QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

2 km NW of Sheridan, Oregon

· 24 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yamhill County 16 kmPolk County 24 kmTillamook County 46 kmWashington County 54 kmLincoln County 66 kmBenton County 69 kmMarion County 70 kmMultnomah County 91 kmColumbia County 95 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 1.5 (ml)
Depth
24 km below the surface
Felt
no reports yet
Nearest
Yamhill County, 16 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 280 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 45.1172, -123.4147. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yamhill County, OR 16 km (10 mi) SSW of here earthquakes near Yamhill County
Polk County, OR 24 km (15 mi) N of here earthquakes near Polk County
Tillamook County, OR 46 km (29 mi) SE of here earthquakes near Tillamook County
Washington County, OR 54 km (34 mi) SSW of here earthquakes near Washington County
Lincoln County, OR 66 km (41 mi) NE of here earthquakes near Lincoln County
Benton County, OR 69 km (43 mi) N of here earthquakes near Benton County

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

Aftershocks so far

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

  1. 2.0 2 km SE of Amity, Oregon
  2. 1.9 3 km S of Fort Hill, Oregon
  3. 2.6 3 km SE of Rose Lodge, Oregon
  4. 1.9 21 km W of Forest Grove, Oregon
  5. 2.0 7 km WNW of McMinnville, Oregon
  6. 1.7 7 km ESE of Amity, Oregon
  7. 2.0 2 km WNW of Dundee, Oregon
  8. 1.9 7 km S of Dayton, Oregon
  9. 1.6 4 km NE of Falls City, Oregon
  10. 2.1 4 km NE of Lafayette, 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.