Earthquake · reviewed by a seismologist
M 4.1mw
Earthquake near Corona, CA
No earthquake was likely felt in Corona in the 24 hours to 5:48 am PST (13:48 UTC). The last one was M 1.6, 9 km (6 mi) SE, at 1:57 pm PST on 6 November 2026, estimated intensity II (weak) in town. Every earthquake near Corona
This page: a magnitude 4.1 earthquake was recorded 10 km (6 mi) southwest of Corona, CA, at 1:49 pm PDT on 1 May 2024 (20:49 UTC), 4.6 km deep. 8,407 people have reported feeling it to USGS.
USGS: 10 km SW of Corona, CA
9 km (6 mi) SW of Corona, CA · 74 km (46 mi) ESE of Los Angeles, CA
- When
- 1:49 pm PDT on 1 May 2024 ()
- Where
- 10 km (6 mi) southwest of Corona, CA · earthquakes near Corona
- Magnitude
- M 4.1 (mw)
- Depth
- 4.6 km below the surface
- Felt
- 8,407 reports · strongest reported intensity IV
- Measured shaking
- intensity V (ShakeMap)
- USGS impact alert
- green
- Tsunami
- USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
- Nearest
- Orange County, 19 km SW
- Nearest mapped fault
- Elsinore fault, 5 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 209 days ago
Earthquake alerts for Corona, CA
Get a notification in this browser when USGS records an earthquake near Corona, 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 light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 105 km (65 mi) from the epicentre. In Corona, 10 km away, the estimate is intensity IV (light). 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: Corona 10 km, intensity IV · North Tustin 15 km, intensity IV · Norco 16 km, intensity IV · Yorba Linda 18 km, intensity III · Tustin 18 km, intensity III · Eastvale 18 km, intensity III · Lake Forest 19 km, intensity III · Rancho Santa Margarita 19 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 22 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 7,700× the energy of this one
- Mineral, Virginia 2011 M 5.8 340× the energy of this one
- Magna, Utah 2020 M 5.7 240× the energy of this one
- This earthquake M 4.1 about 22 tons of TNT
- Around the size people start to feel M 3.0 this one released 46× 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 2020-09-19 — about 4.4 times the energy of this one.
Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1933 Long Beach, California Earthquake · 38 km WSW of this epicentre
- 6.2 3 km SE of San Bernardino, California · 47 km NE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 26 km ESE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 49 km NW of this epicentre
- 5.5 The 1990 Upland, California Earthquake · 37 km N 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 33.8112, -117.6445. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 19 km (12 mi) | SW | earthquakes near Orange County |
| Los Angeles County, CA | 71 km (44 mi) | NW | earthquakes near Los Angeles County |
| San Diego County, CA | 119 km (74 mi) | SE | earthquakes near San Diego County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.5 4 km SSW of Westminster, CA
- 1.5 6 km NW of Mira Loma, CA
- 1.7 8 km WSW of Calimesa, CA
- 1.7 2 km NE of Newport Beach, CA
- 2.2 7 km SSE of Loma Linda, CA
- 1.8 4 km SE of Loma Linda, CA
- 1.8 5 km SSW of Redlands, CA
- 1.7 5 km SSW of Redlands, CA
- 1.6 5 km SSW of Redlands, CA
- 1.6 5 km SSW of Redlands, CA
- 1.7 4 km SE of Loma Linda, CA
- 1.7 3 km SSE of Costa Mesa, CA
- 3.4 3 km ENE of Newport Beach, CA
- 3.6 2 km NE of Newport Beach, CA
- 2.8 3 km NE of Newport Beach, 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.