Earthquake · reviewed by a seismologist
M 4.0ml
Earthquake near Wildomar, CA
No earthquake was likely felt in Wildomar in the 24 hours to 5:13 am PST (13:13 UTC). The last one was M 2.4, 18 km (11 mi) ESE, at 3:31 am PDT on 5 September 2026, estimated intensity II (weak) in town; 86 felt reports to USGS. Every earthquake near Wildomar
This page: a magnitude 4.0 earthquake was recorded in Wildomar, CA, at 1:21 pm PDT on 10 September 2019 (20:21 UTC), 14 km deep. 4,220 people have reported feeling it to USGS.
USGS: 1km ESE of Wildomar, CA
8 km (5 mi) WNW of Murrieta, CA · 116 km (72 mi) ESE of Los Angeles, CA
- When
- 1:21 pm PDT on 10 September 2019 ()
- Where
- in Wildomar, CA · earthquakes near Wildomar
- Magnitude
- M 4.0 (ml)
- Depth
- 14 km below the surface
- Felt
- 4,220 reports · strongest reported intensity V
- Measured shaking
- intensity VI (ShakeMap)
- Tsunami
- USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
- Nearest
- Orange County, 48 km W
- Nearest mapped fault
- Elsinore fault, under 1 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 577 days ago
Earthquake alerts for Wildomar, CA
Get a notification in this browser when USGS records an earthquake near Wildomar, 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 93 km (58 mi) from the epicentre. 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: Wildomar in town, intensity IV · Murrieta 7 km, intensity III · Lake Elsinore 10 km, intensity III · Temecula 16 km, intensity III · Menifee 19 km, intensity III · Perris 21 km, intensity III · Rancho Santa Margarita 31 km, intensity III · Hemet 32 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 13 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 13,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 580× the energy of this one
- Magna, Utah 2020 M 5.7 410× the energy of this one
- This earthquake M 4.0 about 13 tons of TNT
- Around the size people start to feel M 3.0 this one released 28× 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 4.4 on 2018-08-15 — about 4.7 times the energy of this one.
Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 33 km NE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 17 km NW of this epicentre
- 5.3 6km SSE of Hemet, CA · 33 km ENE of this epicentre
- 5.2 8km ENE of Trabuco Canyon, CA · 25 km WNW of this epicentre
- 5.0 Near Lake Elsinore, California · 17 km NW 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 33.5940, -117.2700. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 48 km (30 mi) | W | earthquakes near Orange County |
| San Diego County, CA | 78 km (49 mi) | SE | earthquakes near San Diego County |
| Los Angeles County, CA | 113 km (70 mi) | NW | earthquakes near Los Angeles County |
| Riverside County, CA | 118 km (74 mi) | E | earthquakes near Riverside County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
35 earthquakes have been recorded within 50 km since this one.
- 1.7 5km SE of Home Gardens, CA
- 2.6 11km WNW of Lake Elsinore, CA
- 1.6 8km ENE of Aguanga, CA
- 1.5 5km SSE of Home Gardens, CA
- 1.7 7km NE of Moreno Valley, CA
- 1.8 6km ENE of North Tustin, CA
- 1.7 1km SW of Calimesa, CA
- 1.6 9km SE of Valle Vista, CA
- 1.6 7km NW of Aguanga, CA
- 1.7 5km NNE of Pala, CA
- 1.6 13km WNW of Anza, CA
- 1.6 5 km SE of Home Gardens, CA
- 1.9 3km NE of San Jacinto, CA
- 1.7 6km SSE of Mentone, CA
- 1.6 3km SE of Home Gardens, 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.