Earthquake near Yorba Linda, CA

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 9 km (6 mi) from the epicentre. In Yorba Linda, 4 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: Yorba Linda 4 km, intensity II · Placentia 4 km, intensity II · Orange 8 km, intensity II · Anaheim 8 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 11 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.

1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
3. Around the size people start to feel M 3.0 83× the energy of this one
4. This earthquake M 1.7 about 11 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:

1. 6.4 The 1933 Long Beach, California Earthquake · 30 km SSW of this epicentre Mar 11, 1933
2. 6.0 The 1910 Lake Elsinore, California Earthquake · 43 km ESE of this epicentre May 15, 1910
3. 5.9 The 1987 Whittier Narrows, California Earthquake · 32 km NW of this epicentre Oct 1, 1987
4. 5.8 The 1991 Sierra Madre, California Earthquake · 48 km NNW of this epicentre Jun 28, 1991
5. 5.5 The 1990 Upland, California Earthquake · 34 km NNE of this epicentre Feb 28, 1990

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 33.8592, -117.8282. Map © OpenStreetMap contributors.

Nearby places

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

55 earthquakes have been recorded within 50 km since this one.

1. 1.9 6km ESE of Ontario, CA 15:29 UTC
2. 2.1 3km W of East Los Angeles, CA 11:52 UTC
3. 1.8 4km NNW of Seal Beach, CA 00:05 UTC
4. 1.6 1km SSW of Laguna Niguel, CA 06:56 UTC
5. 1.9 3km S of Newport Beach, CA 07:35 UTC
6. 1.8 1km ENE of Inglewood, CA 08:10 UTC
7. 2.2 2km ENE of Inglewood, CA 06:45 UTC
8. 2.4 1km ENE of Brea, CA 22:36 UTC
9. 1.7 7km WSW of Huntington Beach, CA 11:08 UTC
10. 1.6 2km N of Costa Mesa, CA 20:45 UTC
11. 2.1 7km WSW of Huntington Beach, CA 04:56 UTC
12. 1.6 4km SE of Home Gardens, CA 15:57 UTC
13. 1.9 8km WSW of Lytle Creek, CA 10:55 UTC
14. 1.7 6km SW of Chino Hills, CA 01:32 UTC
15. 1.6 4km N of Yorba Linda, CA 16:59 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 06:26 UTC. 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.