Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Raleigh Hills, OR
USGS: 1 km SW of Raleigh Hills, Oregon
13 km (8 mi) SW of Portland, OR · in Beaverton, OR
- When
- 4:27 am PDT on 11 October 2017 ()
- Where
- in Raleigh Hills, OR · earthquakes near Raleigh Hills
- Magnitude
- M 1.7 (ml)
- Depth
- 26 km below the surface
- Felt
- no reports yet
- Nearest
- Washington County, 26 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3277 days ago
A magnitude 1.7 earthquake was recorded in Raleigh Hills, OR, at 4:27 am PDT on 11 October 2017 (11:27 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Garden Home-Whitford, Beaverton, Metzger, Cedar Hills, Tigard, West Haven-Sylvan.
How big was it?
This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 95× the energy of this one
- This earthquake M 1.7 about 10 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.
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 2 earthquakes of M5 or more within 50 km:
- 5.2 5 km E of Bridgeton, Oregon · 20 km NE of this epicentre
- 5.0 3 km SW of Portland, Oregon · 7 km ENE 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 45.4710, -122.7817. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Washington County, OR | 26 km (16 mi) | WNW | earthquakes near Washington County |
| Multnomah County, OR | 30 km (18 mi) | ENE | earthquakes near Multnomah County |
| Clark County, WA | 41 km (25 mi) | NE | earthquakes near Clark County |
| Yamhill County, OR | 49 km (30 mi) | WSW | earthquakes near Yamhill County |
| Columbia County, OR | 57 km (36 mi) | NNW | earthquakes near Columbia County |
| Clackamas County, OR | 57 km (36 mi) | SE | earthquakes near Clackamas County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
50 earthquakes have been recorded within 50 km since this one.
- 1.5 4 km W of Mulino, Oregon
- 1.7 8 km SE of Molalla, Oregon
- 1.7 11 km WNW of Warren, Oregon
- 1.6 4 km SSW of Sandy, Oregon
- 2.0 8 km S of Scappoose, Oregon
- 1.5 2 km NNW of Venersborg, Washington
- 1.6 1 km NNW of Walnut Grove, Washington
- 1.6 7 km S of Dayton, Oregon
- 1.8 3 km NNW of Mill Plain, Washington
- 1.6 0 km WSW of Aloha, Oregon
- 1.7 4 km WSW of Yacolt, Washington
- 1.6 7 km SSE of Molalla, Oregon
- 1.6 1 km N of West Haven, Oregon
- 2.0 7 km SE of Molalla, Oregon
- 1.6 1 km WSW of West Slope, 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.