QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

3 km SW of Redmond, Washington

· 5.0 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 30 kmKitsap County 37 kmSnohomish County 54 kmPierce County 67 kmIsland County 69 kmMason County 84 kmThurston County 94 kmSkagit County 97 kmJefferson County 104 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
5.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
King County, 30 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2339 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 47.6495, -122.1523. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 30 km (18 mi) NW of here earthquakes near King County
Kitsap County, WA 37 km (23 mi) E of here earthquakes near Kitsap County
Snohomish County, WA 54 km (33 mi) SSW of here earthquakes near Snohomish County
Pierce County, WA 67 km (41 mi) N of here earthquakes near Pierce County
Island County, WA 69 km (43 mi) SE of here earthquakes near Island County
Mason County, WA 84 km (52 mi) ENE of here earthquakes near Mason 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. 2.0 2 km W of Union Hill-Novelty Hill, Washington
  2. 1.9 3 km N of White Center, Washington
  3. 2.1 Washington
  4. 1.8 2 km WSW of Shoreline, Washington
  5. 1.6 Puget Sound region, Washington
  6. 2.5 3 km W of Monroe, Washington
  7. 1.8 5 km W of Wilderness Rim, Washington
  8. 1.6 3 km SSE of May Creek, Washington
  9. 1.9 1 km SSE of Parkwood, Washington
  10. 2.7 11 km SW of Index, Washington
  11. 1.7 3 km SSW of Roosevelt, Washington
  12. 2.3 4 km NNW of Lakeland North, Washington
  13. 1.6 3 km ESE of Klahanie, Washington
  14. 2.7 2 km S of Ravensdale, Washington
  15. 1.7 3 km WNW of Wauna, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2019-07-12 — it released about 12,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.