QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Burley, WA

USGS: 5 km W of Burley, Washington

35 km (22 mi) SW of Seattle, WA · 25 km (16 mi) NW of Tacoma, WA

7:30 am PDT, Sep 30, 2026 · · 27 km deep · released about 8.1 lb of TNT

10 km30 km60 km120 km N Kitsap County 26 kmMason County 36 kmThurston County 54 kmPierce County 57 kmKing County 66 kmJefferson County 76 kmIsland County 83 kmGrays Harbor County 91 kmLewis County 95 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
7:30 am PDT on 30 September 2026 ()
Where
5 km (3 mi) W of Burley, WA · earthquakes near Burley
Magnitude
M 1.6 (ml)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 26 km N
Nearest mapped fault
Tacoma 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 2 days ago

A magnitude 1.6 earthquake was recorded 5 km (3 mi) W of Burley, WA, at 7:30 am PDT on 30 September 2026 (14:30 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Wauna, Purdy, Key Center, Canterwood, Rosedale, Allyn.

How big was it?

This earthquake released about 8.1 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 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 8.1 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 4.2 on 2026-09-29 — about 6,200 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 The 2001 Nisqually, Washington Earthquake · 29 km S of this epicentre
  2. 6.7 4 km WNW of Roy, Washington · 45 km S of this epicentre
  3. 6.7 1 km ENE of Dash Point, Washington · 24 km ESE of this epicentre
  4. 6.1 Puget Sound region, Washington · 4 km WSW of this epicentre
  5. 5.8 Puget Sound area, Washington · 21 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 47.4098, -122.7008. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kitsap County, WA 26 km (16 mi) N earthquakes near Kitsap County
Mason County, WA 36 km (22 mi) W earthquakes near Mason County
Thurston County, WA 54 km (33 mi) S earthquakes near Thurston County
Pierce County, WA 57 km (36 mi) SE earthquakes near Pierce County
King County, WA 66 km (41 mi) E earthquakes near King County
Jefferson County, WA 76 km (47 mi) NW earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 1.0 3 km E of Bethel, Washington
  2. 1.3 4 km WNW of Wauna, Washington
  3. 1.1 11 km S of Shelton, 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.