Earthquake · reviewed by a seismologist
M 3.1ml
Earthquake near Darrington, WA
No earthquake was likely felt in Darrington in the 24 hours to 6:44 am PST (14:44 UTC). The last one was M 3.8, 74 km (46 mi) W, at 11:35 pm PDT on 1 July 2026, estimated intensity II (weak) in town; 2,030 felt reports to USGS. Every earthquake near Darrington
This page: a magnitude 3.1 earthquake was recorded 42 km (26 mi) north-northeast of Darrington, WA, at 9:35 am PDT on 3 July 2017 (16:35 UTC), less than 1 km deep. 24 people have reported feeling it to USGS.
USGS: 9 km NE of Marblemount, Washington
- When
- 9:35 am PDT on 3 July 2017 ()
- Where
- 42 km (26 mi) north-northeast of Darrington, WA · earthquakes near Darrington
- Magnitude
- M 3.1 (ml)
- Depth
- -1.1 km below the surface
- Felt
- 24 reports · strongest reported intensity IV
- Measured shaking
- intensity III (ShakeMap)
- Nearest
- Skagit County, 35 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3186 days ago
Earthquake alerts for Darrington, WA
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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 41 km (25 mi) from the epicentre. In Darrington, 42 km away, the estimate is intensity II (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.
How big was it?
This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 260,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
- Magna, Utah 2020 M 5.7 8,200× the energy of this one
- This earthquake M 3.1 about 1,300 lb of TNT
- Around the size people start to feel M 3.0 this one released 1.4× 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.6 Near Marblemount, Washington · 11 km SSW 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 48.5967, -121.3695. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Skagit County, WA | 35 km (22 mi) | WSW | earthquakes near Skagit County |
| Whatcom County, WA | 44 km (27 mi) | NW | earthquakes near Whatcom County |
| Snohomish County, WA | 67 km (42 mi) | SSW | earthquakes near Snohomish County |
| Chelan County, WA | 99 km (61 mi) | SE | earthquakes near Chelan County |
| Island County, WA | 108 km (67 mi) | WSW | earthquakes near Island County |
| Okanogan County, WA | 120 km (74 mi) | E | earthquakes near Okanogan County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 3.0 5 km ENE of Oso, Washington
- 2.1 54 km NE of Marblemount, Washington
- 3.2 55 km NE of Marblemount, Washington
- 2.2 7 km ENE of Oso, Washington
- 1.8 5 km ENE of Oso, Washington
- 3.4 6 km ENE of Oso, Washington
- 2.9 7 km NE of Darrington, Washington
- 1.9 20 km E of Darrington, Washington
- 2.0 4 km SE of Swede Heaven, Washington
- 1.6 43 km NE of Marblemount, Washington
- 1.9 42 km NE of Marblemount, Washington
- 1.6 42 km NE of Marblemount, Washington
- 1.8 41 km NE of Marblemount, Washington
- 1.6 Washington
- 1.9 48 km NNE of Marblemount, 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.