QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

16 km SE of Glacier, Washington

· -0.8 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Whatcom County 7 kmSkagit County 32 kmSnohomish County 81 kmIsland County 95 kmSan Juan 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 1.5 (ml)
Depth
-0.8 km below the surface
Felt
no reports yet
Nearest
Whatcom County, 7 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 399 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 5.7 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 2,600,000× 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 5.7 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 48.7820, -121.7977. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Whatcom County, WA 7 km (5 mi) SSE of here earthquakes near Whatcom County
Skagit County, WA 32 km (20 mi) N of here earthquakes near Skagit County
Snohomish County, WA 81 km (50 mi) N of here earthquakes near Snohomish County
Island County, WA 95 km (59 mi) NE of here earthquakes near Island County
San Juan County, WA 101 km (63 mi) ENE of here earthquakes near San Juan County
Chelan County, WA 134 km (84 mi) NW of here earthquakes near Chelan County

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

Aftershocks so far

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

  1. 0.7 6 km SSE of Concrete, Washington
  2. 0.9 9 km ENE of Abbotsford, Canada
  3. 1.2 12 km ENE of Mission, Canada
  4. 1.6 7 km ENE of Abbotsford, Canada
  5. 1.8 15 km ESE of Acme, Washington
  6. 1.9 7 km SSE of Concrete, Washington
  7. 1.9 2 km NNE of Lyman, Washington
  8. 1.8 8 km N of Maple Falls, Washington
  9. 1.5 11 km NE of Abbotsford, Canada
  10. 1.7 3 km N of Lyman, Washington
  11. 2.2 2 km N of Lyman, Washington
  12. 1.8 5 km E of Acme, Washington
  13. 1.5 10 km NE of Abbotsford, Canada
  14. 1.7 12 km E of Mission, Canada
  15. 1.8 12 km ENE of Mission, Canada

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.