Earthquake · reviewed by a seismologist
M 1.9ml
54km SE of Campo, CA
Yes. A magnitude 1.9 earthquake was recorded 54km SE of Campo, CA, at 1:17 pm PDT on 28 September 2017 (20:17 UTC), 18 km deep.
- When
- Magnitude
- M 1.9 (ml)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- San Diego County, 108 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3304 days ago
Earthquake alerts for Campo, 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 it was probably too small to be felt, even directly above it. 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 25 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 5.8 620,000× the energy of this one
- Magna, Utah 2020 M 5.7 440,000× the energy of this one
- Around the size people start to feel M 3.0 39× the energy of this one
- This earthquake M 1.9 about 25 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 8 earthquakes of M5 or more within 50 km; the five largest:
- 6.8 34km ENE of Maneadero, B.C., MX · 44 km SSW of this epicentre
- 6.1 49 km SSE of Rumorosa, Mexico · 35 km ESE of this epicentre
- 6.1 30km ENE of Ensenada, B.C., MX · 36 km SSW of this epicentre
- 5.8 44km SSW of Progreso, B.C., MX · 35 km E of this epicentre
- 5.6 36km ENE of Maneadero, B.C., MX · 47 km S 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 32.2188, -116.1312. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Diego County, CA | 108 km (67 mi) | NW | earthquakes near San Diego County |
| Imperial County, CA | 117 km (73 mi) | NE | earthquakes near Imperial County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
26 earthquakes have been recorded within 50 km since this one.
- 2.3 36km E of Ensenada, B.C., MX
- 1.9 31km E of Primo Tapia, B.C., MX
- 1.6 33km SSE of Campo, CA
- 1.6 31km E of Primo Tapia, B.C., MX
- 2.0 35km NE of Ensenada, B.C., MX
- 2.5 42km SSE of Tecate, B.C., MX
- 2.7 45km ENE of Maneadero, B.C., MX
- 3.6 44km ENE of Maneadero, B.C., MX
- 2.2 71km ENE of Maneadero, B.C., MX
- 1.8 33km NE of Ensenada, B.C., MX
- 1.6 36km NNE of El Sauzal, B.C., MX
- 3.1 45km ENE of Maneadero, B.C., MX
- 3.7 50km E of Maneadero, B.C., MX
- 2.4 24km NNE of El Sauzal, B.C., MX
- 1.9 42km 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.