Earthquake · reviewed by a seismologist
M 3.4ml
Earthquake near Yucaipa, CA
No earthquake was likely felt in Yucaipa in the 24 hours to 3:43 am PST (11:43 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 3.4 earthquake was recorded 14 km (9 mi) northeast of Yucaipa, CA, at 1:53 pm PDT on 8 June 2018 (20:53 UTC), 4.0 km deep. 133 people have reported feeling it to USGS.
USGS: 14km NE of Yucaipa, CA
14 km (9 mi) NE of Yucaipa, CA · 137 km (85 mi) E of Los Angeles, CA
- When
- 1:53 pm PDT on 8 June 2018 ()
- Where
- 14 km (9 mi) northeast of Yucaipa, CA · earthquakes near Yucaipa
- Magnitude
- M 3.4 (ml)
- Depth
- 4.0 km below the surface
- Felt
- 133 reports · strongest reported intensity IV
- Measured shaking
- intensity V (ShakeMap)
- Nearest
- Orange County, 93 km WSW
- Nearest mapped fault
- San Andreas fault, 3 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 2997 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 58 km (36 mi) from the epicentre. In Yucaipa, 14 km away, the estimate is intensity III (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 14 km, intensity III · Big Bear Lake 14 km, intensity III · Big Bear City 18 km, intensity III · Mentone 20 km, intensity III · Beaumont 21 km, intensity III · Banning 21 km, intensity III · Redlands 25 km, intensity II · Highland 26 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 86,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 3,800× the energy of this one
- Magna, Utah 2020 M 5.7 2,700× the energy of this one
- This earthquake M 3.4 about 2 tons of TNT
- Around the size people start to feel M 3.0 this one released 4.1× more
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 42 times the energy of this one.
Before 2016, the USGS record lists 30 earthquakes of M5 or more within 50 km; the five largest:
- 7.3 The 1992 Landers, California Earthquake · 46 km ENE of this epicentre
- 6.7 The 1918 San Jacinto, California Earthquake · 39 km S of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 13 km NE of this epicentre
- 6.2 3 km SE of San Bernardino, California · 31 km W of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 32 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 34.1145, -116.9237. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 93 km (58 mi) | WSW | earthquakes near Orange County |
| Riverside County, CA | 95 km (59 mi) | ESE | earthquakes near Riverside County |
| San Bernardino County, CA | 107 km (66 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
57 earthquakes have been recorded within 50 km since this one.
- 1.9 5km N of Yucca Valley, CA
- 2.1 6km ENE of Cabazon, CA
- 2.0 1km ESE of Loma Linda, CA
- 1.9 4km WNW of Cabazon, CA
- 2.8 4km WNW of Cabazon, CA
- 2.4 4km WNW of Cabazon, CA
- 1.7 2km NE of Banning, CA
- 1.8 4km WNW of Cabazon, CA
- 1.8 4km WNW of Cabazon, CA
- 3.1 4km WNW of Cabazon, CA
- 1.6 12km NNE of Cabazon, CA
- 1.8 6km N of Cabazon, CA
- 1.5 6km N of Cabazon, CA
- 1.5 3km SE of Yucaipa, CA
- 1.7 5km NNW of Big Bear City, 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.