QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

1 km NNW of Port Angeles East, Washington

· 41 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 37 kmClallam County 38 kmSan Juan County 48 kmIsland County 53 kmKitsap County 76 kmMason County 87 kmGrays Harbor County 117 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 1.5 (ml)
Depth
41 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Jefferson County, 37 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 346 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 48.1203, -123.3832. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 37 km (23 mi) NNE of here earthquakes near Jefferson County
Clallam County, WA 38 km (23 mi) E of here earthquakes near Clallam County
San Juan County, WA 48 km (30 mi) SSW of here earthquakes near San Juan County
Island County, WA 53 km (33 mi) W of here earthquakes near Island County
Kitsap County, WA 76 km (48 mi) NW of here earthquakes near Kitsap County
Mason County, WA 87 km (54 mi) N of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 2.1 6 km ENE of Bell Hill, Washington
  2. 1.8 34 km NE of Amanda Park, Washington
  3. 2.5 11 km SSW of River Road, Washington
  4. 1.9 14 km NNE of Port Angeles East, Washington
  5. 1.8 21 km S of Port Angeles East, Washington
  6. 2.4 40 km NE of Amanda Park, Washington
  7. 2.4 11 km S of Metchosin, Canada
  8. 2.0 35 km NE of Amanda Park, Washington
  9. 1.7 2 km S of River Road, Washington
  10. 1.6 3 km W of Quilcene, Washington
  11. 1.6 3 km N of Langford, Canada
  12. 1.8 10 km S of Victoria, Canada
  13. 2.3 5 km SSE of Esquimalt, Canada
  14. 2.9 8 km SW of Port Angeles, Washington
  15. 1.7 6 km SW of Saanichton, Canada

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 7,200 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.