QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Duvall, WA

Yes: an earthquake was likely felt in Duvall in the last 24 hours. M 2.0, 11 km (7 mi) SE of Duvall, at 8:48 am PST on 11 November 2026 (16:48 UTC); the estimated shaking in Duvall was intensity II (weak). Every earthquake near Duvall

This page: a magnitude 1.5 earthquake was recorded 2 km (1 mi) east of Duvall, WA, at 11:50 pm PST on 23 February 2023 (07:50 UTC), 8.1 km deep.

USGS: Washington

14 km (9 mi) ENE of Redmond, WA · 33 km (20 mi) ENE of Seattle, WA

11:50 pm PST, Feb 23, 2023 · · 8.1 km deep · released about 5.4 lb of TNT

10 km30 km60 km120 km N King County 29 kmSnohomish County 38 kmKitsap County 53 kmIsland County 71 kmPierce County 78 kmSkagit County 84 kmChelan County 101 kmMason County 101 kmThurston County 111 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
11:50 pm PST on 23 February 2023 ()
Where
2 km (1 mi) east of Duvall, WA · earthquakes near Duvall
Magnitude
M 1.5 (ml)
Depth
8.1 km below the surface
Felt
no reports yet
Nearest
King County, 29 km SSE
Nearest mapped fault
Southern Whidbey Island fault, under 1 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1357 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 6 km (4 mi) from the epicentre. In Duvall, 2 km away, the estimate is intensity II (weak). 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.

Earthquakes near other towns within 30 km: Lake Marcel-Stillwater, Union Hill-Novelty Hill, Cottage Lake, Carnation, Ames Lake, Monroe.

How big was it?

This earthquake released about 5.4 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 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.6 on 2019-07-12 — about 42,000 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 6 km ENE of this epicentre
  2. 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 9 km E of this epicentre
  3. 5.0 4 km ENE of Machias, Washington · 29 km N of this epicentre
  4. 5.0 3 km WSW of Des Moines, Washington · 50 km SW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 47.7398, -121.9555. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
King County, WA 29 km (18 mi) SSE earthquakes near King County
Snohomish County, WA 38 km (23 mi) NNE earthquakes near Snohomish County
Kitsap County, WA 53 km (33 mi) WSW earthquakes near Kitsap County
Island County, WA 71 km (44 mi) NW earthquakes near Island County
Pierce County, WA 78 km (48 mi) S earthquakes near Pierce County
Skagit County, WA 84 km (52 mi) N earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.9 10 km NE of Lake Marcel-Stillwater, Washington
  2. 1.6 2 km W of Clinton, Washington
  3. 2.1 3 km ENE of East Renton Highlands, Washington
  4. 1.6 2 km NNE of Lea Hill, Washington
  5. 2.4 8 km SSW of Sultan, Washington
  6. 1.6 11 km NE of Snoqualmie, Washington
  7. 2.1 1 km NW of Meadowdale, Washington
  8. 1.6 Washington
  9. 2.6 11 km NE of Snoqualmie, Washington
  10. 1.7 8 km NE of Fall City, Washington
  11. 2.3 0 km WSW of Bothell West, Washington
  12. 1.7 3 km ENE of Bainbridge Island, Washington
  13. 1.6 2 km E of Granite Falls, Washington
  14. 1.9 10 km S of Sultan, Washington
  15. 2.5 9 km NNE of Snoqualmie, 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.