QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

21 km N of Trout Lake, Washington

· -0.6 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 39 kmYakima County 66 kmKlickitat County 67 kmHood River County 77 kmLewis County 79 kmClark County 88 kmCowlitz County 89 kmMultnomah County 100 kmPierce County 107 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 1.9 (ml)
Depth
-0.6 km below the surface
Felt
no reports yet
Nearest
Skamania County, 39 km WSW
Nearest mapped fault
Toppenish Ridge structures, 19 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 798 days ago

A magnitude 1.9 earthquake was recorded 21 km N of Trout Lake, Washington at 12:11 UTC on 2024-07-26. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 lists one earthquake of M5 or more within 50 km:

  1. 5.0 23 km ESE of Packwood, Washington · 38 km NNE of this epicentre

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 46.1943, -121.5170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Skamania County, WA 39 km (24 mi) WSW earthquakes near Skamania County
Yakima County, WA 66 km (41 mi) ENE earthquakes near Yakima County
Klickitat County, WA 67 km (42 mi) ESE earthquakes near Klickitat County
Hood River County, OR 77 km (48 mi) S earthquakes near Hood River County
Lewis County, WA 79 km (49 mi) WNW earthquakes near Lewis County
Clark County, WA 88 km (55 mi) WSW earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.0 23 km N of Trout Lake, Washington
  2. 0.8 24 km N of Trout Lake, Washington
  3. 0.8 23 km N of Trout Lake, Washington
  4. 0.9 23 km N of Trout Lake, Washington
  5. 0.9 23 km N of Trout Lake, Washington
  6. 2.6 23 km N of Trout Lake, Washington
  7. 1.1 23 km N of Trout Lake, Washington
  8. 0.9 10 km SW of Packwood, Washington
  9. 1.5 20 km S of Packwood, Washington
  10. 1.6 3 km S of Packwood, Washington
  11. 1.9 4 km SW of Packwood, Washington
  12. 2.3 5 km SW of Packwood, Washington
  13. 1.9 5 km NW of White Salmon, Washington
  14. 1.7 41 km SSE of Morton, Washington
  15. 2.2 23 km NNW of Carson, 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.