QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Yucaipa, CA

No earthquake was likely felt in Yucaipa in the 24 hours to 6:04 am PST (14:04 UTC). The last one was M 1.5, 8 km (5 mi) ESE, at 3:54 pm PST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Yucaipa

This page: a magnitude 2.2 earthquake was recorded 13 km (8 mi) northeast of Yucaipa, CA, at 2:45 am PST on 20 February 2020 (10:45 UTC), 5.2 km deep. 1 person has reported feeling it to USGS.

USGS: 13km NE of Yucaipa, CA

13 km (8 mi) NE of Yucaipa, CA · 137 km (85 mi) E of Los Angeles, CA

2:45 am PST, Feb 20, 2020 · · 5.2 km deep · released about 60 lb of TNT

Every earthquake near Yucaipa Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 92 kmRiverside County 95 kmSan Bernardino County 108 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
2:45 am PST on 20 February 2020 ()
Where
13 km (8 mi) northeast of Yucaipa, CA · earthquakes near Yucaipa
Magnitude
M 2.2 (ml)
Depth
5.2 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Orange County, 92 km WSW
Nearest mapped fault
San Andreas 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 2457 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 18 km (11 mi) from the epicentre. In Yucaipa, 13 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: Yucaipa 13 km, intensity II · Big Bear Lake 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 60 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 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 2018-05-08 — about 2,700 times the energy of this one.

Before 2016, the USGS record lists 30 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.3 The 1992 Landers, California Earthquake · 46 km ENE of this epicentre
  2. 6.7 The 1918 San Jacinto, California Earthquake · 38 km S of this epicentre
  3. 6.3 The 1992 Big Bear, California Earthquake · 15 km NE of this epicentre
  4. 6.2 3 km SE of San Bernardino, California · 31 km W of this epicentre
  5. 6.0 The 1986 North Palm Springs, California Earthquake · 32 km ESE 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 34.1015, -116.9268. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 92 km (57 mi) WSW earthquakes near Orange County
Riverside County, CA 95 km (59 mi) ESE earthquakes near Riverside County
San Bernardino County, CA 108 km (67 mi) NE earthquakes near San Bernardino County
San Diego County, CA 121 km (75 mi) S 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. 1.6 10km SW of Idyllwild, CA
  2. 2.5 8km SW of Calimesa, CA
  3. 1.5 6km NW of Calimesa, CA
  4. 1.5 22km N of Yucca Valley, CA
  5. 1.9 10km N of Big Bear City, CA
  6. 1.6 4km SSW of Idyllwild, CA
  7. 1.9 10km NE of Big Bear City, CA
  8. 1.6 1km SW of Devore, CA
  9. 1.6 2km SSW of San Bernardino, CA
  10. 3.0 6km SE of Valle Vista, CA
  11. 2.3 6km SE of Valle Vista, CA
  12. 2.3 6km SE of Valle Vista, CA
  13. 1.7 10km NE of Big Bear City, CA
  14. 1.6 10km NE of Big Bear City, CA
  15. 2.3 5km SE of Loma Linda, 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.