QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Omak, WA

USGS: 11 km NNW of Riverside, Washington

10:35 am PDT, Jul 16, 2017 · · 0.5 km deep · released about 60 lb of TNT

Every earthquake near Omak Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Okanogan County 15 kmFerry County 76 kmDouglas County 96 kmChelan County 114 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
10:35 am PDT on 16 July 2017 ()
Where
21 km (13 mi) N of Omak, WA · earthquakes near Omak
Magnitude
M 2.2 (ml)
Depth
0.5 km below the surface
Felt
no reports yet
Nearest
Okanogan County, 15 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3366 days ago

A magnitude 2.2 earthquake was recorded 21 km (13 mi) N of Omak, WA, at 10:35 am PDT on 16 July 2017 (17:35 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Tonasket, Okanogan.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 48.5997, -119.5513. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Okanogan County, WA 15 km (9 mi) WSW earthquakes near Okanogan County
Ferry County, WA 76 km (47 mi) E earthquakes near Ferry County
Douglas County, WA 96 km (60 mi) S earthquakes near Douglas County
Chelan County, WA 114 km (71 mi) SW earthquakes near Chelan County
Lincoln County, WA 141 km (88 mi) SE earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 2.5 6 km NW of Tonasket, Washington
  2. 1.8 8 km NW of Tonasket, Washington
  3. 1.6 8 km NW of Tonasket, Washington
  4. 2.8 8 km NW of Tonasket, Washington
  5. 2.7 6 km NW of Tonasket, Washington
  6. 1.6 9 km NW of Tonasket, Washington
  7. 2.5 6 km NW of Tonasket, Washington
  8. 2.1 9 km NW of Tonasket, Washington
  9. 3.2 7 km NW of Tonasket, Washington
  10. 1.7 8 km NW of Tonasket, Washington
  11. 2.1 7 km NW of Tonasket, Washington
  12. 2.7 5 km NW of Tonasket, Washington
  13. 2.5 6 km NW of Tonasket, Washington
  14. 1.9 6 km NW of Tonasket, Washington
  15. 2.2 9 km NW of Tonasket, 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.