QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Earthquake near Enetai, WA

No earthquake was likely felt in Enetai in the 24 hours to 5:23 am PST (13:23 UTC). The last one was M 4.2, 23 km (14 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 Enetai

This page: a magnitude 3.3 earthquake was recorded in Enetai, WA, at 12:20 pm PDT on 3 May 2017 (19:20 UTC), 27 km deep. 230 people have reported feeling it to USGS.

USGS: 1 km S of Enetai, Washington

19 km (12 mi) WSW of Seattle, WA

12:20 pm PDT, May 3, 2017 · · 27 km deep · released about 1.4 tons of TNT

Every earthquake near Enetai Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 9 kmMason County 49 kmKing County 58 kmIsland County 66 kmPierce County 67 kmThurston County 73 kmJefferson County 74 kmSnohomish County 82 kmGrays Harbor County 105 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
12:20 pm PDT on 3 May 2017 ()
Where
in Enetai, WA · earthquakes near Enetai
Magnitude
M 3.3 (ml)
Depth
27 km below the surface
Felt
230 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Kitsap County, 9 km NNW
Nearest mapped fault
Seattle fault, 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 2690 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 45 km (28 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: Enetai in town, intensity II · Bremerton 2 km, intensity II · Silverdale 11 km, intensity II · Poulsbo 19 km, intensity II · Seattle 20 km, intensity II · Burien 22 km, intensity II · SeaTac 27 km, intensity II · Des Moines 28 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 120,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,800× the energy of this one
  4. This earthquake M 3.3 about 1.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.9× more

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 4.1 on 2017-02-23 — about 15 times the energy of this one.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 The 2001 Nisqually, Washington Earthquake · 48 km SSW of this epicentre
  2. 6.7 1 km ENE of Dash Point, Washington · 31 km SSE of this epicentre
  3. 6.1 Puget Sound region, Washington · 22 km SSW of this epicentre
  4. 5.8 Puget Sound area, Washington · 39 km SW of this epicentre
  5. 5.3 Eastern Olympic Peninsula, Washington · 39 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 47.5693, -122.5995. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kitsap County, WA 9 km (5 mi) NNW earthquakes near Kitsap County
Mason County, WA 49 km (31 mi) WSW earthquakes near Mason County
King County, WA 58 km (36 mi) E earthquakes near King County
Island County, WA 66 km (41 mi) N earthquakes near Island County
Pierce County, WA 67 km (41 mi) SSE earthquakes near Pierce County
Thurston County, WA 73 km (45 mi) SSW earthquakes near Thurston County

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

Aftershocks so far

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

  1. 2.0 7 km NE of Brinnon, Washington
  2. 1.6 0 km NNE of Mercer Island, Washington
  3. 1.8 1 km SSE of Mercer Island, Washington
  4. 1.7 10 km NNW of Belfair, Washington
  5. 3.7 2 km NNW of Quilcene, Washington
  6. 1.6 5 km N of Seattle, Washington
  7. 1.7 5 km SSE of Suquamish, Washington
  8. 1.9 2 km ENE of Enetai, Washington
  9. 2.0 0 km NNE of Enetai, Washington
  10. 1.8 3 km SE of Cathcart, Washington
  11. 1.6 0 km SW of Enetai, Washington
  12. 1.8 0 km WNW of Enetai, Washington
  13. 1.6 5 km S of Port Ludlow, Washington
  14. 1.8 1 km SE of Enetai, Washington
  15. 2.8 1 km ESE of Enetai, 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.