QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Orland, CA

No earthquake was likely felt in Orland in the 24 hours to 6:45 pm PST (02:45 UTC). The last one was M 4.0, 70 km (44 mi) WSW, at 5:01 am PDT on 28 October 2026, estimated intensity II (weak) in town; 14 felt reports to USGS. Every earthquake near Orland

This page: a magnitude 2.2 earthquake was recorded 15 km (9 mi) southwest of Orland, CA, at 3:31 pm PDT on 2 May 2022 (22:31 UTC), 29 km deep.

USGS: 15km SW of Orland, CA

44 km (27 mi) WSW of Chico, CA · 141 km (87 mi) NNW of Sacramento, CA

3:31 pm PDT, May 2, 2022 · · 29 km deep · released about 69 lb of TNT

10 km30 km60 km120 km N Glenn County 9 kmColusa County 53 kmTehama County 53 kmButte County 61 kmLake County 71 kmSutter County 86 kmYuba County 93 kmMendocino County 100 kmYolo County 113 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
3:31 pm PDT on 2 May 2022 ()
Where
15 km (9 mi) southwest of Orland, CA · earthquakes near Orland
Magnitude
M 2.2 (md)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Glenn County, 9 km SW
Nearest mapped fault
Great Valley thrust fault system, 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 1655 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Orland, 15 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: Willows, Hamilton City.

How big was it?

This earthquake released about 69 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 5.8 220,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 69 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 39.6493, -122.3110. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Glenn County, CA 9 km (6 mi) SW earthquakes near Glenn County
Colusa County, CA 53 km (33 mi) S earthquakes near Colusa County
Tehama County, CA 53 km (33 mi) N earthquakes near Tehama County
Butte County, CA 61 km (38 mi) E earthquakes near Butte County
Lake County, CA 71 km (44 mi) SSW earthquakes near Lake County
Sutter County, CA 86 km (53 mi) SE earthquakes near Sutter County

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

Aftershocks so far

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

  1. 1.9 25 km WSW of Rancho Tehama Reserve, CA
  2. 2.2 7 km ENE of Hamilton City, CA
  3. 2.5 18 km N of Alder Springs, CA
  4. 2.4 18 km E of Willows, CA
  5. 2.6 15 km ENE of Willows, CA
  6. 2.1 18km E of Willows, CA
  7. 2.2 18km E of Willows, CA
  8. 2.1 8km WSW of Durham, CA
  9. 1.9 13km WNW of Alder Springs, CA
  10. 2.3 14km S of Hamilton City, CA
  11. 2.3 30km N of Alder Springs, CA
  12. 1.9 21km W of Rancho Tehama Reserve, CA
  13. 1.9 3km NW of Chico, CA
  14. 2.1 12km NW of Alder Springs, CA
  15. 2.4 11km NW of Alder Springs, 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.