Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Yucaipa, CA
No earthquake was likely felt in Yucaipa in the 24 hours to 4:54 am PST (12:54 UTC). The last one was M 1.5, 8 km (5 mi) ESE, at 3:54 pm PST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Yucaipa
This page: a magnitude 1.6 earthquake was recorded 4 km (3 mi) west of Yucaipa, CA, at 12:27 pm PST on 30 November 2021 (20:27 UTC), 7.1 km deep.
USGS: 4km W of Yucaipa, CA
in Yucaipa, CA · 122 km (76 mi) E of Los Angeles, CA
- When
- 12:27 pm PST on 30 November 2021 ()
- Where
- 4 km (3 mi) west of Yucaipa, CA · earthquakes near Yucaipa
- Magnitude
- M 1.6 (ml)
- Depth
- 7.1 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 75 km WSW
- Nearest mapped fault
- Crafton Hills fault, 2 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 1808 days ago
Earthquake alerts for Yucaipa, CA
Get a notification in this browser when USGS records an earthquake near Yucaipa, 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 Yucaipa, 4 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: Yucaipa 4 km, intensity II · Mentone 5 km, intensity II · Redlands 9 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 7.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.3 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 4.5 on 2018-05-08 — about 22,000 times the energy of this one.
Before 2016, the USGS record lists 23 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 33 km SSE of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 30 km NE of this epicentre
- 6.2 3 km SE of San Bernardino, California · 16 km WNW of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 48 km SW of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 45 km E 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 34.0412, -117.0898. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 75 km (47 mi) | WSW | earthquakes near Orange County |
| Riverside County, CA | 106 km (66 mi) | ESE | earthquakes near Riverside County |
| Los Angeles County, CA | 109 km (68 mi) | W | earthquakes near Los Angeles County |
| San Diego County, CA | 117 km (73 mi) | SSE | earthquakes near San Diego County |
| San Bernardino County, CA | 123 km (77 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
52 earthquakes have been recorded within 50 km since this one.
- 1.7 3km ENE of Moreno Valley, CA
- 1.5 2km S of Valle Vista, CA
- 3.0 2km SSW of Valle Vista, CA
- 1.7 2km NNW of Loma Linda, CA
- 2.5 11km E of Big Bear City, CA
- 2.4 10km NNW of Idyllwild, CA
- 3.5 10km NNW of Idyllwild, CA
- 1.6 2km ESE of Loma Linda, CA
- 1.6 6km SW of Idyllwild, CA
- 2.0 4km SE of Home Gardens, CA
- 2.0 4km ENE of Colton, CA
- 1.9 1km SE of Loma Linda, CA
- 1.8 8km N of Big Bear City, CA
- 1.6 8km SSE of Home Gardens, CA
- 2.1 2km W of Rancho Cucamonga, 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.