QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Klamath Falls, OR

No earthquake was likely felt in Klamath Falls in the 24 hours to 10:55 am PST (18:55 UTC). The last one was M 1.9, 10 km (7 mi) NNW, at 1:58 pm PDT on 13 August 2026, estimated intensity II (weak) in town. Every earthquake near Klamath Falls

This page: a magnitude 1.8 earthquake was recorded 20 km (12 mi) west of Klamath Falls, OR, at 2:23 am PST on 28 November 2022 (10:23 UTC), 19 km deep.

USGS: 20 km W of Klamath Falls, Oregon

2:23 am PST, Nov 28, 2022 · · 19 km deep · released about 14 lb of TNT

Every earthquake near Klamath Falls Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jackson County 58 kmKlamath County 61 kmSiskiyou County 81 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
2:23 am PST on 28 November 2022 ()
Where
20 km (12 mi) west of Klamath Falls, OR · earthquakes near Klamath Falls
Magnitude
M 1.8 (ml)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Jackson County, 58 km WNW
Nearest mapped fault
Sky Lakes fault, 2 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 1446 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 Klamath Falls, 20 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: Altamont.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 3 earthquakes of M5 or more within 50 km:

  1. 6.0 27 km WNW of Klamath Falls, Oregon · 17 km N of this epicentre
  2. 5.9 22 km WNW of Klamath Falls, Oregon · 12 km N of this epicentre
  3. 5.1 20 km WNW of Klamath Falls, Oregon · 9 km N 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 42.2092, -122.0243. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jackson County, OR 58 km (36 mi) WNW earthquakes near Jackson County
Klamath County, OR 61 km (38 mi) NNE earthquakes near Klamath County
Siskiyou County, CA 81 km (50 mi) SSW earthquakes near Siskiyou County
Modoc County, CA 128 km (80 mi) ESE earthquakes near Modoc County
Douglas County, OR 151 km (94 mi) NW earthquakes near Douglas County

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

Aftershocks so far

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

  1. 1.0 18 km WNW of Klamath Falls, Oregon
  2. 1.9 10 km NNW of Klamath Falls, Oregon
  3. 2.1 5 km SSW of Merrill, Oregon
  4. 2.0 11 km NNW of Klamath Falls, Oregon
  5. 2.0 26 km ENE of Hornbrook, CA
  6. 1.6 11 km NNW of Klamath Falls, Oregon
  7. 2.2 5 km W of Merrill, Oregon
  8. 1.6 23 km WSW of Klamath Falls, Oregon
  9. 1.6 25 km WNW of Klamath Falls, Oregon
  10. 1.8 16 km ESE of Dorris, California
  11. 2.5 6 km NW of Macdoel, CA
  12. 1.7 10 km NNW of Klamath Falls, Oregon
  13. 1.7 26 km WNW of Klamath Falls, Oregon
  14. 1.6 10 km WSW of Klamath Falls, Oregon
  15. 1.5 22 km E of Ashland, Oregon

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.