QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Amity, OR

No earthquake was likely felt in Amity in the 24 hours to 6:49 pm PST (02:49 UTC). The last one was M 2.0, 2 km (2 mi) SE, at 2:32 pm PDT on 27 July 2026, estimated intensity II (weak) in town. Every earthquake near Amity

This page: a magnitude 1.8 earthquake was recorded in Amity, OR, at 2:20 pm PDT on 18 October 2019 (21:20 UTC), 15 km deep.

USGS: 1 km N of Amity, Oregon

63 km (39 mi) SW of Portland, OR · 27 km (17 mi) NNW of Salem, OR

2:20 pm PDT, Oct 18, 2019 · · 15 km deep · released about 17 lb of TNT

10 km30 km60 km120 km N Yamhill County 15 kmPolk County 30 kmWashington County 48 kmMarion County 56 kmTillamook County 56 kmBenton County 73 kmMultnomah County 77 kmLincoln County 78 kmClackamas County 79 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
2:20 pm PDT on 18 October 2019 ()
Where
in Amity, OR · earthquakes near Amity
Magnitude
M 1.8 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Yamhill County, 15 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2579 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. 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: McMinnville, Dayton, Lafayette, Sheridan, Carlton, Keizer.

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.

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 one earthquake of M5 or more within 50 km:

  1. 5.6 4 km E of Scotts Mills, Oregon · 48 km ESE 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 45.1325, -123.2053. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yamhill County, OR 15 km (10 mi) NW earthquakes near Yamhill County
Polk County, OR 30 km (19 mi) SSW earthquakes near Polk County
Washington County, OR 48 km (30 mi) N earthquakes near Washington County
Marion County, OR 56 km (35 mi) ESE earthquakes near Marion County
Tillamook County, OR 56 km (35 mi) NW earthquakes near Tillamook County
Benton County, OR 73 km (45 mi) SSW earthquakes near Benton County

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

Aftershocks so far

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

  1. 1.8 23 km W of Yamhill, Oregon
  2. 1.5 1 km NW of Wilsonville, Oregon
  3. 1.6 3 km ESE of Sherwood, Oregon
  4. 1.7 4 km ESE of Silverton, Oregon
  5. 1.9 3 km NNE of Hubbard, Oregon
  6. 1.7 Washington-Oregon border region
  7. 1.7 5 km SSW of Saint Paul, Oregon
  8. 1.6 8 km SW of Aloha, Oregon
  9. 1.6 5 km E of Hubbard, Oregon
  10. 1.6 12 km ESE of Hebo, Oregon
  11. 1.6 3 km S of Fort Hill Census Designated Place, Oregon
  12. 1.8 3 km W of Saint Paul, Oregon
  13. 1.9 Oregon
  14. 1.7 8 km SE of Amity, Oregon
  15. 2.0 4 km WNW of Dundee, 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.