Earthquake · reviewed by a seismologist
M 3.7ml
Earthquake near Lofall, WA
Yes: an earthquake was likely felt in Lofall in the last 24 hours. M 1.8, 8 km (5 mi) NNW of Lofall, at 12:24 pm PST on 12 November 2026 (20:24 UTC); the estimated shaking in Lofall was intensity II (weak). Every earthquake near Lofall
This page: a magnitude 3.7 earthquake was recorded 8 km (5 mi) west-northwest of Lofall, WA, at 1:08 am PDT on 8 September 2022 (08:08 UTC), 23 km deep. 3,428 people have reported feeling it to USGS.
USGS: 7 km WNW of Lofall, Washington
39 km (24 mi) NW of Seattle, WA · 32 km (20 mi) WNW of Shoreline, WA
- When
- 1:08 am PDT on 8 September 2022 ()
- Where
- 8 km (5 mi) west-northwest of Lofall, WA · earthquakes near Lofall
- Magnitude
- M 3.7 (ml)
- Depth
- 23 km below the surface
- Felt
- 3,428 reports · strongest reported intensity IV
- Measured shaking
- intensity III (ShakeMap)
- Nearest
- Kitsap County, 24 km SSE
- Nearest mapped fault
- Southern Whidbey Island fault, 21 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 330 days ago
Earthquake alerts for Lofall, WA
Get a notification in this browser when USGS records an earthquake near Lofall, WA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 73 km (45 mi) from the epicentre. In Lofall, 8 km away, the estimate is intensity III (weak). 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: Poulsbo 14 km, intensity III · Silverdale 22 km, intensity III · Edmonds 28 km, intensity II · Port Townsend 31 km, intensity II · Enetai 31 km, intensity II · Bremerton 32 km, intensity II · Shoreline 32 km, intensity II · Lynnwood 33 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 5.5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 31,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
- Magna, Utah 2020 M 5.7 970× the energy of this one
- This earthquake M 3.7 about 5.5 tons of TNT
- Around the size people start to feel M 3.0 this one released 12× 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 3.7 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 6.1 Puget Sound region, Washington · 49 km S of this epicentre
- 5.3 Eastern Olympic Peninsula, Washington · 19 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 47.8420, -122.7517. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kitsap County, WA | 24 km (15 mi) | SSE | earthquakes near Kitsap County |
| Island County, WA | 36 km (22 mi) | N | earthquakes near Island County |
| Jefferson County, WA | 58 km (36 mi) | W | earthquakes near Jefferson County |
| Mason County, WA | 63 km (39 mi) | SSW | earthquakes near Mason County |
| Snohomish County, WA | 77 km (48 mi) | ENE | earthquakes near Snohomish County |
| San Juan County, WA | 78 km (49 mi) | NNW | earthquakes near San Juan County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.6 3 km W of Belfair, Washington
- 1.6 3 km SSE of Quilcene, Washington
- 1.7 5 km SW of Port Ludlow, Washington
- 2.0 3 km N of White Center, Washington
- 1.6 3 km NW of Wauna, Washington
- 1.7 1 km NNW of River Road, Washington
- 2.3 6 km WSW of Shoreline, Washington
- 1.6 4 km W of Bainbridge Island, Washington
- 1.6 2 km NE of Esperance, Washington
- 1.6 3 km SSE of Quilcene, Washington
- 1.7 4 km NNW of White Center, Washington
- 1.7 2 km SSW of Gorst, Washington
- 1.5 5 km SW of Port Ludlow, Washington
- 1.9 2 km SSW of Esperance, Washington
- 1.8 1 km W of Suquamish, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.