QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

28 km SSW of Port Angeles, Washington

· 36 km deep · released about 7.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 12 kmClallam County 31 kmMason County 69 kmIsland County 76 kmSan Juan County 78 kmKitsap County 78 kmGrays Harbor 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
Magnitude
M 1.6 (ml)
Depth
36 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 12 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1442 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 7.1 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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.

Where

Epicentre 47.8978, -123.6185. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 12 km (8 mi) NNW of here earthquakes near Jefferson County
Clallam County, WA 31 km (19 mi) SE of here earthquakes near Clallam County
Mason County, WA 69 km (43 mi) NNW of here earthquakes near Mason County
Island County, WA 76 km (47 mi) WSW of here earthquakes near Island County
San Juan County, WA 78 km (48 mi) SSW of here earthquakes near San Juan County
Kitsap County, WA 78 km (48 mi) WNW of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 1.9 14 km NNE of Port Angeles East, Washington
  2. 1.8 21 km S of Port Angeles East, Washington
  3. 2.4 40 km NE of Amanda Park, Washington
  4. 2.4 11 km S of Metchosin, Canada
  5. 2.0 35 km NE of Amanda Park, Washington
  6. 1.7 2 km S of River Road, Washington
  7. 2.9 8 km SW of Port Angeles, Washington
  8. 2.8 21 km NW of Hoodsport, Washington
  9. 1.5 1 km NNW of Port Angeles East, Washington
  10. 1.5 12 km NNW of Amanda Park, Washington
  11. 1.6 15 km NNE of Amanda Park, Washington
  12. 1.6 24 km SSW of River Road, Washington
  13. 2.2 25 km W of Brinnon, Washington
  14. 2.8 16 km SSW of River Road, Washington
  15. 1.9 5 km NNE of Port Angeles, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2018-11-19 — it released about 5,600 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.