Earthquake · reviewed by a seismologist
M 2.2ml
Earthquake near Corona, CA
No earthquake was likely felt in Corona in the 24 hours to 6:52 am PST (14:52 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 2.2 earthquake was recorded 9 km (6 mi) southwest of Corona, CA, at 6:56 am PDT on 21 March 2019 (13:56 UTC), 5.2 km deep.
USGS: 9km SW of Corona, CA
8 km (5 mi) SW of Corona, CA · 75 km (47 mi) ESE of Los Angeles, CA
- When
- 6:56 am PDT on 21 March 2019 ()
- Where
- 9 km (6 mi) southwest of Corona, CA · earthquakes near Corona
- Magnitude
- M 2.2 (ml)
- Depth
- 5.2 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 20 km SW
- Nearest mapped fault
- Elsinore fault, 4 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 2793 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 18 km (11 mi) from the epicentre. In Corona, 9 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: Corona 9 km, intensity II · Norco 15 km, intensity II · North Tustin 15 km, intensity II · Eastvale 18 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 64 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
- Magna, Utah 2020 M 5.7 170,000× the energy of this one
- Around the size people start to feel M 3.0 15× the energy of this one
- This earthquake M 2.2 about 64 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 4.4 on 2018-08-29 — about 1,700 times the energy of this one.
Before 2016, the USGS record lists 13 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1933 Long Beach, California Earthquake · 39 km WSW of this epicentre
- 6.2 3 km SE of San Bernardino, California · 46 km NE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 25 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 33.8150, -117.6380. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 20 km (13 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
59 earthquakes have been recorded within 50 km since this one.
- 1.8 8km S of Wildomar, CA
- 1.5 0km NNW of Paramount, CA
- 1.8 4km SE of Home Gardens, CA
- 2.6 6km ENE of North Tustin, CA
- 1.8 1km SW of Norwalk, CA
- 1.6 6km ENE of North Tustin, CA
- 1.6 7km NW of Glen Avon, CA
- 1.5 1km ESE of Loma Linda, CA
- 2.1 4km ENE of Brea, CA
- 1.8 6km WSW of Huntington Beach, CA
- 1.6 4km E of Newport Beach, CA
- 1.6 2km NNW of Valinda, CA
- 1.7 1km ENE of Bellflower, CA
- 2.1 4km ENE of Colton, CA
- 2.0 7km N of Moreno Valley, 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.