QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Ellensburg, WA

No earthquake was likely felt in Ellensburg in the 24 hours to 10:19 am PST (18:19 UTC). The last one was M 1.8, 10 km (6 mi) SSW, at 11:34 am PDT on 10 July 2026, estimated intensity II (weak) in town. Every earthquake near Ellensburg

This page: a magnitude 1.7 earthquake was recorded 37 km (23 mi) east of Ellensburg, WA, at 3:11 pm PDT on 28 May 2024 (22:11 UTC), 10 km deep.

USGS: 5 km W of Vantage, Washington

54 km (33 mi) NE of Yakima, WA

3:11 pm PDT, May 28, 2024 · · 10 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Kittitas County 51 kmGrant County 54 kmYakima County 75 kmBenton County 89 kmDouglas County 93 kmFranklin County 99 kmChelan County 111 kmAdams County 118 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
3:11 pm PDT on 28 May 2024 ()
Where
37 km (23 mi) east of Ellensburg, WA · earthquakes near Ellensburg
Magnitude
M 1.7 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Kittitas County, 51 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 740 days ago

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. In Ellensburg, 37 km away, the estimate is intensity I (not felt). 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: Mattawa, Kittitas.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 46.9388, -120.0613. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kittitas County, WA 51 km (32 mi) WNW earthquakes near Kittitas County
Grant County, WA 54 km (34 mi) NE earthquakes near Grant County
Yakima County, WA 75 km (46 mi) SW earthquakes near Yakima County
Benton County, WA 89 km (56 mi) SSE earthquakes near Benton County
Douglas County, WA 93 km (58 mi) NNE earthquakes near Douglas County
Franklin County, WA 99 km (61 mi) ESE earthquakes near Franklin County

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

Aftershocks so far

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

  1. 1.6 19 km S of Kittitas, Washington
  2. 1.4 3 km NNW of Quincy, Washington
  3. 1.0 2 km NE of Yakima, Washington
  4. 1.1 6 km ESE of Kittitas, Washington
  5. 1.6 11 km N of Selah, Washington
  6. 1.5 11 km N of Selah, Washington
  7. 1.8 9 km SSW of Ellensburg, Washington
  8. 2.0 20 km SW of Desert Aire, Washington
  9. 1.7 3 km ESE of Kittitas, Washington
  10. 2.1 11 km NNE of Selah, Washington
  11. 1.7 24 km E of Desert Aire, Washington
  12. 1.9 0 km SW of Selah, Washington
  13. 1.9 1 km SSW of Selah, Washington
  14. 2.0 9 km S of Ellensburg, Washington
  15. 1.9 9 km S of Ellensburg, 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.