QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

1 km ENE of Bay View, Washington

· 20 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 40 kmSkagit County 47 kmSan Juan County 48 kmWhatcom County 60 kmSnohomish County 70 kmKitsap County 95 kmJefferson County 110 kmClallam County 114 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 1.5 (ml)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Island County, 40 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3031 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 48.4863, -122.4588. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 40 km (25 mi) NNE of here earthquakes near Island County
Skagit County, WA 47 km (29 mi) W of here earthquakes near Skagit County
San Juan County, WA 48 km (30 mi) E of here earthquakes near San Juan County
Whatcom County, WA 60 km (38 mi) SW of here earthquakes near Whatcom County
Snohomish County, WA 70 km (44 mi) NW of here earthquakes near Snohomish County
Kitsap County, WA 95 km (59 mi) N of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 1.7 3 km SSW of Big Lake, Washington
  2. 2.0 4 km WNW of Lyman, Washington
  3. 1.9 2 km SSW of Acme, Washington
  4. 2.2 3 km SSW of Acme, Washington
  5. 2.9 3 km SW of Acme, Washington
  6. 1.8 4 km NE of Anacortes, Washington
  7. 2.3 4 km N of Port Townsend, Washington
  8. 2.0 3 km SW of Mount Vernon, Washington
  9. 1.9 10 km ESE of Deming, Washington
  10. 1.5 8 km SSE of Coupeville, Washington
  11. 2.4 6 km SW of Bay View, Washington
  12. 2.3 6 km SW of Bay View, Washington
  13. 1.6 3 km WNW of Alger, Washington
  14. 1.5 2 km S of Big Lake, Washington
  15. 2.9 5 km SW of Lake Cavanaugh, 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.