QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

5 km SSE of Seattle, Washington

· 16 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 28 kmKing County 36 kmPierce County 58 kmSnohomish County 67 kmMason County 70 kmIsland County 71 kmThurston County 81 kmJefferson County 96 kmSkagit County 109 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
16 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 28 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 998 days ago

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.

Where

Epicentre 47.5668, -122.2970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 28 km (17 mi) ESE of here earthquakes near Kitsap County
King County, WA 36 km (22 mi) WNW of here earthquakes near King County
Pierce County, WA 58 km (36 mi) N of here earthquakes near Pierce County
Snohomish County, WA 67 km (42 mi) SW of here earthquakes near Snohomish County
Mason County, WA 70 km (44 mi) ENE of here earthquakes near Mason County
Island County, WA 71 km (44 mi) SSE of here earthquakes near Island County

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

Aftershocks so far

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

  1. 1.7 1 km NE of White Center, Washington
  2. 1.8 1 km E of Enetai, Washington
  3. 2.2 3 km SW of Redmond, Washington
  4. 1.7 2 km NW of Manchester, Washington
  5. 2.5 4 km WSW of Artondale, Washington
  6. 2.0 6 km WNW of Lofall, Washington
  7. 1.7 5 km SW of Port Ludlow, Washington
  8. 2.6 7 km WNW of Lofall, Washington
  9. 2.3 0 km ESE of Waller, Washington
  10. 1.9 6 km ENE of Lofall, Washington
  11. 2.2 8 km ENE of Quilcene, Washington
  12. 2.7 2 km E of Redmond, Washington
  13. 2.0 6 km NE of Snoqualmie, Washington
  14. 1.5 2 km N of Edmonds, Washington
  15. 1.6 3 km WNW of Shoreline, 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.