explosion · reviewed by a seismologist
M 1.9ml
Earthquake near Mount Hood Village, OR
USGS: 5 km NNW of Mount Hood Village, Oregon
53 km (33 mi) ESE of Portland, OR · 37 km (23 mi) ESE of Gresham, OR
- When
- 3:56 pm PDT on 12 July 2018 ()
- Where
- 5 km (3 mi) NNW of Mount Hood Village, OR · earthquakes near Mount Hood Village
- Magnitude
- M 1.9 (ml)
- Depth
- -1.4 km below the surface
- Felt
- no reports yet
- Nearest
- Hood River County, 29 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3003 days ago
A magnitude 1.9 earthquake was recorded 5 km (3 mi) NNW of Mount Hood Village, OR, at 3:56 pm PDT on 12 July 2018 (22:56 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Sandy, Estacada.
USGS catalogues this as explosion, not an earthquake.
How big was it?
This earthquake released about 18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 840,000× the energy of this one
- Magna, Utah 2020 M 5.7 600,000× the energy of this one
- Around the size people start to feel M 3.0 53× the energy of this one
- This earthquake M 1.9 about 18 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 since 1900 lists no earthquake of M5 or more within 50 km.
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 45.4027, -121.9952. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Hood River County, OR | 29 km (18 mi) | ENE | earthquakes near Hood River County |
| Clackamas County, OR | 31 km (19 mi) | SSW | earthquakes near Clackamas County |
| Multnomah County, OR | 37 km (23 mi) | WNW | earthquakes near Multnomah County |
| Clark County, WA | 56 km (35 mi) | NW | earthquakes near Clark County |
| Skamania County, WA | 69 km (43 mi) | N | earthquakes near Skamania County |
| Wasco County, OR | 70 km (44 mi) | ESE | earthquakes near Wasco 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.
- 1.6 16 km ESE of Yacolt, Washington
- 1.6 3 km NNW of Mount Hood Village, Oregon
- 1.6 3 km ENE of Government Camp, Oregon
- 1.6 3 km NNE of Government Camp, Oregon
- 1.6 3 km NNE of Government Camp, Oregon
- 1.8 3 km NNE of Government Camp, Oregon
- 1.5 2 km ENE of Government Camp, Oregon
- 2.0 2 km ENE of Government Camp, Oregon
- 2.1 2 km ENE of Government Camp, Oregon
- 2.0 2 km NE of Government Camp, Oregon
- 1.6 2 km ENE of Government Camp, Oregon
- 2.0 2 km NE of Government Camp, Oregon
- 1.5 3 km NE of Government Camp, Oregon
- 1.6 2 km ENE of Government Camp, Oregon
- 1.6 2 km ENE of Government Camp, 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.