QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

8 km NW of Verlot, Washington

· 16 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 12 kmSkagit County 39 kmIsland County 60 kmKing County 72 kmWhatcom County 78 kmKitsap County 81 kmChelan County 98 kmSan Juan County 100 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 2.8 (ml)
Depth
16 km below the surface
Felt
78 reports · strongest reported intensity III
Nearest
Snohomish County, 12 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1718 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 78 people have reported feeling it to USGS.

How big was it?

This earthquake released about 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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 48.1412, -121.8667. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 12 km (8 mi) NW of here earthquakes near Snohomish County
Skagit County, WA 39 km (24 mi) S of here earthquakes near Skagit County
Island County, WA 60 km (37 mi) E of here earthquakes near Island County
King County, WA 72 km (45 mi) N of here earthquakes near King County
Whatcom County, WA 78 km (48 mi) S of here earthquakes near Whatcom County
Kitsap County, WA 81 km (50 mi) NE of here earthquakes near Kitsap 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. 1.8 2 km E of Granite Falls, Washington
  2. 1.6 Puget Sound region, Washington
  3. 1.5 4 km SSW of Clinton, Washington
  4. 1.6 2 km E of Granite Falls, Washington
  5. 1.7 Washington
  6. 1.8 3 km NNW of Picnic Point, Washington
  7. 1.6 4 km NE of Granite Falls, Washington
  8. 1.6 6 km SW of Sultan, Washington
  9. 1.8 6 km SSE of Concrete, Washington
  10. 1.5 Washington
  11. 2.0 Washington
  12. 1.8 2 km W of Darrington, Washington
  13. 1.7 4 km E of Granite Falls, Washington
  14. 1.7 2 km ENE of Swede Heaven, Washington
  15. 1.7 13 km S of Concrete, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2019-07-12 — it released about 410 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.