.7 19km ESE of Primo Tapia, B.C., MX · 43 km WSW of this epicentre
- 5.6 37km ENE of Ensenada, B.C., MX · 37 km SSE of this epicentre
- 5.4 62km SSW of Progreso, B.C., MX · 49 km ESE 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 32.2993, -116.3385. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 90 km (56 mi) | NNW | earthquakes near San Diego County |
| Imperial County, CA | 124 km (77 mi) | NE | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
19 earthquakes have been recorded within 50 km since this one.
- 1.8 44 km ENE of Ensenada, B.C., MX
- 2.0 44 km ENE of Ensenada, B.C., MX
- 2.6 28 km E of Primo Tapia, B.C., MX
- 2.9 41 km ENE of Maneadero, B.C., MX
- 2.1 36 km ENE of Ensenada, B.C., MX
- 2.5 26 km SSE of Campo, CA
- 1.8 45 km ENE of Ensenada, B.C., MX
- 2.2 44 km ENE of Ensenada, B.C., MX
- 1.6 24 km SE of Campo, CA
- 1.5 44 km S of Campo, CA
- 2.6 32 km E of Primo Tapia, B.C., MX
- 2.3 36 km ENE of Ensenada, B.C., MX
- 2.1 19 km NNE of El Sauzal, B.C., MX
- 2.1 38 km SSE of Campo, CA
- 2.0 11 km NE of El Sauzal, B.C., MX
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.