QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Seattle, WA

No earthquake was likely felt in Seattle in the 24 hours to 8:33 am PST (16:33 UTC). The last one was M 4.2, 37 km (23 mi) SW, at 2:05 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 9,329 felt reports to USGS. Every earthquake near Seattle

This page: a magnitude 1.6 earthquake was recorded 33 km (20 mi) east-northeast of Seattle, WA, at 3:46 pm PST on 6 January 2019 (23:46 UTC), 26 km deep.

USGS: Washington

34 km (21 mi) ENE of Seattle, WA · 15 km (9 mi) E of Redmond, WA

3:46 pm PST, Jan 6, 2019 · · 26 km deep · released about 9 lb of TNT

10 km30 km60 km120 km N King County 25 kmSnohomish County 41 kmKitsap County 55 kmPierce County 75 kmIsland County 76 kmSkagit County 88 kmChelan County 99 kmMason County 102 kmThurston County 110 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
3:46 pm PST on 6 January 2019 ()
Where
33 km (20 mi) east-northeast of Seattle, WA · earthquakes near Seattle
Magnitude
M 1.6 (ml)
Depth
26 km below the surface
Felt
no reports yet
Nearest
King County, 25 km SSE
Nearest mapped fault
Cherry Creek 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 2867 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 Seattle, 33 km away, the estimate is intensity I (not felt). 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, Carnation, Duvall, Ames Lake, Union Hill-Novelty Hill, Cottage Lake.

How big was it?

This earthquake released about 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 9 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 · 7 km NNE of this epicentre
  2. 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 8 km NE of this epicentre
  3. 5.0 4 km ENE of Machias, Washington · 33 km N of this epicentre
  4. 5.0 3 km WSW of Des Moines, Washington · 49 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 47.7040, -121.9173. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
King County, WA 25 km (15 mi) SSE earthquakes near King County
Snohomish County, WA 41 km (25 mi) NNE earthquakes near Snohomish County
Kitsap County, WA 55 km (34 mi) W earthquakes near Kitsap County
Pierce County, WA 75 km (46 mi) SSW earthquakes near Pierce County
Island County, WA 76 km (47 mi) NW earthquakes near Island County
Skagit County, WA 88 km (55 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 3 km WSW of Wilderness Rim, Washington
  2. 1.6 3 km E of Cathcart, Washington
  3. 2.1 3 km ENE of Granite Falls, Washington
  4. 1.5 2 km N of Boulevard Park, Washington
  5. 1.5 2 km SSW of Lynnwood, Washington
  6. 1.6 4 km ESE of Carnation, Washington
  7. 1.6 3 km ENE of Cathcart, Washington
  8. 1.7 2 km ENE of Granite Falls, Washington
  9. 2.8 8 km NNE of Snoqualmie, Washington
  10. 1.8 1 km N of Fairwood, Washington
  11. 1.8 3 km E of Cathcart, Washington
  12. 1.6 4 km ENE of Cathcart, Washington
  13. 1.6 4 km SE of Ames Lake, Washington
  14. 1.6 4 km SSW of Roosevelt, Washington
  15. 3.0 4 km ENE of Cathcart, 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.