Earthquake · reviewed by a seismologist
M 2.2ml
4km SSW of Heber, CA
- When
- Magnitude
- M 2.2 (ml)
- Depth
- 10 km below the surface
- Felt
- 3 reports · strongest reported intensity II
- Nearest
- Imperial County, 41 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1238 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.
How big was it?
This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
- Magna, Utah 2020 M 5.7 170,000× the energy of this one
- Around the size people start to feel M 3.0 15× the energy of this one
- This earthquake M 2.2 about 62 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 32.7005, -115.5378. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Imperial County, CA | 41 km (26 mi) | SSW of here | earthquakes near Imperial County |
| San Diego County, CA | 121 km (75 mi) | ESE of here | earthquakes near San Diego County |
| Riverside County, CA | 122 km (76 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
49 earthquakes have been recorded within 50 km since this one.
- 2.2 20km ESE of Ocotillo, CA
- 1.8 7km NNW of Delta, B.C., MX
- 1.8 5km NNE of Westmorland, CA
- 1.8 5km NNE of Westmorland, CA
- 1.8 5km NW of Delta, B.C., MX
- 1.7 8km SSW of Holtville, CA
- 1.8 8km SSW of Holtville, CA
- 2.3 3km NW of Delta, B.C., MX
- 1.5 6km SW of Brawley, CA
- 2.1 5km NNW of Delta, B.C., MX
- 2.7 7km NNW of Delta, B.C., MX
- 1.7 7km SW of Holtville, CA
- 1.9 7km SSW of Progreso, B.C., MX
- 1.9 8km NNE of Delta, B.C., MX
- 1.7 14km WSW of Delta, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.3 on 2021-06-05 — it released about 36,000 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.