QuakeIndex

explosion · reviewed by a seismologist

M 2.0ml

Earthquake near Mount Hood Village, OR

USGS: Washington-Oregon border region

53 km (33 mi) ESE of Portland, OR · 36 km (22 mi) ESE of Gresham, OR

3:01 pm PDT, Sep 24, 2018 · · 5.1 km deep · released about 31 lb of TNT

Every earthquake near Mount Hood Village Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clackamas County 30 kmHood River County 30 kmMultnomah County 36 kmClark County 56 kmSkamania County 70 kmMarion County 71 kmWasco County 71 kmWashington County 87 kmColumbia County 103 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
3:01 pm PDT on 24 September 2018 ()
Where
5 km (3 mi) NNW of Mount Hood Village, OR · earthquakes near Mount Hood Village
Magnitude
M 2.0 (ml)
Depth
5.1 km below the surface
Felt
no reports yet
Nearest
Clackamas County, 30 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2928 days ago

A magnitude 2.0 earthquake was recorded 5 km (3 mi) NNW of Mount Hood Village, OR, at 3:01 pm PDT on 24 September 2018 (22:01 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Sandy, Estacada.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 45.3923, -122.0072. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Clackamas County, OR 30 km (18 mi) SSW earthquakes near Clackamas County
Hood River County, OR 30 km (19 mi) ENE earthquakes near Hood River County
Multnomah County, OR 36 km (23 mi) WNW earthquakes near Multnomah County
Clark County, WA 56 km (35 mi) NW earthquakes near Clark County
Skamania County, WA 70 km (44 mi) N earthquakes near Skamania County
Marion County, OR 71 km (44 mi) SW earthquakes near Marion County

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

Aftershocks so far

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

  1. 1.6 4 km SSW of Sandy, Oregon
  2. 1.5 8 km NE of Government Camp, Oregon
  3. 2.4 7 km NE of Government Camp, Oregon
  4. 1.6 16 km ESE of Yacolt, Washington
  5. 1.6 3 km NNW of Mount Hood Village, Oregon
  6. 1.6 3 km ENE of Government Camp, Oregon
  7. 1.6 3 km NNE of Government Camp, Oregon
  8. 1.6 3 km NNE of Government Camp, Oregon
  9. 1.8 3 km NNE of Government Camp, Oregon
  10. 1.5 2 km ENE of Government Camp, Oregon
  11. 2.0 2 km ENE of Government Camp, Oregon
  12. 2.1 2 km ENE of Government Camp, Oregon
  13. 2.0 2 km NE of Government Camp, Oregon
  14. 1.6 2 km ENE of Government Camp, Oregon
  15. 2.0 2 km NE of Government Camp, 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.