QuakeIndex

explosion · reviewed by a seismologist

M 2.1ml

Earthquake near Medford, OR

No earthquake was likely felt in Medford in the 24 hours to 12:26 am PST (08:26 UTC). The last one was M 2.3, 6 km (3 mi) ENE, at 4:47 pm PDT on 13 October 2026, estimated intensity III (weak) in town. Every earthquake near Medford

No: USGS classifies this as a explosion, not an earthquake. A magnitude 2.1 explosion was recorded 7 km (4 mi) northeast of Medford, OR, at 5:26 pm PST on 23 February 2016 (01:26 UTC), less than 1 km deep. 1 person has reported feeling it to USGS.

USGS: 7 km NE of Medford, Oregon

5 km (3 mi) NNE of Medford, OR

5:26 pm PST, Feb 23, 2016 · · -0.7 km deep · released about 49 lb of TNT

10 km30 km60 km120 km N Jackson County 12 kmJosephine County 62 kmSiskiyou County 91 kmKlamath County 102 kmDouglas County 105 kmCurry County 115 kmDel Norte County 119 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
5:26 pm PST on 23 February 2016 ()
Where
7 km (4 mi) northeast of Medford, OR · earthquakes near Medford
Magnitude
M 2.1 (ml)
Depth
-0.7 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Jackson County, 12 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1564 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 Medford, 7 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: White City, Central Point, Eagle Point, Phoenix, Jacksonville, Talent.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 49 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 42.3748, -122.8182. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jackson County, OR 12 km (8 mi) ENE earthquakes near Jackson County
Josephine County, OR 62 km (38 mi) W earthquakes near Josephine County
Siskiyou County, CA 91 km (56 mi) SSE earthquakes near Siskiyou County
Klamath County, OR 102 km (63 mi) ENE earthquakes near Klamath County
Douglas County, OR 105 km (65 mi) NNW earthquakes near Douglas County
Curry County, OR 115 km (71 mi) W earthquakes near Curry County

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

Aftershocks so far

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

  1. 1.6 13 km SW of Ashland, Oregon
  2. 1.8 2 km SW of White City, Oregon
  3. 1.9 5 km SSE of Eagle Point, Oregon
  4. 1.9 6 km SSW of Shady Cove, Oregon
  5. 1.9 3 km ESE of New Hope, Oregon
  6. 2.0 3 km SE of Eagle Point, Oregon
  7. 1.9 6 km SSW of Shady Cove, Oregon
  8. 1.9 4 km SSW of Jacksonville, Oregon
  9. 1.9 4 km SE of Eagle Point, Oregon
  10. 1.8 5 km SSW of Shady Cove, Oregon
  11. 2.1 5 km ENE of Medford, Oregon
  12. 1.6 Oregon
  13. 1.7 8 km NE of Phoenix, Oregon
  14. 1.9 5 km SE of Eagle Point, Oregon
  15. 1.6 3 km SE of Eagle Point, 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.