Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Glen Avon, CA
Yes: an earthquake was likely felt in Glen Avon in the last 24 hours. M 1.6, 4 km (2 mi) WNW of Glen Avon, at 6:22 am PST on 12 November 2026 (14:22 UTC); the estimated shaking in Glen Avon was intensity II (weak). Every earthquake near Glen Avon
This page: a magnitude 1.8 earthquake was recorded 3 km (2 mi) north-northeast of Glen Avon, CA, at 7:35 am PDT on 20 September 2024 (14:35 UTC), 11 km deep.
USGS: 3 km NNE of Glen Avon, CA
in Jurupa Valley, CA · 87 km (54 mi) E of Los Angeles, CA
- When
- 7:35 am PDT on 20 September 2024 ()
- Where
- 3 km (2 mi) north-northeast of Glen Avon, CA · earthquakes near Glen Avon
- Magnitude
- M 1.8 (ml)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 49 km SW
- Nearest mapped fault
- San Jacinto fault, 11 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 783 days ago
Earthquake alerts for Glen Avon, CA
Get a notification in this browser when USGS records an earthquake near Glen Avon, CA. No account or email needed.
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, people at rest would likely notice it out to about 9 km (6 mi) from the epicentre. In Glen Avon, 3 km away, the estimate is intensity II (weak). 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.
Likely felt in: Pedley 6 km, intensity II · Rubidoux 7 km, intensity II · Fontana 7 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 870,000× the energy of this one
- Magna, Utah 2020 M 5.7 620,000× the energy of this one
- Around the size people start to feel M 3.0 55× the energy of this one
- This earthquake M 1.8 about 17 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 4.4 on 2018-08-29 — about 6,500 times the energy of this one.
Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.2 3 km SE of San Bernardino, California · 21 km ENE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 38 km S of this epicentre
- 5.6 7km ENE of Running Springs, CA · 46 km ENE of this epicentre
- 5.5 The 1990 Upland, California Earthquake · 24 km WNW of this epicentre
- 5.4 5km S of Chino Hills, CA · 29 km WSW 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 34.0327, -117.4717. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 49 km (30 mi) | SW | earthquakes near Orange County |
| Los Angeles County, CA | 75 km (47 mi) | WNW | earthquakes near Los Angeles County |
| San Diego County, CA | 129 km (80 mi) | SSE | earthquakes near San Diego County |
| San Bernardino County, CA | 150 km (93 mi) | NE | earthquakes near San Bernardino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.7 5 km SSE of Home Gardens, CA
- 1.7 5 km W of Lytle Creek, CA
- 1.5 6 km SE of Ontario, CA
- 1.5 5 km SE of Loma Linda, CA
- 2.8 4 km SE of Ontario, CA
- 1.7 5 km SE of Ontario, CA
- 2.8 2 km WSW of Loma Linda, CA
- 1.7 11 km NE of Yucaipa, CA
- 2.1 5 km SE of Ontario, CA
- 1.6 10 km ENE of Yucaipa, CA
- 2.3 5 km SE of Ontario, CA
- 1.6 5 km SE of Home Gardens, CA
- 1.7 4 km ESE of Yorba Linda, CA
- 1.7 7 km S of Redlands, CA
- 1.7 3 km SE of Ontario, 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.