QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

2 km SSW of Acme, Washington

· 17 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Whatcom County 33 kmSkagit County 37 kmIsland County 68 kmSan Juan County 68 kmSnohomish County 79 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 1.9 (ml)
Depth
17 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Whatcom County, 33 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2651 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 48.6937, -122.2203. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Whatcom County, WA 33 km (20 mi) WSW of here earthquakes near Whatcom County
Skagit County, WA 37 km (23 mi) NW of here earthquakes near Skagit County
Island County, WA 68 km (42 mi) NNE of here earthquakes near Island County
San Juan County, WA 68 km (42 mi) ENE of here earthquakes near San Juan County
Snohomish County, WA 79 km (49 mi) NNW of here earthquakes near Snohomish County
Kitsap County, WA 121 km (75 mi) NNE of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 1.9 6 km WSW of Peaceful Valley, Washington
  2. 1.6 1 km NNW of Mount Vernon, Washington
  3. 1.9 8 km NNE of Hamilton, Washington
  4. 2.0 8 km NNE of Hamilton, Washington
  5. 2.8 9 km NNE of Hamilton, Washington
  6. 1.9 8 km NNE of Hamilton, Washington
  7. 1.8 9 km NNE of Hamilton, Washington
  8. 1.5 5 km WSW of Acme, Washington
  9. 2.0 3 km WSW of Kendall, Washington
  10. 1.6 0 km S of Big Lake, Washington
  11. 1.7 3 km WSW of Lake Cavanaugh, Washington
  12. 2.0 6 km SE of Bay View, Washington
  13. 2.1 6 km SSE of Maple Falls, Washington
  14. 2.2 5 km NE of Oak Harbor, Washington
  15. 2.1 5 km SW of Everson, 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.