QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

0 km SSW of Oak Harbor, Washington

· 21 km deep · released about 220 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 15 kmSan Juan County 42 kmSkagit County 65 kmSnohomish County 70 kmKitsap County 72 kmJefferson County 85 kmWhatcom County 86 kmClallam County 94 kmKing County 107 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 2.6 (ml)
Depth
21 km below the surface
Felt
15 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 2312 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 15 people have reported feeling it to USGS.

How big was it?

This earthquake released about 220 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 68,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 48,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.3× the energy of this one
  4. This earthquake M 2.6 about 220 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 48.2885, -122.6450. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 15 km (9 mi) N of here earthquakes near Island County
San Juan County, WA 42 km (26 mi) SE of here earthquakes near San Juan County
Skagit County, WA 65 km (41 mi) WSW of here earthquakes near Skagit County
Snohomish County, WA 70 km (44 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 85 km (53 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

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

  1. 1.7 12 km ENE of Jamestown, Washington
  2. 2.2 2 km N of Mount Vernon, Washington
  3. 1.8 3 km NW of Mount Vernon, Washington
  4. 2.3 7 km SSE of Coupeville, Washington
  5. 2.2 5 km E of Big Lake, Washington
  6. 1.7 6 km NNW of Lofall, Washington
  7. 1.8 5 km S of Hansville, Washington
  8. 1.6 8 km NE of Jamestown, Washington
  9. 2.0 7 km NNE of Jamestown, Washington
  10. 1.8 2 km S of Clear Lake, Washington
  11. 1.6 4 km WNW of Freeland, Washington
  12. 1.5 6 km NNW of Lofall, Washington
  13. 1.6 1 km NNW of Mount Vernon, Washington
  14. 2.3 1 km W of Oak Harbor, Washington
  15. 1.6 6 km NNE of Lofall, 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.