QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

41 km WNW of Cannon Beach, Oregon

· 32 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clatsop County 60 kmTillamook County 81 kmPacific County 83 kmWahkiakum County 88 kmColumbia County 108 kmWashington County 117 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
32 km below the surface
Felt
no reports yet
Nearest
Clatsop County, 60 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 468 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 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.

Where

Epicentre 45.9825, -124.4788. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clatsop County, OR 60 km (37 mi) W of here earthquakes near Clatsop County
Tillamook County, OR 81 km (50 mi) NW of here earthquakes near Tillamook County
Pacific County, WA 83 km (52 mi) SW of here earthquakes near Pacific County
Wahkiakum County, WA 88 km (55 mi) WSW of here earthquakes near Wahkiakum County
Columbia County, OR 108 km (67 mi) W of here earthquakes near Columbia County
Washington County, OR 117 km (73 mi) WNW of here earthquakes near Washington County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 2.3 80 km W of Cannon Beach, 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.