QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

47 km SSW of Princeton, Canada

Yes. A magnitude 2.6 earthquake was recorded 47 km SSW of Princeton, Canada, at 10:06 pm PDT on 9 August 2025 (05:06 UTC), 4.9 km deep. 2 people have reported feeling it to USGS.

· 4.9 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Whatcom County 76 kmSkagit County 97 kmOkanogan County 103 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
4.9 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Whatcom County, 76 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 384 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 240 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 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 49.0998, -120.8677. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Whatcom County, WA 76 km (47 mi) WSW earthquakes near Whatcom County
Skagit County, WA 97 km (60 mi) SW earthquakes near Skagit County
Okanogan County, WA 103 km (64 mi) SE earthquakes near Okanogan County
Snohomish County, WA 134 km (83 mi) SSW earthquakes near Snohomish County

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

Aftershocks so far

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

  1. 2.2 7 km S of Princeton, Canada
  2. 1.8 10 km SSE of Princeton, Canada
  3. 2.0 13 km SSE of Princeton, Canada
  4. 2.0 12 km S of Princeton, Canada
  5. 2.0 6 km SSE of Princeton, Canada
  6. 2.2 15 km S of Princeton, Canada
  7. 2.0 8 km S of Princeton, Canada
  8. 2.0 8 km S of Princeton, Canada
  9. 2.2 13 km S of Princeton, Canada
  10. 2.1 11 km S of Princeton, Canada
  11. 2.2 14 km S of Princeton, Canada
  12. 1.9 12 km S of Princeton, Canada
  13. 2.0 18 km SSE of Princeton, Canada
  14. 1.9 11 km S of Princeton, Canada
  15. 2.1 11 km SSE of Princeton, 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.