QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3 km WSW of Felida, Washington

· 22 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 22 kmMultnomah County 31 kmWashington County 31 kmColumbia County 37 kmCowlitz County 56 kmYamhill County 66 kmSkamania County 72 kmClackamas County 74 kmClatsop County 82 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 1.8 (ml)
Depth
22 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Clark County, 22 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 759 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 45.6958, -122.7545. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, WA 22 km (14 mi) WSW of here earthquakes near Clark County
Multnomah County, OR 31 km (19 mi) WNW of here earthquakes near Multnomah County
Washington County, OR 31 km (19 mi) ENE of here earthquakes near Washington County
Columbia County, OR 37 km (23 mi) SE of here earthquakes near Columbia County
Cowlitz County, WA 56 km (35 mi) S of here earthquakes near Cowlitz County
Yamhill County, OR 66 km (41 mi) NE of here earthquakes near Yamhill County

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

Aftershocks so far

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

  1. 2.1 8 km S of Scappoose, Oregon
  2. 1.7 8 km SW of Vernonia, Oregon
  3. 1.9 1 km ESE of North Portland, Oregon
  4. 1.6 8 km S of Scappoose, Oregon
  5. 1.8 4 km SSE of Stafford, Oregon
  6. 1.6 13 km NE of Vernonia, Oregon
  7. 1.6 2 km NNE of Columbia City, Oregon
  8. 1.6 3 km W of Yacolt, Washington
  9. 1.6 19 km NE of Kalama, Washington
  10. 1.8 8 km SW of Scappoose, Oregon
  11. 2.2 2 km SSW of Banks, Oregon
  12. 1.6 21 km ENE of Kalama, Washington
  13. 1.9 1 km NNW of Battle Ground, Washington
  14. 1.9 5 km WSW of Yacolt, Washington
  15. 1.8 5 km N of West Haven, 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.