Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Corona, CA
No earthquake was likely felt in Corona in the 24 hours to 4:44 am PST (12:44 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 1.5 earthquake was recorded 7 km (5 mi) west-southwest of Corona, CA, at 3:34 pm PST on 28 December 2025 (23:34 UTC), 9.1 km deep.
USGS: 7 km WSW of Corona, CA
7 km (4 mi) WSW of Corona, CA · 74 km (46 mi) ESE of Los Angeles, CA
- When
- 3:34 pm PST on 28 December 2025 ()
- Where
- 7 km (5 mi) west-southwest of Corona, CA · earthquakes near Corona
- Magnitude
- M 1.5 (ml)
- Depth
- 9.1 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 23 km SW
- Nearest mapped fault
- Elsinore fault, 2 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 318 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 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 5 km (3 mi) from the epicentre. In Corona, 7 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, Home Gardens, Norco, Eastvale, Los Serranos, Villa Park.
How big was it?
This earthquake released about 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
- Around the size people start to feel M 3.0 160× the energy of this one
- This earthquake M 1.5 about 5.9 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 33,000 times the energy of this one.
Before 2016, the USGS record lists 14 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1933 Long Beach, California Earthquake · 41 km SW of this epicentre
- 6.2 3 km SE of San Bernardino, California · 44 km NE of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 27 km SE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 47 km WNW of this epicentre
- 5.5 The 1990 Upland, California Earthquake · 34 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 33.8440, -117.6360. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 23 km (14 mi) | SW | earthquakes near Orange County |
| Los Angeles County, CA | 70 km (43 mi) | NW | earthquakes near Los Angeles County |
| San Diego County, CA | 121 km (75 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
51 earthquakes have been recorded within 50 km since this one.
- 1.9 7 km N of Fontana, CA
- 1.7 1 km ESE of Loma Linda, CA
- 1.9 5 km SE of Loma Linda, CA
- 1.8 3 km ESE of Loma Linda, CA
- 1.7 3 km ESE of Loma Linda, CA
- 1.6 3 km ESE of Loma Linda, CA
- 1.8 3 km SE of Loma Linda, CA
- 1.8 1 km SE of Baldwin Park, CA
- 1.6 4 km SSW of Redlands, CA
- 1.7 2 km WSW of Pomona, CA
- 1.9 4 km W of Devore, CA
- 1.8 3 km NNE of Fontana, CA
- 2.1 3 km NE of Wildomar, CA
- 1.9 5 km ENE of Muscoy, CA
- 1.9 7 km SSE 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.