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 5:23 am PST (13:23 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 in Medford, OR, at 12:28 pm PDT on 5 May 2017 (19:28 UTC), less than 1 km deep. 1 person has reported feeling it to USGS.

USGS: 1 km ENE of Medford, Oregon

in Medford, OR

12:28 pm PDT, May 5, 2017 · · -1.1 km deep · released about 51 lb of TNT

10 km30 km60 km120 km N Jackson County 17 kmJosephine County 59 kmSiskiyou County 87 kmKlamath County 107 kmDouglas County 109 kmCurry County 112 kmDel Norte County 113 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
12:28 pm PDT on 5 May 2017 ()
Where
in Medford, OR · earthquakes near Medford
Magnitude
M 2.1 (ml)
Depth
-1.1 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Jackson County, 17 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1559 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. 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: Central Point, Phoenix, Jacksonville, Talent, White City, Eagle Point.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 51 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 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× 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 51 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 42.3323, -122.8553. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jackson County, OR 17 km (11 mi) ENE earthquakes near Jackson County
Josephine County, OR 59 km (37 mi) W earthquakes near Josephine County
Siskiyou County, CA 87 km (54 mi) SSE earthquakes near Siskiyou County
Klamath County, OR 107 km (66 mi) ENE earthquakes near Klamath County
Douglas County, OR 109 km (68 mi) NNW earthquakes near Douglas County
Curry County, OR 112 km (70 mi) W earthquakes near Curry County

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

Aftershocks so far

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

  1. 2.1 5 km E of Medford, Oregon
  2. 1.6 Oregon
  3. 1.5 3 km WNW of Butte Falls, Oregon
  4. 1.9 3 km NW of Butte Falls, Oregon
  5. 1.9 7 km SSE of White City, Oregon
  6. 1.7 5 km E of Medford, Oregon
  7. 1.7 3 km SE of Eagle Point, Oregon
  8. 1.6 13 km SW of Ashland, Oregon
  9. 1.8 2 km SW of White City, Oregon
  10. 1.9 5 km SSE of Eagle Point, Oregon
  11. 1.9 6 km SSW of Shady Cove, Oregon
  12. 1.9 3 km ESE of New Hope, Oregon
  13. 2.0 3 km SE of Eagle Point, Oregon
  14. 1.9 6 km SSW of Shady Cove, Oregon
  15. 1.9 4 km SSW of Jacksonville, 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.