QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

0 km SSE of Camano, Washington

· 23 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 11 kmSan Juan County 57 kmSnohomish County 58 kmKitsap County 60 kmSkagit County 64 kmJefferson County 85 kmWhatcom County 90 kmKing County 92 kmClallam County 101 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
23 km below the surface
Felt
no reports yet
Nearest
Island County, 11 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 316 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 16 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 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 48.1722, -122.5265. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 11 km (7 mi) E of here earthquakes near Island County
San Juan County, WA 57 km (35 mi) SE of here earthquakes near San Juan County
Snohomish County, WA 58 km (36 mi) WNW of here earthquakes near Snohomish County
Kitsap County, WA 60 km (37 mi) N of here earthquakes near Kitsap County
Skagit County, WA 64 km (39 mi) SW of here earthquakes near Skagit County
Jefferson County, WA 85 km (53 mi) ENE 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. 2.2 3 km SW of Roosevelt, Washington
  2. 1.5 6 km WNW of Lofall, Washington
  3. 1.7 5 km WSW of Clinton, Washington
  4. 1.6 5 km N of Port Townsend, Washington
  5. 1.8 6 km WSW of Port Hadlock-Irondale, Washington
  6. 1.8 4 km SSW of Port Ludlow, Washington
  7. 1.6 7 km ESE of Quilcene, Washington
  8. 1.8 5 km NE of Kingston, Washington
  9. 1.9 3 km W of Mount Vernon, Washington
  10. 2.0 9 km W of Coupeville, Washington
  11. 1.8 4 km NNW of Port Townsend, Washington
  12. 1.6 4 km SW of Port Ludlow, Washington
  13. 1.5 11 km WNW of Ault Field, Washington
  14. 1.5 1 km ESE of Three Lakes, Washington
  15. 2.0 0 km WSW of Lynnwood, 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.