Earthquake · automatic estimate, may change
M 1.0ml
Earthquake near Big Bear City, CA
USGS: 9 km NNW of Big Bear City, CA
36 km (23 mi) NE of Highland, CA · 145 km (90 mi) ENE of Los Angeles, CA
- When
- 9:14 am PDT on 30 September 2026 ()
- Where
- 9 km (6 mi) NNW of Big Bear City, CA · earthquakes near Big Bear City
- Magnitude
- M 1.0 (ml)
- Depth
- -0.8 km below the surface
- Felt
- no reports yet
- Nearest
- San Bernardino County, 86 km NE
- Nearest mapped fault
- Helendale-South Lockhart fault, 3 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 2 days ago
A magnitude 1.0 earthquake was recorded 9 km (6 mi) NNW of Big Bear City, CA, at 9:14 am PDT on 30 September 2026 (16:14 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Big Bear Lake, Lucerne Valley, Running Springs.
How big was it?
This earthquake released about 0.92 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 16,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 12,000,000× the energy of this one
- Around the size people start to feel M 3.0 1,000× the energy of this one
- This earthquake M 1.0 about 0.92 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 4.5 on 2018-05-08 — about 180,000 times the energy of this one.
Before 2016, the USGS record lists 25 earthquakes of M5 or more within 50 km; the five largest:
- 7.3 The 1992 Landers, California Earthquake · 44 km ESE of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 16 km SSE of this epicentre
- 6.2 3 km SE of San Bernardino, California · 45 km SW of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 45 km SSE of this epicentre
- 5.8 3km NE of Yucca Valley, California · 49 km ESE 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 34.3398, -116.8800. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Bernardino County, CA | 86 km (53 mi) | NE | earthquakes near San Bernardino County |
| Riverside County, CA | 106 km (66 mi) | SE | earthquakes near Riverside County |
| Orange County, CA | 111 km (69 mi) | SW | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
7 earthquakes have been recorded within 50 km since this one.
- 1.4 7 km N of Big Bear City, CA
- 1.2 7 km N of Beaumont, CA
- 1.1 11 km E of Yucaipa, CA
- 0.8 13 km NNW of Cabazon, CA
- 0.8 12 km N of Cabazon, CA
- 1.0 2 km SSE of Loma Linda, CA
- 1.3 5 km NNW of Running Springs, 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.
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.