QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

2 km N of Port Townsend, Washington

· 22 km deep · released about 6.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 7 kmSan Juan County 48 kmKitsap County 56 kmJefferson County 68 kmSnohomish County 74 kmSkagit County 80 kmClallam County 84 kmMason County 93 kmKing 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 1.6 (ml)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Island County, 7 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2817 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 6.8 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 2,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.8 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 48.1380, -122.7585. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 7 km (4 mi) WSW of here earthquakes near Island County
San Juan County, WA 48 km (30 mi) SSE of here earthquakes near San Juan County
Kitsap County, WA 56 km (35 mi) N of here earthquakes near Kitsap County
Jefferson County, WA 68 km (42 mi) ENE of here earthquakes near Jefferson County
Snohomish County, WA 74 km (46 mi) W of here earthquakes near Snohomish County
Skagit County, WA 80 km (50 mi) WSW of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.6 6 km E of Oak Bay, Canada
  2. 2.6 0 km SSW of Oak Harbor, Washington
  3. 1.6 4 km ENE of Oak Harbor, Washington
  4. 3.0 1 km WSW of Bell Hill, Washington
  5. 1.7 11 km WNW of Ault Field, Washington
  6. 1.8 13 km WSW of Anacortes, Washington
  7. 2.0 6 km ESE of Quilcene, Washington
  8. 1.5 5 km SE of Port Ludlow, Washington
  9. 2.3 3 km SSW of Clinton, Washington
  10. 1.9 4 km W of Hansville, Washington
  11. 1.8 6 km WSW of Clinton, Washington
  12. 2.6 6 km WSW of Clinton, Washington
  13. 2.2 8 km SW of Warm Beach, Washington
  14. 1.6 4 km NNW of Lofall, Washington
  15. 1.8 17 km WNW of Coupeville, 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

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