QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Toppenish, WA

USGS: 19 km NNW of Bickleton, Washington

49 km (31 mi) SSE of Yakima, WA

5:30 pm PDT, Apr 24, 2021 · · 19 km deep · released about 49 lb of TNT

10 km30 km60 km120 km N Yakima County 42 kmKlickitat County 43 kmBenton County 69 kmGilliam County 87 kmSherman County 87 kmMorrow County 103 kmKittitas County 109 kmSkamania County 120 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
5:30 pm PDT on 24 April 2021 ()
Where
26 km (16 mi) SSW of Toppenish, WA · earthquakes near Toppenish
Magnitude
M 2.1 (ml)
Depth
19 km below the surface
Felt
2 reports · strongest reported intensity II
Measured shaking
intensity III (ShakeMap)
Nearest
Yakima County, 42 km NW
Nearest mapped fault
Toppenish Ridge structures, 13 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 1987 days ago

A magnitude 2.1 earthquake was recorded 26 km (16 mi) SSW of Toppenish, WA, at 5:30 pm PDT on 24 April 2021 (00:30 UTC). 2 people have reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Granger, Zillah.

How big was it?

This earthquake released about 49 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 46.1568, -120.4112. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yakima County, WA 42 km (26 mi) NW earthquakes near Yakima County
Klickitat County, WA 43 km (27 mi) SW earthquakes near Klickitat County
Benton County, WA 69 km (43 mi) E earthquakes near Benton County
Gilliam County, OR 87 km (54 mi) S earthquakes near Gilliam County
Sherman County, OR 87 km (54 mi) SSW earthquakes near Sherman County
Morrow County, OR 103 km (64 mi) SE earthquakes near Morrow County

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

Aftershocks so far

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

  1. 0.7 7 km W of Ahtanum, Washington
  2. 0.9 22 km SSE of Harrah, Washington
  3. 2.1 12 km SSE of Bickleton, Washington
  4. 1.5 17 km SSE of White Swan, Washington
  5. 3.1 5 km WSW of Harrah, Washington
  6. 2.0 20 km SW of Desert Aire, Washington
  7. 1.7 20 km S of White Swan, Washington
  8. 1.7 1 km SSE of Goldendale, Washington
  9. 1.7 8 km N of Roosevelt, Washington
  10. 1.5 17 km NNE of Roosevelt, Washington
  11. 1.5 13 km NNE of Roosevelt, Washington
  12. 2.0 8 km SSE of Bickleton, Washington
  13. 1.5 7 km ESE of Tampico, Washington
  14. 1.8 19 km NW of Bickleton, Washington
  15. 2.0 3 km ESE of Goldendale, 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.