QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

1 km W of Oak Harbor, Washington

· 21 km deep · released about 94 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 15 kmSan Juan County 40 kmSkagit County 67 kmSnohomish County 72 kmKitsap County 72 kmJefferson County 84 kmWhatcom County 87 kmClallam County 93 kmKing County 108 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 2.3 (ml)
Depth
21 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Island County, 15 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1852 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 160,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 94 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 48.2900, -122.6675. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 15 km (9 mi) N of here earthquakes near Island County
San Juan County, WA 40 km (25 mi) SE of here earthquakes near San Juan County
Skagit County, WA 67 km (42 mi) WSW of here earthquakes near Skagit County
Snohomish County, WA 72 km (45 mi) WNW of here earthquakes near Snohomish County
Kitsap County, WA 72 km (45 mi) N of here earthquakes near Kitsap County
Jefferson County, WA 84 km (52 mi) NE of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 1.5 8 km ESE of Blyn, Washington
  2. 1.8 3 km W of Hansville, Washington
  3. 2.4 3 km W of Hansville, Washington
  4. 1.8 6 km SSW of Port Ludlow, Washington
  5. 2.3 3 km SSW of Silvana, Washington
  6. 2.4 4 km ENE of Camano, Washington
  7. 1.8 3 km ESE of Port Ludlow, Washington
  8. 1.5 10 km NNW of Anacortes, Washington
  9. 2.0 6 km SSW of Port Ludlow, Washington
  10. 1.8 9 km WSW of Friday Harbor, Washington
  11. 2.1 6 km NNW of La Conner, Washington
  12. 3.6 2 km E of Mount Vernon, Washington
  13. 1.5 3 km NNE of Picnic Point, Washington
  14. 1.9 1 km WNW of Mount Vernon, Washington
  15. 1.8 7 km ESE of Blyn, 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.