Earthquake · reviewed by a seismologist
M 1.8ml
2 km S of Colwood, Canada
Yes. A magnitude 1.8 earthquake was recorded 2 km S of Colwood, Canada, at 5:07 pm PDT on 23 October 2026 (00:07 UTC), 12 km deep.
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- San Juan County, 31 km ENE
- Nearest mapped fault
- Utsalady Point fault, 2 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 20 days ago
Earthquake alerts for Port Angeles, WA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 7 km (4 mi) from the epicentre. 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.
How big was it?
This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
- Magna, Utah 2020 M 5.7 660,000× the energy of this one
- Around the size people start to feel M 3.0 59× the energy of this one
- This earthquake M 1.8 about 16 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 48.4112, -123.4922. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Juan County, WA | 31 km (19 mi) | ENE | earthquakes near San Juan County |
| Clallam County, WA | 45 km (28 mi) | SW | earthquakes near Clallam County |
| Island County, WA | 67 km (42 mi) | ESE | earthquakes near Island County |
| Jefferson County, WA | 67 km (42 mi) | S | earthquakes near Jefferson County |
| Kitsap County, WA | 106 km (66 mi) | SE | earthquakes near Kitsap County |
| Mason County, WA | 120 km (75 mi) | SSE | earthquakes near Mason County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 0.9 7 km W of Orcas, Washington
- 1.3 4 km NNW of Victoria, Canada
- 1.2 11 km SW of Friday Harbor, Washington
- 1.4 8 km SW 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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| location | 3 km S of Colwood, Canada | 2 km S of Colwood, Canada | |
| longitude | -123.48 | -123.49 | |
| latitude | 48.4 | 48.41 | |
| depth | 4.79 | 11.91 | |
| magnitude | 1.84 | 1.82 | |
| review status | automatic | reviewed | |
| longitude | -123.49 | -123.48 | |
| latitude | 48.4 | 48.4 | |
| depth | 3.75 | 4.79 | |
| magnitude | 1.9 | 1.84 |
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.