QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

5 km SW of Chelan Falls, Washington

· -0.6 km deep · released about 7.3 lb of TNT

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10 km30 km60 km120 km N Douglas County 25 kmChelan County 45 kmGrant County 74 kmKittitas County 86 kmOkanogan County 90 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
-0.6 km below the surface
Felt
no reports yet
Nearest
Douglas County, 25 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 days ago

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

How big was it?

This earthquake released about 7.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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 47.7633, -120.0282. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Douglas County, WA 25 km (16 mi) W of here earthquakes near Douglas County
Chelan County, WA 45 km (28 mi) ESE of here earthquakes near Chelan County
Grant County, WA 74 km (46 mi) NW of here earthquakes near Grant County
Kittitas County, WA 86 km (54 mi) NE of here earthquakes near Kittitas County
Okanogan County, WA 90 km (56 mi) SSW of here earthquakes near Okanogan County
Ferry County, WA 136 km (85 mi) SW of here earthquakes near Ferry County

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

Aftershocks so far

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

  1. 0.9 5 km ENE of Entiat, Washington
  2. 2.3 4 km NW of Waterville, Washington
  3. 1.7 7 km WSW of Chelan, Washington
  4. 1.6 12 km W of Entiat, Washington
  5. 1.9 10 km SSW of Granite Falls, Washington
  6. 1.7 23 km NW of Granite Falls, Washington
  7. 1.5 7 km SSE of Chelan Falls, Washington
  8. 1.8 12 km WNW of Mansfield, Washington
  9. 1.6 13 km E of Waterville, Washington
  10. 1.8 7 km W of Entiat, Washington
  11. 2.5 4 km NW of Waterville, Washington
  12. 1.6 15 km WSW of Methow, Washington
  13. 2.4 5 km SSW of Chelan Falls, Washington
  14. 1.8 2 km NNE of Entiat, Washington
  15. 2.6 10 km WNW of Entiat, 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.