QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Fall City, WA

No earthquake was likely felt in Fall City in the 24 hours to 5:03 pm PST (01:03 UTC). The last one was M 4.2, 65 km (41 mi) WSW, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS. Every earthquake near Fall City

This page: a magnitude 2.3 earthquake was recorded in Fall City, WA, at 2:24 pm PDT on 3 June 2024 (21:24 UTC), 2.6 km deep. 17 people have reported feeling it to USGS.

USGS: 1 km S of Fall City, Washington

12 km (7 mi) ESE of Sammamish, WA · 35 km (22 mi) ESE of Seattle, WA

2:24 pm PDT, Jun 3, 2024 · · 2.6 km deep · released about 91 lb of TNT

Every earthquake near Fall City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 8 kmSnohomish County 56 kmKitsap County 58 kmPierce County 59 kmIsland County 89 kmThurston County 99 kmMason County 99 kmChelan County 101 kmKittitas County 103 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
2:24 pm PDT on 3 June 2024 ()
Where
in Fall City, WA · earthquakes near Fall City
Magnitude
M 2.3 (ml)
Depth
2.6 km below the surface
Felt
17 reports · strongest reported intensity IV
Nearest
King County, 8 km SSE
Nearest mapped fault
Rattlesnake Mountain fault, under 1 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 818 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 20 km (12 mi) from the epicentre. 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.

Likely felt in: Fall City in town, intensity III · Snoqualmie 6 km, intensity III · Issaquah 11 km, intensity II · City of Sammamish 12 km, intensity II · West Lake Sammamish 16 km, intensity II · Sammamish 17 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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

The largest earthquake within 50 km since 2016 was M 4.6 on 2019-07-12 — about 2,500 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 6.7 1 km ENE of Dash Point, Washington · 47 km WSW of this epicentre
  2. 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 23 km N of this epicentre
  3. 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 22 km NNE of this epicentre
  4. 5.0 3 km WSW of Des Moines, Washington · 40 km WSW 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 47.5557, -121.8895. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
King County, WA 8 km (5 mi) SSE earthquakes near King County
Snohomish County, WA 56 km (35 mi) N earthquakes near Snohomish County
Kitsap County, WA 58 km (36 mi) W earthquakes near Kitsap County
Pierce County, WA 59 km (37 mi) SSW earthquakes near Pierce County
Island County, WA 89 km (55 mi) NW earthquakes near Island County
Thurston County, WA 99 km (61 mi) SW earthquakes near Thurston County

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

Aftershocks so far

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

  1. 3.3 8 km NNE of Snoqualmie, Washington
  2. 2.3 1 km NE of Lakeland North, Washington
  3. 2.4 8 km ENE of Fall City, Washington
  4. 3.4 6 km SSE of Lea Hill, Washington
  5. 1.5 2 km SSW of Monroe, Washington
  6. 2.1 7 km ENE of Fall City, Washington
  7. 1.7 7 km NE of Fall City, Washington
  8. 1.6 11 km W of Greenwater, Washington
  9. 1.6 7 km NE of Fall City, Washington
  10. 1.9 7 km ENE of Fall City, Washington
  11. 2.8 8 km ENE of Fall City, Washington
  12. 2.1 7 km ENE of Fall City, Washington
  13. 3.5 9 km NE of Snoqualmie, Washington
  14. 1.8 7 km NE of Fall City, Washington
  15. 1.7 3 km ENE of Buckley, 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.