QuakeIndex

Earthquake · reviewed by a seismologist

M 4.5ml

2025 Orcas Island, Washington

· 16 km deep · released about 85 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 25 kmIsland County 51 kmSkagit County 74 kmWhatcom County 76 kmClallam County 98 kmSnohomish County 99 kmJefferson County 104 kmKitsap County 109 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 4.5 (ml)
Depth
16 km below the surface
Felt
11411 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
San Juan County, 25 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 72 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 11411 people have reported feeling it to USGS.

How big was it?

This earthquake released about 85 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 2,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 89× the energy of this one
  3. Magna, Utah 2020 M 5.7 63× the energy of this one
  4. This earthquake M 4.5 about 85 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 180× more

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 48.6112, -122.8052. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 25 km (15 mi) ENE of here earthquakes near San Juan County
Island County, WA 51 km (32 mi) N of here earthquakes near Island County
Skagit County, WA 74 km (46 mi) W of here earthquakes near Skagit County
Whatcom County, WA 76 km (47 mi) WSW of here earthquakes near Whatcom County
Clallam County, WA 98 km (61 mi) NE of here earthquakes near Clallam County
Snohomish County, WA 99 km (61 mi) NW of here earthquakes near Snohomish County

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

Aftershocks so far

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

  1. 2.7 5 km N of Anacortes, Washington
  2. 1.8 4 km SSW of Anacortes, Washington
  3. 1.5 7 km WNW of Friday Harbor, Washington
  4. 1.6 3 km SE of Alger, Washington
  5. 1.6 4 km SSE of Mount Vernon, Washington
  6. 2.7 12 km WSW of Anacortes, Washington
  7. 1.9 10 km ESE of Salt Spring Island, Canada
  8. 1.8 8 km W of Ault Field, Washington
  9. 2.3 1 km NNE of La Conner, Washington
  10. 1.9 3 km E of Bay View, Washington
  11. 2.1 4 km SE of Mount Vernon, Washington
  12. 2.0 4 km WNW of Edison, Washington
  13. 2.2 2 km NNE of La Conner, Washington
  14. 1.8 9 km WNW of White Rock, Canada
  15. 2.1 2 km NNE of La Conner, 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.