Earthquake · automatic estimate, may change
M 1.1ml
Earthquake near Imperial, CA
USGS: 3 km SW of Imperial, CA
- When
- 11:07 pm PDT on 1 October 2026 ()
- Where
- 3 km (2 mi) SW of Imperial, CA · earthquakes near Imperial
- Magnitude
- M 1.1 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Imperial County, 32 km NE
- Nearest mapped fault
- Brawley Seismic Zone, 9 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 20 hours ago
A magnitude 1.1 earthquake was recorded 3 km (2 mi) SW of Imperial, CA, at 11:07 pm PDT on 1 October 2026 (06:07 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: El Centro, Seeley, Heber, Brawley, Calexico, Holtville.
How big was it?
This earthquake released about 1.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 11,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 7,900,000× the energy of this one
- Around the size people start to feel M 3.0 710× the energy of this one
- This earthquake M 1.1 about 1.3 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 5.3 on 2021-06-05 — about 1,700,000 times the energy of this one.
Before 2016, the USGS record lists 41 earthquakes of M5 or more within 50 km; the five largest:
- 6.9 The 1940 Imperial Valley, California Earthquake · 19 km E of this epicentre
- 6.6 The 1942 Fish Creek Mountains, California Earthquake · 25 km NW of this epicentre
- 6.6 The 1987 Superstition Hills, California Earthquake · 32 km NW of this epicentre
- 6.4 The 1979 Imperial Valley Earthquake, California-Baja California · 28 km SE of this epicentre
- 6.3 The 1906 Imperial Valley, California Earthquake · 11 km NE 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 32.8290, -115.5853. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Imperial County, CA | 32 km (20 mi) | NE | earthquakes near Imperial County |
| Riverside County, CA | 107 km (67 mi) | NNW | earthquakes near Riverside County |
| San Diego County, CA | 113 km (70 mi) | WNW | earthquakes near San Diego County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| location | 3 km NW of Imperial, CA | 3 km SW of Imperial, CA | |
| longitude | -115.6 | -115.59 | |
| latitude | 32.86 | 32.83 | |
| depth | 14 | 12.01 | |
| magnitude | 1.13 | 1.1 |
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.