QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Estacada, OR

No earthquake was likely felt in Estacada in the 24 hours to 12:51 am PST (08:51 UTC). The last one was M 2.0, 3 km (2 mi) NE, at 1:30 pm PST on 12 November 2024, estimated intensity II (weak) in town; 2 felt reports to USGS. Every earthquake near Estacada

This page: a magnitude 1.7 earthquake was recorded 14 km (9 mi) south of Estacada, OR, at 10:11 pm PDT on 12 July 2023 (05:11 UTC), 13 km deep.

USGS: 13 km S of Estacada, Oregon

49 km (30 mi) SSE of Portland, OR · 39 km (24 mi) SSE of Gresham, OR

10:11 pm PDT, Jul 12, 2023 · · 13 km deep · released about 12 lb of TNT

10 km30 km60 km120 km N Clackamas County 10 kmMarion County 36 kmMultnomah County 43 kmHood River County 65 kmClark County 69 kmWashington County 75 kmLinn County 77 kmYamhill County 79 kmPolk County 90 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
10:11 pm PDT on 12 July 2023 ()
Where
14 km (9 mi) south of Estacada, OR · earthquakes near Estacada
Magnitude
M 1.7 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Clackamas County, 10 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1219 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. In Estacada, 14 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: Molalla, Mulino, Beavercreek, Sandy.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 2 earthquakes of M5 or more within 50 km:

  1. 5.6 4 km E of Scotts Mills, Oregon · 27 km WSW of this epicentre
  2. 5.0 3 km SW of Portland, Oregon · 48 km NW 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 45.1647, -122.3178. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Clackamas County, OR 10 km (6 mi) E earthquakes near Clackamas County
Marion County, OR 36 km (22 mi) SW earthquakes near Marion County
Multnomah County, OR 43 km (27 mi) N earthquakes near Multnomah County
Hood River County, OR 65 km (40 mi) NE earthquakes near Hood River County
Clark County, WA 69 km (43 mi) N earthquakes near Clark County
Washington County, OR 75 km (46 mi) NW earthquakes near Washington County

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

Aftershocks so far

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

  1. 1.7 8 km S of Molalla, Oregon
  2. 1.8 7 km SSE of Molalla, Oregon
  3. 1.6 6 km ESE of Molalla, Oregon
  4. 1.6 4 km SSW of Scotts Mills, Oregon
  5. 1.8 6 km ESE of Molalla, Oregon
  6. 1.5 5 km E of Beavercreek, Oregon
  7. 2.1 7 km ESE of Molalla, Oregon
  8. 1.5 4 km SSW of Scotts Mills, Oregon
  9. 1.5 1 km SSE of Hubbard, Oregon
  10. 1.8 8 km ESE of Scotts Mills, Oregon
  11. 1.6 6 km SSE of Molalla, Oregon
  12. 1.5 27 km NNE of Gates, Oregon
  13. 1.5 2 km WSW of Stafford, Oregon
  14. 1.7 14 km N of Mehama, Oregon
  15. 1.8 10 km ESE of Molalla, 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.