QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Yorba Linda, CA

No earthquake was likely felt in Yorba Linda in the 24 hours to 5:08 am PST (13:08 UTC). The last one was M 1.8, 5 km (3 mi) ESE, at 9:16 pm PST on 3 November 2026, estimated intensity II (weak) in town. Every earthquake near Yorba Linda

This page: a magnitude 2.2 earthquake was recorded 8 km (5 mi) east of Yorba Linda, CA, at 7:42 pm PST on 26 February 2020 (03:42 UTC), 7.5 km deep. 4 people have reported feeling it to USGS.

USGS: 8 km E of Yorba Linda, CA

in Anaheim, CA

7:42 pm PST, Feb 26, 2020 · · 7.5 km deep · released about 52 lb of TNT

Every earthquake near Yorba Linda Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 23 kmLos Angeles County 60 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
7:42 pm PST on 26 February 2020 ()
Where
8 km (5 mi) east of Yorba Linda, CA · earthquakes near Yorba Linda
Magnitude
M 2.2 (ml)
Depth
7.5 km below the surface
Felt
4 reports · strongest reported intensity II
Nearest
Orange County, 23 km S
Nearest mapped fault
Elsinore fault, 1 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 1057 days ago

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 16 km (10 mi) from the epicentre. In Yorba Linda, 8 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 8 km, intensity II · Chino Hills 13 km, intensity II · Placentia 13 km, intensity II · North Tustin 14 km, intensity II · Corona 15 km, intensity II · Chino 15 km, intensity II · Orange 15 km, intensity II · Brea 16 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 52 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.

  1. Mineral, Virginia 2011 M 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 2,100 times the energy of this one.

Before 2016, the USGS record lists 17 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 The 1933 Long Beach, California Earthquake · 37 km SW of this epicentre
  2. 6.2 3 km SE of San Bernardino, California · 49 km ENE of this epicentre
  3. 6.0 The 1910 Lake Elsinore, California Earthquake · 36 km ESE of this epicentre
  4. 5.9 The 1987 Whittier Narrows, California Earthquake · 38 km WNW of this epicentre
  5. 5.8 The 1991 Sierra Madre, California Earthquake · 50 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 33.8803, -117.7283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 23 km (14 mi) S earthquakes near Orange County
Los Angeles County, CA 60 km (38 mi) NW earthquakes near Los Angeles County
San Diego County, CA 130 km (81 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

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

  1. 1.5 2 km SSW of Brea, CA
  2. 1.5 2km ESE of Home Gardens, CA
  3. 1.5 7km SSW of Lytle Creek, CA
  4. 2.0 0km SSW of South El Monte, CA
  5. 1.7 6km SSW of Redlands, CA
  6. 1.9 6 km SSE of Home Gardens, CA
  7. 1.7 2km SSE of Loma Linda, CA
  8. 1.6 3km ESE of Home Gardens, CA
  9. 1.5 12km ENE of North Tustin, CA
  10. 1.7 7km NNE of Fontana, CA
  11. 1.7 3km NNE of Montebello, CA
  12. 1.7 10km WSW of Corona, CA
  13. 2.1 4km SW of Lytle Creek, CA
  14. 1.7 0km NW of Loma Linda, CA
  15. 1.5 2km S 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.