QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Port Angeles, WA

No earthquake was likely felt in Port Angeles in the 24 hours to 3:22 am PST (11:22 UTC). The last one was M 4.2, 96 km (60 mi) SE, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS. Every earthquake near Port Angeles

This page: a magnitude 1.5 earthquake was recorded 38 km (23 mi) south-southeast of Port Angeles, WA, at 3:24 am PDT on 23 October 2026 (10:24 UTC), 40 km deep.

USGS: 23 km W of Quilcene, Washington

67 km (42 mi) WNW of Seattle, WA

3:24 am PDT, Oct 23, 2026 · · 40 km deep · released about 4.8 lb of TNT

10 km30 km60 km120 km N Jefferson County 25 kmKitsap County 45 kmMason County 52 kmIsland County 54 kmClallam County 61 kmSan Juan County 77 kmGrays Harbor County 92 kmThurston County 102 kmKing County 108 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
3:24 am PDT on 23 October 2026 ()
Where
38 km (23 mi) south-southeast of Port Angeles, WA · earthquakes near Port Angeles
Magnitude
M 1.5 (ml)
Depth
40 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 25 km W
Nearest mapped fault
Lake Creek-Boundary Creek fault, 24 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 21 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Sequim.

How big was it?

This earthquake released about 4.8 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 3,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 200× the energy of this one
  4. This earthquake M 1.5 about 4.8 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.3 on 2023-10-09 — about 18,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.3 Eastern Olympic Peninsula, Washington · 15 km E of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 47.8185, -123.1960. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jefferson County, WA 25 km (15 mi) W earthquakes near Jefferson County
Kitsap County, WA 45 km (28 mi) ESE earthquakes near Kitsap County
Mason County, WA 52 km (32 mi) S earthquakes near Mason County
Island County, WA 54 km (34 mi) NE earthquakes near Island County
Clallam County, WA 61 km (38 mi) WNW earthquakes near Clallam County
San Juan County, WA 77 km (48 mi) N earthquakes near San Juan County

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

Aftershocks so far

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

  1. 1.8 4 km SSW of Port Ludlow, Washington
  2. 0.5 6 km WNW of Gorst, Washington
  3. -0.3 10 km NW of Belfair, Washington
  4. 1.3 4 km WSW of Erlands Point-Kitsap Lake, Washington
  5. 0.9 0 km WNW of Rocky Point, Washington
  6. 0.9 5 km SE of Quilcene, Washington
  7. 1.1 8 km NNE of Quilcene, Washington
  8. 0.4 7 km SSE of Quilcene, Washington
  9. 1.3 5 km WSW of Port Ludlow, Washington
  10. 1.4 8 km SW of Port Angeles, Washington
  11. 1.5 7 km W of Gorst, Washington
  12. 0.4 9 km ENE of Hoodsport, Washington
  13. 1.1 6 km NNE of Brinnon, Washington
  14. 0.4 4 km SE of Quilcene, 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.