QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Bremerton, WA

No earthquake was likely felt in Bremerton in the 24 hours to 6:44 am PST (14:44 UTC). The last one was M 4.2, 20 km (12 mi) SSW, at 2:05 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 9,329 felt reports to USGS. Every earthquake near Bremerton

This page: a magnitude 2.3 earthquake was recorded 49 km (31 mi) west-northwest of Bremerton, WA, at 10:02 am PST on 15 January 2024 (18:02 UTC), 47 km deep.

USGS: 24 km W of Quilcene, Washington

66 km (41 mi) WNW of Seattle, WA

10:02 am PST, Jan 15, 2024 · · 47 km deep · released about 98 lb of TNT

10 km30 km60 km120 km N Jefferson County 25 kmKitsap County 45 kmMason County 50 kmIsland County 56 kmClallam County 62 kmSan Juan County 79 kmGrays Harbor County 90 kmThurston County 100 kmKing County 108 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
10:02 am PST on 15 January 2024 ()
Where
49 km (31 mi) west-northwest of Bremerton, WA · earthquakes near Bremerton
Magnitude
M 2.3 (ml)
Depth
47 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 25 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1033 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Bremerton, 49 km away, the estimate is intensity I (not felt). 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.

How big was it?

This earthquake released about 98 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 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 4.3 on 2023-10-09 — about 900 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.3 Eastern Olympic Peninsula, Washington · 15 km E 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 47.7972, -123.1970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Jefferson County, WA 25 km (15 mi) W earthquakes near Jefferson County
Kitsap County, WA 45 km (28 mi) ESE earthquakes near Kitsap County
Mason County, WA 50 km (31 mi) S earthquakes near Mason County
Island County, WA 56 km (35 mi) NE earthquakes near Island County
Clallam County, WA 62 km (39 mi) NW earthquakes near Clallam County
San Juan County, WA 79 km (49 mi) N earthquakes near San Juan 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. 2.1 7 km NW of Jamestown, Washington
  2. 2.1 2 km S of River Road, Washington
  3. 1.5 5 km S of Port Ludlow, Washington
  4. 1.6 7 km NE of Quilcene, Washington
  5. 1.9 4 km WSW of Erlands Point-Kitsap Lake, Washington
  6. 3.9 14 km SW of Blyn, Washington
  7. 2.8 0 km ENE of Tracyton, Washington
  8. 1.7 35 km W of Brinnon, Washington
  9. 2.2 7 km NNW of Hoodsport, Washington
  10. 1.5 5 km ESE of Quilcene, Washington
  11. 1.8 4 km SSW of Port Ludlow, Washington
  12. 1.9 6 km SSW of River Road, Washington
  13. 1.5 16 km SW of Brinnon, Washington
  14. 2.3 7 km ESE of Quilcene, Washington
  15. 2.2 7 km E of Quilcene, 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.