QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

3 km WSW of Monroe, Washington

· 30 km deep · released about 250 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 30 kmKing County 42 kmKitsap County 52 kmIsland County 59 kmSkagit County 73 kmPierce County 89 kmMason County 102 kmChelan County 105 kmSan Juan County 109 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
30 km below the surface
Felt
37 reports · strongest reported intensity IV
Measured shaking
intensity II (ShakeMap)
Nearest
Snohomish County, 30 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2073 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 37 people have reported feeling it to USGS.

How big was it?

This earthquake released about 250 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 61,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 43,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.8× the energy of this one
  4. This earthquake M 2.6 about 250 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 47.8477, -122.0220. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 30 km (19 mi) SW of here earthquakes near Snohomish County
King County, WA 42 km (26 mi) NNW of here earthquakes near King County
Kitsap County, WA 52 km (33 mi) ENE of here earthquakes near Kitsap County
Island County, WA 59 km (37 mi) SE of here earthquakes near Island County
Skagit County, WA 73 km (46 mi) SSW of here earthquakes near Skagit County
Pierce County, WA 89 km (55 mi) N of here earthquakes near Pierce 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. 1.6 0 km NW of Boulevard Park, Washington
  2. 1.8 5 km S of Hansville, Washington
  3. 1.5 1 km SSW of Carnation, Washington
  4. 1.6 4 km WNW of Freeland, Washington
  5. 1.9 5 km NW of North Sultan, Washington
  6. 1.6 4 km SSW of May Creek, Washington
  7. 1.5 3 km NE of Fall City, Washington
  8. 1.7 5 km NE of Kingston, Washington
  9. 2.0 3 km ENE of Granite Falls, Washington
  10. 2.1 4 km NNW of Kingston, Washington
  11. 1.6 5 km NNE of Woods Creek, Washington
  12. 1.9 1 km NW of West Lake Sammamish, Washington
  13. 2.5 17 km E of Carnation, Washington
  14. 1.5 4 km N of Woods Creek, Washington
  15. 1.7 4 km SSE of Bainbridge Island, 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 900 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.