Earthquake · reviewed by a seismologist
M 2.5ml
8 km W of West Longview, WA
Yes. A magnitude 2.5 earthquake was recorded 8 km W of West Longview, WA, 78 km (49 mi) NNW of Portland, OR, at 5:27 pm PDT on 8 July 2017 (00:27 UTC), 23 km deep.
78 km (49 mi) NNW of Portland, OR
- When
- Magnitude
- M 2.5 (ml)
- Depth
- 23 km below the surface
- Felt
- no reports yet
- Nearest
- Columbia County, 25 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3324 days ago
Earthquake alerts for West Longview, WA
Get a notification in this browser when USGS records an earthquake near West Longview, 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 it was probably too small to be felt, even directly above it. 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: West Longview, Clatskanie, Longview Heights, Longview, West Side Highway, Kelso.
How big was it?
This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 86,000× the energy of this one
- Magna, Utah 2020 M 5.7 61,000× the energy of this one
- Around the size people start to feel M 3.0 5.4× the energy of this one
- This earthquake M 2.5 about 180 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.
Where
Epicentre 46.1635, -123.1088. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Columbia County, OR | 25 km (15 mi) | S | earthquakes near Columbia County |
| Wahkiakum County, WA | 28 km (18 mi) | WNW | earthquakes near Wahkiakum County |
| Cowlitz County, WA | 33 km (21 mi) | E | earthquakes near Cowlitz County |
| Clatsop County, OR | 49 km (30 mi) | WSW | earthquakes near Clatsop County |
| Clark County, WA | 65 km (40 mi) | SE | earthquakes near Clark County |
| Pacific County, WA | 68 km (42 mi) | NW | earthquakes near Pacific County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 1.9 6 km NNW of West Longview, Washington
- 1.7 11 km WNW of Warren, Oregon
- 1.6 20 km NE of Kalama, Washington
- 1.8 2 km SSW of Cathlamet, Washington
- 1.6 8 km E of Kalama, Washington
- 1.6 15 km SW of Ryderwood, Washington
- 1.7 3 km WSW of Cathlamet, Washington
- 1.8 18 km ESE of Castle Rock, Washington
- 1.8 8 km NNW of West Longview, Washington
- 1.7 5 km WNW of Deer Island, Oregon
- 1.5 14 km NW of West Longview, Washington
- 2.0 12 km NW of West Longview, Washington
- 2.4 11 km S of Westport, Oregon
- 2.1 6 km NW of West Longview, Washington
- 1.8 11 km NNE of Skamokawa Valley, 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.