QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Orland, CA

No earthquake was likely felt in Orland in the 24 hours to 11:11 pm PST (07:11 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 2.0 earthquake was recorded 39 km (24 mi) west of Orland, CA, at 6:24 am PDT on 23 March 2019 (13:24 UTC), 14 km deep.

USGS: 11km NE of Alder Springs, CA

71 km (44 mi) W of Chico, CA

6:24 am PDT, Mar 23, 2019 · · 14 km deep · released about 31 lb of TNT

10 km30 km60 km120 km N Glenn County 25 kmTehama County 56 kmLake County 70 kmColusa County 71 kmMendocino County 76 kmButte County 90 kmTrinity County 109 kmSutter County 112 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
6:24 am PDT on 23 March 2019 ()
Where
39 km (24 mi) west of Orland, CA · earthquakes near Orland
Magnitude
M 2.0 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Glenn County, 25 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2788 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 7 km (4 mi) from the epicentre. In Orland, 39 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.

How big was it?

This earthquake released about 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 5.1 on 2016-08-10 — about 42,000 times the energy of this one.

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 39.7305, -122.6463. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Glenn County, CA 25 km (16 mi) SE earthquakes near Glenn County
Tehama County, CA 56 km (35 mi) NE earthquakes near Tehama County
Lake County, CA 70 km (43 mi) S earthquakes near Lake County
Colusa County, CA 71 km (44 mi) SSE earthquakes near Colusa County
Mendocino County, CA 76 km (47 mi) WSW earthquakes near Mendocino County
Butte County, CA 90 km (56 mi) E earthquakes near Butte County

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

Aftershocks so far

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

  1. 2.9 15km N of Lake Pillsbury, CA
  2. 1.9 21km W of Rancho Tehama Reserve, CA
  3. 1.7 8km ENE of Covelo, CA
  4. 1.9 19km NNW of Alder Springs, CA
  5. 1.8 20km NNW of Alder Springs, CA
  6. 2.4 14km NW of Alder Springs, CA
  7. 1.8 23km WNW of Alder Springs, CA
  8. 2.1 6km N of Lake Pillsbury, CA
  9. 1.9 18km NE of Upper Lake, CA
  10. 1.8 16km NW of Alder Springs, CA
  11. 1.8 8km N of Lake Pillsbury, CA
  12. 1.6 1km ENE of Lake Pillsbury, CA
  13. 2.4 8km N of Lake Pillsbury, CA
  14. 1.6 9km SSE of Lake Pillsbury, CA
  15. 1.6 24km W of Rancho Tehama Reserve, 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.