QuakeIndex

Earthquake · reviewed by a seismologist

M 0.1md

Earthquake near Seattle, WA

Yes. A magnitude 0.1 earthquake was recorded 42 km (26 mi) WNW of Seattle, WA, at 2:32 am PDT on 4 October 2026 (09:32 UTC), 14 km deep.

This was on 4 October 2026. The latest near Seattle: M 4.2 on 29 September 2026.

USGS: 7 km NNE of Brinnon, Washington

40 km (25 mi) WNW of Seattle, WA · 38 km (24 mi) W of Shoreline, WA

2:32 am PDT, Oct 4, 2026 · · 14 km deep · released about 0.049 lb of TNT

Every earthquake near Seattle Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 19 kmIsland County 49 kmMason County 49 kmJefferson County 51 kmKing County 81 kmSan Juan County 87 kmClallam County 88 kmSnohomish County 88 kmThurston County 89 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
2:32 am PDT on 4 October 2026 ()
Where
42 km (26 mi) WNW of Seattle, WA · earthquakes near Seattle
Magnitude
M 0.1 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 19 km SE
Nearest mapped fault
Seattle fault, 14 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 2 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. 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: Bangor Trident Base, Seabeck, Poulsbo, Silverdale, Lofall, Chico.

How big was it?

This earthquake released about 0.049 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 310,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 19,000× the energy of this one
  4. This earthquake M 0.1 about 0.049 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 4.3 on 2023-10-09 — about 1,800,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 6.1 Puget Sound region, Washington · 38 km SSE of this epicentre
  2. 5.3 Eastern Olympic Peninsula, Washington · 13 km WNW 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, -122.8542. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kitsap County, WA 19 km (12 mi) SE earthquakes near Kitsap County
Island County, WA 49 km (30 mi) NNE earthquakes near Island County
Mason County, WA 49 km (31 mi) SSW earthquakes near Mason County
Jefferson County, WA 51 km (32 mi) W earthquakes near Jefferson County
King County, WA 81 km (51 mi) ESE earthquakes near King County
San Juan County, WA 87 km (54 mi) NNW earthquakes near San Juan County

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

Aftershocks so far

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

  1. 1.1 4 km WSW of Chico, Washington
  2. 0.8 2 km W of Erlands Point-Kitsap Lake, Washington
  3. 0.7 3 km W of Erlands Point-Kitsap Lake, Washington
  4. 1.3 7 km ESE of Bainbridge Island, Washington
  5. 0.2 6 km E of Quilcene, Washington
  6. 1.1 2 km ENE of Tracyton, Washington
  7. 2.0 2 km ENE of Tracyton, Washington
  8. 0.9 3 km N of Enetai, Washington
  9. 2.0 2 km E of Tracyton, Washington
  10. 1.8 2 km E of Tracyton, Washington
  11. 0.6 10 km SSW of Brinnon, Washington
  12. 1.5 3 km WSW of Hoodsport, 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.