Earthquake · reviewed by a seismologist
M 2.3ml
Earthquake near Campo, CA
No earthquake was likely felt in Campo in the 24 hours to 5:07 am PST (13:07 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 29 km (18 mi) south of Campo, CA, at 10:55 pm PDT on 9 April 2020 (05:55 UTC), 21 km deep. 5 people have reported feeling it to USGS.
USGS: 29km S of Campo, CA
84 km (52 mi) SE of San Diego, CA
- When
- 10:55 pm PDT on 9 April 2020 ()
- Where
- 29 km (18 mi) south of Campo, CA · earthquakes near Campo
- Magnitude
- M 2.3 (ml)
- Depth
- 21 km below the surface
- Felt
- 5 reports · strongest reported intensity III
- Nearest
- San Diego County, 82 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2404 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 it was probably too small to be felt, even directly above it. In Campo, 29 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 94 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 5.8 160,000× the energy of this one
- Magna, Utah 2020 M 5.7 110,000× the energy of this one
- Around the size people start to feel M 3.0 10× the energy of this one
- This earthquake M 2.3 about 94 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 620 times the energy of this one.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 6.1 30km ENE of Ensenada, B.C., MX · 47 km SSE of this epicentre
- 5.7 19km ESE of Primo Tapia, B.C., MX · 39 km SW of this epicentre
- 5.6 37km ENE of Ensenada, B.C., MX · 45 km SSE 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 32.3472, -116.4253. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 82 km (51 mi) | NNW | earthquakes near San Diego County |
| Imperial County, CA | 126 km (79 mi) | NE | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
42 earthquakes have been recorded within 50 km since this one.
- 2.1 44km ENE of Ensenada, B.C., MX
- 2.1 44km ENE of Ensenada, B.C., MX
- 3.0 44km ENE of Ensenada, B.C., MX
- 3.4 45km ENE of Ensenada, B.C., MX
- 2.3 44km ENE of Ensenada, B.C., MX
- 1.7 34km NE of Ensenada, B.C., MX
- 1.6 22km ESE of Primo Tapia, B.C., MX
- 2.0 26km E of Ensenada, B.C., MX
- 2.2 25km ENE of Ensenada, B.C., MX
- 2.5 25km ENE of Ensenada, B.C., MX
- 1.9 24km ESE of Primo Tapia, B.C., MX
- 1.8 28km ENE of Ensenada, B.C., MX
- 1.8 44km ENE of Ensenada, B.C., MX
- 2.0 32km NE of Ensenada, B.C., MX
- 1.9 37km NE of Ensenada, 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.