QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Carnation, WA

Yes: an earthquake was likely felt in Carnation in the last 24 hours. M 2.0, 3 km (2 mi) NE of Carnation, at 8:48 am PST on 11 November 2026 (16:48 UTC); the estimated shaking in Carnation was intensity II (weak). Every earthquake near Carnation

This page: a magnitude 3.0 earthquake was recorded 7 km (4 mi) east-northeast of Carnation, WA, at 6:36 am PST on 29 December 2020 (14:36 UTC), 20 km deep. 310 people have reported feeling it to USGS.

USGS: 6 km ENE of Carnation, Washington

40 km (25 mi) E of Seattle, WA · 18 km (11 mi) ENE of Sammamish, WA

6:36 am PST, Dec 29, 2020 · · 20 km deep · released about 890 lb of TNT

10 km30 km60 km120 km N King County 19 kmSnohomish County 44 kmKitsap County 62 kmPierce County 72 kmIsland County 84 kmSkagit County 92 kmChelan County 93 kmKittitas County 105 kmMason County 107 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
6:36 am PST on 29 December 2020 ()
Where
7 km (4 mi) east-northeast of Carnation, WA · earthquakes near Carnation
Magnitude
M 3.0 (ml)
Depth
20 km below the surface
Felt
310 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
King County, 19 km S
Nearest mapped fault
Southern Whidbey Island fault, 4 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 2023 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 30 km (19 mi) from the epicentre. In Carnation, 7 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.

Likely felt in: Fall City 12 km, intensity II · Snoqualmie 15 km, intensity II · City of Sammamish 17 km, intensity II · Sammamish 19 km, intensity II · Issaquah 21 km, intensity II · Redmond 22 km, intensity II · West Lake Sammamish 23 km, intensity II · Monroe 24 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 380,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 890 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 250 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 · 11 km NNW of this epicentre
  2. 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 10 km N of this epicentre
  3. 5.0 4 km ENE of Machias, Washington · 40 km NNW 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 47.6635, -121.8252. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
King County, WA 19 km (12 mi) S earthquakes near King County
Snohomish County, WA 44 km (27 mi) N earthquakes near Snohomish County
Kitsap County, WA 62 km (38 mi) W earthquakes near Kitsap County
Pierce County, WA 72 km (45 mi) SSW earthquakes near Pierce County
Island County, WA 84 km (52 mi) NW earthquakes near Island County
Skagit County, WA 92 km (57 mi) N earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.7 1 km ENE of Granite Falls, Washington
  2. 1.6 10 km NNE of Snoqualmie, Washington
  3. 1.6 2 km S of Monroe, Washington
  4. 1.5 2 km ENE of Granite Falls, Washington
  5. 1.8 1 km SW of Snoqualmie, Washington
  6. 1.7 2 km E of Lake Stevens, Washington
  7. 1.6 1 km ESE of Issaquah, Washington
  8. 1.6 2 km ENE of Granite Falls, Washington
  9. 1.9 2 km NNE of Esperance, Washington
  10. 2.3 0 km SSW of Boulevard Park, Washington
  11. 2.2 1 km NNE of Carnation, Washington
  12. 1.5 1 km N of Boulevard Park, Washington
  13. 1.7 3 km ENE of Granite Falls, Washington
  14. 1.9 2 km SE of Ravensdale, Washington
  15. 1.7 6 km ENE of Lake Roesiger, 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.