QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

4 km W of Hammond, Oregon

· 38 km deep · released about 3.2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clatsop County 31 kmPacific County 44 kmWahkiakum County 47 kmColumbia County 77 kmTillamook County 85 kmWashington County 101 kmCowlitz County 103 kmGrays Harbor County 103 kmYamhill County 119 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 3.5 (ml)
Depth
38 km below the surface
Felt
143 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
Nearest
Clatsop County, 31 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3534 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 143 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 53,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,700× the energy of this one
  4. This earthquake M 3.5 about 3.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 6.7× more

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 46.1963, -124.0157. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clatsop County, OR 31 km (19 mi) NW of here earthquakes near Clatsop County
Pacific County, WA 44 km (27 mi) SSW of here earthquakes near Pacific County
Wahkiakum County, WA 47 km (29 mi) WSW of here earthquakes near Wahkiakum County
Columbia County, OR 77 km (48 mi) WNW of here earthquakes near Columbia County
Tillamook County, OR 85 km (53 mi) NNW of here earthquakes near Tillamook County
Washington County, OR 101 km (63 mi) NW of here earthquakes near Washington County

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

Aftershocks so far

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

  1. 1.9 12 km SW of Lebam, Washington
  2. 1.8 41 km WNW of Cannon Beach, Oregon
  3. 1.5 8 km NNE of Nehalem, Oregon
  4. 1.7 19 km WSW of Westport, Oregon
  5. 1.8 21 km WNW of Long Beach, Washington
  6. 1.5 8 km NE of Nehalem, Oregon
  7. 2.4 29 km W of Long Beach, Washington
  8. 1.9 7 km SE of Jeffers Garden, Oregon
  9. 2.2 23 km SW of Westport, Oregon
  10. 2.0 21 km WSW of Westport, Oregon
  11. 1.7 11 km WSW of Cathlamet, Washington
  12. 1.6 7 km SSW of Ocean Park, Washington
  13. 2.1 11 km WSW of Ocean Park, Washington

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.