QuakeIndex

explosion · reviewed by a seismologist

M 2.2ml

Earthquake near Klamath Falls, OR

No earthquake was likely felt in Klamath Falls in the 24 hours to 4:27 am PST (12:27 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

No: USGS classifies this as a explosion, not an earthquake. A magnitude 2.2 explosion was recorded 11 km (7 mi) north of Klamath Falls, OR, at 10:05 am PDT on 11 April 2019 (17:05 UTC), less than 1 km deep.

USGS: 11 km N of Klamath Falls, Oregon

10:05 am PDT, Apr 11, 2019 · · -1.4 km deep · released about 56 lb of TNT

Every earthquake near Klamath Falls Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Klamath County 42 kmJackson County 72 kmSiskiyou County 102 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
10:05 am PDT on 11 April 2019 ()
Where
11 km (7 mi) north of Klamath Falls, OR · earthquakes near Klamath Falls
Magnitude
M 2.2 (ml)
Depth
-1.4 km below the surface
Felt
no reports yet
Nearest
Klamath County, 42 km NNE
Nearest mapped fault
Klamath graben fault system, 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 2772 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 Klamath Falls, 11 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.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 56 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 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 · 21 km W of this epicentre
  2. 5.9 22 km WNW of Klamath Falls, Oregon · 18 km W of this epicentre
  3. 5.1 20 km WNW of Klamath Falls, Oregon · 17 km WSW 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 42.3255, -121.8062. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Klamath County, OR 42 km (26 mi) NNE earthquakes near Klamath County
Jackson County, OR 72 km (45 mi) W earthquakes near Jackson County
Siskiyou County, CA 102 km (63 mi) SW earthquakes near Siskiyou County
Modoc County, CA 121 km (75 mi) SE earthquakes near Modoc County
Lake County, OR 127 km (79 mi) ENE earthquakes near Lake County
Douglas County, OR 153 km (95 mi) NW earthquakes near Douglas County

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

Aftershocks so far

46 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. 2.7 10 km E of Bonanza, Oregon
  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. 1.7 10 km NNW of Klamath Falls, Oregon
  12. 1.7 26 km WNW of Klamath Falls, Oregon
  13. 1.6 10 km WSW of Klamath Falls, Oregon
  14. 1.6 7 km WSW of Klamath Falls, Oregon
  15. 2.4 4 km E of Bonanza, 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.