QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Tacoma, WA

No earthquake was likely felt in Tacoma in the 24 hours to 2:44 pm PST (22:44 UTC). The last one was M 4.2, 27 km (17 mi) NW, at 2:05 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 9,329 felt reports to USGS. Every earthquake near Tacoma

This page: a magnitude 1.8 earthquake was recorded 37 km (23 mi) south of Tacoma, WA, at 2:07 pm PST on 30 December 2025 (22:07 UTC), 23 km deep. 1 person has reported feeling it to USGS.

USGS: 4 km ESE of McKenna, Washington

78 km (49 mi) S of Seattle, WA · 26 km (16 mi) ESE of Lacey, WA

2:07 pm PST, Dec 30, 2025 · · 23 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Thurston County 25 kmPierce County 30 kmLewis County 39 kmMason County 70 kmKitsap County 81 kmKing County 81 kmCowlitz County 82 kmWahkiakum County 99 kmGrays Harbor 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
2:07 pm PST on 30 December 2025 ()
Where
37 km (23 mi) south of Tacoma, WA · earthquakes near Tacoma
Magnitude
M 1.8 (ml)
Depth
23 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Thurston County, 25 km W
Nearest mapped fault
Olympia structure, 11 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 317 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 Tacoma, 37 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.

Earthquakes near other towns within 30 km: Yelm, North Yelm, Rainier, Elk Plain, Eatonville, Spanaway.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 4 earthquakes of M5 or more within 50 km:

  1. 6.8 The 2001 Nisqually, Washington Earthquake · 31 km NW of this epicentre
  2. 6.7 4 km WNW of Roy, Washington · 13 km NW of this epicentre
  3. 6.7 1 km ENE of Dash Point, Washington · 45 km N of this epicentre
  4. 5.8 Puget Sound area, Washington · 50 km NW 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 46.9223, -122.4998. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Thurston County, WA 25 km (16 mi) W earthquakes near Thurston County
Pierce County, WA 30 km (19 mi) ENE earthquakes near Pierce County
Lewis County, WA 39 km (24 mi) SSE earthquakes near Lewis County
Mason County, WA 70 km (43 mi) NW earthquakes near Mason County
Kitsap County, WA 81 km (50 mi) N earthquakes near Kitsap County
King County, WA 81 km (50 mi) NE earthquakes near King 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. 0.9 2 km SW of Ashford, Washington
  2. 0.5 13 km SE of Carbonado, Washington
  3. 0.3 15 km SSE of Carbonado, Washington
  4. 0.4 2 km SSE of Carbonado, Washington
  5. 1.0 4 km E of Mossyrock, Washington
  6. 0.7 6 km SE of Mossyrock, Washington
  7. -0.1 13 km NNE of Ashford, Washington
  8. 1.1 3 km NNW of Dash Point, Washington
  9. 0.3 11 km SSE of Carbonado, Washington
  10. 0.3 18 km SSE of Carbonado, Washington
  11. 0.7 5 km SSW of Morton, Washington
  12. 2.1 3 km NNW of Kapowsin, Washington
  13. 1.0 4 km WSW of Mineral, Washington
  14. 1.3 14 km NNE of Ashford, Washington
  15. 1.2 12 km S of Rainier, 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.