QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

17km W of Dorris, CA

· 10 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Siskiyou County 56 kmJackson County 65 kmKlamath County 86 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
Magnitude
M 1.8 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Siskiyou County, 56 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1500 days ago

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

How big was it?

This earthquake released about 17 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 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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.

Where

Epicentre 41.9915, -122.1197. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Siskiyou County, CA 56 km (35 mi) NE of here earthquakes near Siskiyou County
Jackson County, OR 65 km (41 mi) SE of here earthquakes near Jackson County
Klamath County, OR 86 km (54 mi) SSW of here earthquakes near Klamath County
Modoc County, CA 124 km (77 mi) WNW of here earthquakes near Modoc County

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

Aftershocks so far

37 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. 2.6 23 km WSW of Mount Hebron, CA
  9. 1.6 23 km WSW of Klamath Falls, Oregon
  10. 1.6 25 km WNW of Klamath Falls, Oregon
  11. 1.8 16 km ESE of Dorris, California
  12. 2.5 6 km NW of Macdoel, CA
  13. 1.7 10 km NNW of Klamath Falls, Oregon
  14. 1.7 26 km WNW of Klamath Falls, Oregon
  15. 1.6 10 km WSW of Klamath Falls, 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

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