QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

10 km SSE of Port Angeles East, Washington

· -0.3 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 27 kmClallam County 43 kmIsland County 52 kmSan Juan County 58 kmKitsap County 66 kmMason County 75 kmGrays Harbor County 106 kmSnohomish 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 1.6 (ml)
Depth
-0.3 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Jefferson County, 27 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 874 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.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 6.4 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 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 48.0118, -123.3362. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 27 km (17 mi) NNE of here earthquakes near Jefferson County
Clallam County, WA 43 km (26 mi) ESE of here earthquakes near Clallam County
Island County, WA 52 km (32 mi) WSW of here earthquakes near Island County
San Juan County, WA 58 km (36 mi) SSW of here earthquakes near San Juan County
Kitsap County, WA 66 km (41 mi) NW of here earthquakes near Kitsap County
Mason County, WA 75 km (46 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

45 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. 1.7 35 km NE of Amanda Park, Washington
  4. 1.6 8 km S of Port Hadlock-Irondale, Washington
  5. 2.5 11 km SSW of River Road, Washington
  6. 1.6 5 km SSE of Quilcene, Washington
  7. 1.9 14 km NNE of Port Angeles East, Washington
  8. 1.8 21 km S of Port Angeles East, Washington
  9. 2.4 40 km NE of Amanda Park, Washington
  10. 2.4 11 km S of Metchosin, Canada
  11. 2.0 35 km NE of Amanda Park, Washington
  12. 1.7 2 km S of River Road, Washington
  13. 1.6 2 km W of Port Townsend, Washington
  14. 1.6 3 km W of Quilcene, Washington
  15. 1.8 10 km S of Victoria, 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 6,200 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.