Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Corona, CA
No earthquake was likely felt in Corona in the 24 hours to 6:03 am PST (14:03 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 1.7 earthquake was recorded 12 km (7 mi) southwest of Corona, CA, at 1:06 pm PDT on 17 March 2024 (20:06 UTC), 3.9 km deep.
USGS: 11 km SW of Corona, CA
11 km (7 mi) SW of Corona, CA · 76 km (47 mi) ESE of Los Angeles, CA
- When
- 1:06 pm PDT on 17 March 2024 ()
- Where
- 12 km (7 mi) southwest of Corona, CA · earthquakes near Corona
- Magnitude
- M 1.7 (ml)
- Depth
- 3.9 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 18 km SW
- Nearest mapped fault
- Elsinore fault, 7 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 969 days ago
Earthquake alerts for Corona, CA
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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 11 km (7 mi) from the epicentre. In Corona, 12 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.
Earthquakes near other towns within 30 km: El Cerrito Corona, North Tustin, Trabuco Canyon, Home Gardens, Villa Park, Lake Forest.
How big was it?
This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 95× the energy of this one
- This earthquake M 1.7 about 10 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 2020-09-19 — about 19,000 times the energy of this one.
Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1933 Long Beach, California Earthquake · 37 km WSW of this epicentre
- 6.2 3 km SE of San Bernardino, California · 49 km NE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 24 km ESE of this epicentre
- 5.5 The 1990 Upland, California Earthquake · 40 km N of this epicentre
- 5.4 5km S of Chino Hills, CA · 21 km NNW 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 33.7878, -117.6408. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 18 km (11 mi) | SW | earthquakes near Orange County |
| Los Angeles County, CA | 73 km (45 mi) | NW | earthquakes near Los Angeles County |
| San Diego County, CA | 117 km (73 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
52 earthquakes have been recorded within 50 km since this one.
- 1.7 9 km N of Rancho Cucamonga, CA
- 1.7 3 km SE of Loma Linda, CA
- 1.6 6 km SSW of Lytle Creek, CA
- 1.7 6 km SSW of Lytle Creek, CA
- 1.7 6 km SSW of Lytle Creek, CA
- 1.7 9 km SW of Corona, CA
- 1.8 9 km SW of Corona, CA
- 1.8 10 km NNW of Rancho Cucamonga, CA
- 2.0 3 km E of Fontana, CA
- 2.3 9 km SW of Corona, CA
- 2.3 9 km SW of Corona, CA
- 1.7 9 km SW of Corona, CA
- 1.5 8 km SW of Corona, CA
- 2.1 9 km SW of Corona, CA
- 1.9 9 km SW of Corona, 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.