QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

5 km SE of Blyn, Washington

· 53 km deep · released about 150 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 28 kmKitsap County 45 kmJefferson County 47 kmSan Juan County 59 kmClallam County 71 kmMason County 73 kmSnohomish County 89 kmKing County 101 kmSkagit County 101 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 2.5 (ml)
Depth
53 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Island County, 28 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2837 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 72,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.5× the energy of this one
  4. This earthquake M 2.5 about 150 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.

Where

Epicentre 47.9898, -122.9547. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 28 km (18 mi) SW of here earthquakes near Island County
Kitsap County, WA 45 km (28 mi) NNW of here earthquakes near Kitsap County
Jefferson County, WA 47 km (29 mi) ENE of here earthquakes near Jefferson County
San Juan County, WA 59 km (36 mi) S of here earthquakes near San Juan County
Clallam County, WA 71 km (44 mi) E of here earthquakes near Clallam County
Mason County, WA 73 km (45 mi) NNE of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 1.8 17 km WNW of Coupeville, Washington
  2. 1.6 8 km NNW of Bangor Trident Base, Washington
  3. 2.2 15 km SSE of Friday Harbor, Washington
  4. 2.2 12 km WNW of Ault Field, Washington
  5. 2.3 12 km NW of Ault Field, Washington
  6. 2.4 6 km S of Quilcene, Washington
  7. 2.2 12 km WNW of Ault Field, Washington
  8. 1.7 12 km NW of Ault Field, Washington
  9. 1.6 1 km SW of Keyport, Washington
  10. 2.0 23 km WNW of Brinnon, Washington
  11. 1.8 9 km NNW of Freeland, Washington
  12. 1.6 5 km NNE of Kingston, Washington
  13. 1.8 10 km NE of Port Angeles East, Washington
  14. 1.7 20 km W of Brinnon, Washington
  15. 2.6 3 km WSW of Erlands Point-Kitsap Lake, 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.