QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Tumwater, WA

USGS: 6 km WNW of Tumwater, Washington

8 km (5 mi) WSW of Olympia, WA · 82 km (51 mi) SW of Seattle, WA

1:10 pm PST, Feb 10, 2017 · · 46 km deep · released about 32 lb of TNT

10 km30 km60 km120 km N Thurston County 16 kmMason County 39 kmGrays Harbor County 64 kmPierce County 64 kmLewis County 68 kmKitsap County 73 kmPacific County 79 kmWahkiakum County 87 kmCowlitz County 95 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
1:10 pm PST on 10 February 2017 ()
Where
7 km (4 mi) WNW of Tumwater, WA · earthquakes near Tumwater
Magnitude
M 2.0 (ml)
Depth
46 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Thurston County, 16 km SE
Nearest mapped fault
Olympia structure, 7 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 3170 days ago

A magnitude 2.0 earthquake was recorded 7 km (4 mi) WNW of Tumwater, WA, at 1:10 pm PST on 10 February 2017 (21:10 UTC). 1 person has reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Olympia, Lacey, Tanglewilde, Tanglewilde-Thompson Place, McCleary, Tenino.

How big was it?

This earthquake released about 32 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 470,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 330,000× the energy of this one
  3. Around the size people start to feel M 3.0 30× the energy of this one
  4. This earthquake M 2.0 about 32 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 7 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 The 2001 Nisqually, Washington Earthquake · 25 km NE of this epicentre
  2. 6.7 4 km WNW of Roy, Washington · 30 km E of this epicentre
  3. 6.1 Puget Sound region, Washington · 46 km NNE of this epicentre
  4. 5.8 Puget Sound area, Washington · 30 km NNE of this epicentre
  5. 5.8 8 km N of Satsop, Washington · 36 km W 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 47.0218, -122.9948. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Thurston County, WA 16 km (10 mi) SE earthquakes near Thurston County
Mason County, WA 39 km (24 mi) NNW earthquakes near Mason County
Grays Harbor County, WA 64 km (40 mi) W earthquakes near Grays Harbor County
Pierce County, WA 64 km (40 mi) E earthquakes near Pierce County
Lewis County, WA 68 km (42 mi) SE earthquakes near Lewis County
Kitsap County, WA 73 km (46 mi) NNE earthquakes near Kitsap 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. 1.7 3 km WNW of Wauna, Washington
  2. 2.1 1 km SW of Home, Washington
  3. 2.4 1 km SSW of Home, Washington
  4. 1.6 2 km WSW of Home, Washington
  5. 2.7 3 km S of Home, Washington
  6. 2.2 5 km SE of Shelton, Washington
  7. 1.6 Puget Sound region, Washington
  8. 1.8 11 km S of Shelton, Washington
  9. 2.0 11 km SSW of Shelton, Washington
  10. 1.7 4 km S of Skokomish, Washington
  11. 2.1 2 km S of Grapeview, Washington
  12. 1.7 3 km ESE of Belfair, Washington
  13. 1.7 3 km WNW of Belfair, Washington
  14. 2.1 1 km NNW of Artondale, Washington
  15. 1.7 18 km N of Satsop, 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.