QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

35 km NE of Amanda Park, Washington

Yes. A magnitude 1.7 earthquake was recorded 35 km NE of Amanda Park, Washington, 88 km (55 mi) W of Seattle, WA, at 6:04 pm PDT on 25 August 2026 (01:04 UTC), 35 km deep.

88 km (55 mi) W of Seattle, WA

· 35 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 16 kmMason County 44 kmClallam County 57 kmGrays Harbor County 65 kmKitsap County 66 kmIsland County 85 kmThurston County 96 kmSan Juan County 100 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
Magnitude
M 1.7 (ml)
Depth
35 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 16 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 79 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.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 4.1 on 2017-02-23 — about 3,700 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.3 Eastern Olympic Peninsula, 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 47.6588, -123.5312. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jefferson County, WA 16 km (10 mi) N earthquakes near Jefferson County
Mason County, WA 44 km (27 mi) SE earthquakes near Mason County
Clallam County, WA 57 km (35 mi) NNW earthquakes near Clallam County
Grays Harbor County, WA 65 km (40 mi) SSW earthquakes near Grays Harbor County
Kitsap County, WA 66 km (41 mi) E earthquakes near Kitsap County
Island County, WA 85 km (53 mi) NE earthquakes near Island County

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

Aftershocks so far

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

  1. 2.2 3 km NW of Skokomish, Washington
  2. 0.9 23 km WNW of Skokomish, Washington
  3. 1.4 8 km SW of Port Angeles, Washington
  4. 0.4 9 km ENE of Hoodsport, Washington
  5. 1.5 23 km W of Quilcene, Washington
  6. 0.9 25 km NE of Amanda Park, Washington
  7. 1.5 3 km WSW of Hoodsport, Washington
  8. 1.0 34 km SSW of Port Angeles, Washington
  9. 1.0 17 km E of Humptulips, Washington
  10. 0.4 11 km NE of Hoodsport, Washington
  11. 1.8 34 km NE of Amanda Park, 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.