Earthquake · reviewed by a seismologist
M 3.1ml
Earthquake near Silverton, OR
No earthquake was likely felt in Silverton in the 24 hours to 6:07 pm PST (02:07 UTC). The last one was M 1.6, 8 km (5 mi) E, at 1:33 pm PDT on 22 October 2026, estimated intensity II (weak) in town. Every earthquake near Silverton
This page: a magnitude 3.1 earthquake was recorded 7 km (4 mi) south-southeast of Silverton, OR, at 8:45 pm PDT on 14 April 2018 (03:45 UTC), 18 km deep. 240 people have reported feeling it to USGS.
USGS: 6 km SSE of Silverton, Oregon
66 km (41 mi) S of Portland, OR · 21 km (13 mi) E of Salem, OR
- When
- 8:45 pm PDT on 14 April 2018 ()
- Where
- 7 km (4 mi) south-southeast of Silverton, OR · earthquakes near Silverton
- Magnitude
- M 3.1 (ml)
- Depth
- 18 km below the surface
- Felt
- 240 reports · strongest reported intensity III
- Nearest
- Marion County, 15 km ESE
- Nearest mapped fault
- Mount Angel fault, 9 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 2808 days ago
Earthquake alerts for Silverton, OR
Get a notification in this browser when USGS records an earthquake near Silverton, OR. 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 36 km (22 mi) from the epicentre. In Silverton, 7 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.
Earthquakes near other towns within 30 km: Sublimity, Mount Angel, Aumsville, Stayton, Four Corners, Hayesville.
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 6.7 270,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
- Magna, Utah 2020 M 5.7 8,500× 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 1.3× 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 4 km E of Scotts Mills, Oregon · 15 km NE 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 44.9455, -122.7558. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Marion County, OR | 15 km (9 mi) | ESE | earthquakes near Marion County |
| Clackamas County, OR | 50 km (31 mi) | ENE | earthquakes near Clackamas County |
| Polk County, OR | 51 km (32 mi) | W | earthquakes near Polk County |
| Linn County, OR | 54 km (33 mi) | SSE | earthquakes near Linn County |
| Yamhill County, OR | 55 km (34 mi) | NW | earthquakes near Yamhill County |
| Multnomah County, OR | 72 km (45 mi) | NNE | earthquakes near Multnomah County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 2.0 4 km E of Scotts Mills, Oregon
- 2.2 3 km W of Mehama, Oregon
- 1.8 Washington-Oregon border region
- 1.6 7 km E of Molalla, Oregon
- 1.6 2 km E of Sherwood, Oregon
- 1.9 5 km SE of Silverton, Oregon
- 1.8 9 km ESE of Scotts Mills, OR
- 1.7 6 km SSE of Lacomb, Oregon
- 1.9 3 km WSW of Dundee, Oregon
- 1.6 10 km NNW of Adair Village, Oregon
- 1.6 4 km N of Waterloo, Oregon
- 1.8 8 km SE of Molalla, Oregon
- 2.0 3 km W of Mehama, Oregon
- 2.4 3 km WNW of Molalla, Oregon
- 2.6 6 km ESE of Scotts Mills, Oregon
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.