Earthquake · reviewed by a seismologist
M 1.9ml
2km SSW of Heber, CA
- When
- Magnitude
- M 1.9 (ml)
- Depth
- 10 km below the surface
- Felt
- 2 reports
- Nearest
- Imperial County, 40 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1244 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.
How big was it?
This earthquake released about 20 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 5.8 760,000× the energy of this one
- Magna, Utah 2020 M 5.7 540,000× the energy of this one
- Around the size people start to feel M 3.0 48× the energy of this one
- This earthquake M 1.9 about 20 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.
Where
Epicentre 32.7152, -115.5418. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Imperial County, CA | 40 km (25 mi) | SSW of here | earthquakes near Imperial County |
| San Diego County, CA | 120 km (75 mi) | ESE of here | earthquakes near San Diego County |
| Riverside County, CA | 121 km (75 mi) | SSE of here | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 2.3 2km SW of Heber, CA
- 2.2 2km SW of Heber, CA
- 2.8 2km SSW of Heber, CA
- 3.0 2km SW of Heber, CA
- 1.9 3km SW of Heber, CA
- 1.6 3km SW of Heber, CA
- 2.3 4km WNW of Calexico, CA
- 1.7 2km WSW of Heber, CA
- 1.8 3km WNW of Calexico, CA
- 1.8 4km SSW of Heber, CA
- 2.1 3km WNW of Calexico, CA
- 1.6 3km W of Calexico, CA
- 1.5 4km S of Heber, CA
- 1.8 2km SW of Heber, CA
- 1.6 3km WNW of Calexico, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.3 on 2021-06-05 — it released about 110,000 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.