QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Kingston, WA

No earthquake was likely felt in Kingston in the 24 hours to 6:21 pm PST (02:21 UTC). The last one was M 4.2, 47 km (29 mi) SSW, at 2:05 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 9,329 felt reports to USGS. Every earthquake near Kingston

This page: a magnitude 2.1 earthquake was recorded 5 km (3 mi) north-northwest of Kingston, WA, at 5:12 pm PDT on 22 May 2021 (00:12 UTC), 25 km deep. 4 people have reported feeling it to USGS.

USGS: 4 km NNW of Kingston, Washington

27 km (17 mi) NNW of Seattle, WA · 16 km (10 mi) NW of Shoreline, WA

5:12 pm PDT, May 22, 2021 · · 25 km deep · released about 41 lb of TNT

10 km30 km60 km120 km N Kitsap County 24 kmIsland County 38 kmSnohomish County 61 kmKing County 64 kmMason County 73 kmJefferson County 75 kmSan Juan County 86 kmSkagit County 90 kmPierce County 92 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
5:12 pm PDT on 22 May 2021 ()
Where
5 km (3 mi) north-northwest of Kingston, WA · earthquakes near Kingston
Magnitude
M 2.1 (ml)
Depth
25 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Kitsap County, 24 km SSW
Nearest mapped fault
Southern Whidbey Island fault, 5 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 1930 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In Kingston, 5 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: Hansville, Indianola, Lofall, Edmonds, Woodway, Suquamish.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 5,400 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 49 km E of this epicentre
  2. 5.3 Eastern Olympic Peninsula, Washington · 36 km W of this epicentre
  3. 5.0 4 km ENE of Machias, Washington · 43 km ENE 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 47.8362, -122.5212. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kitsap County, WA 24 km (15 mi) SSW earthquakes near Kitsap County
Island County, WA 38 km (23 mi) NNW earthquakes near Island County
Snohomish County, WA 61 km (38 mi) ENE earthquakes near Snohomish County
King County, WA 64 km (40 mi) SE earthquakes near King County
Mason County, WA 73 km (45 mi) SW earthquakes near Mason County
Jefferson County, WA 75 km (47 mi) W earthquakes near Jefferson 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. 1.5 1 km NNW of Granite Falls, Washington
  2. 1.5 3 km NNE of Picnic Point, Washington
  3. 1.6 1 km SW of Bothell East, Washington
  4. 1.9 6 km N of Brinnon, Washington
  5. 1.7 3 km WNW of Gorst, Washington
  6. 1.8 7 km ESE of Blyn, Washington
  7. 1.5 1 km WSW of Silverdale, Washington
  8. 1.8 1 km SW of Monroe North, Washington
  9. 1.8 4 km SSW of Port Ludlow, Washington
  10. 1.7 1 km NNW of Silvana, Washington
  11. 1.9 1 km ESE of Esperance, Washington
  12. 1.7 12 km NNW of Quilcene, Washington
  13. 2.2 1 km NNE of Cathcart, Washington
  14. 1.6 7 km WNW of Gorst, Washington
  15. 1.5 7 km ENE of Allyn, 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.