Earthquake · reviewed by a seismologist
M 1.8ml
Oregon-Idaho border region
Yes. A magnitude 1.8 earthquake was recorded in the Oregon-Idaho border region, 76 km (47 mi) N of Boise City, ID, at 3:16 pm MST on 4 December 2022 (22:16 UTC), 10 km deep.
76 km (47 mi) N of Boise City, ID
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Gem County, 29 km SSW
- Nearest mapped fault
- Squaw Creek fault, 11 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 1369 days ago
Earthquake alerts for Emmett, ID
Get a notification in this browser when USGS records an earthquake near Emmett, ID. 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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 9 km (6 mi) from the epicentre. 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 710,000× the energy of this one
- Around the size people start to feel M 3.0 63× the energy of this one
- This earthquake M 1.8 about 15 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 44.2841, -116.1990. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Gem County, ID | 29 km (18 mi) | SSW | earthquakes near Gem County |
| Boise County, ID | 51 km (32 mi) | SE | earthquakes near Boise County |
| Washington County, ID | 51 km (32 mi) | WNW | earthquakes near Washington County |
| Payette County, ID | 54 km (34 mi) | SW | earthquakes near Payette County |
| Adams County, ID | 69 km (43 mi) | NNW | earthquakes near Adams County |
| Valley County, ID | 78 km (49 mi) | NE | earthquakes near Valley County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 3.5 8 km N of Smiths Ferry, Idaho
- 2.3 8 km NNW of Smiths Ferry, Idaho
- 1.9 8 km NNW of Smiths Ferry, Idaho
- 2.3 8 km NNW of Smiths Ferry, Idaho
- 2.3 7 km NNW of Smiths Ferry, Idaho
- 2.2 9 km N of Smiths Ferry, Idaho
- 1.6 7 km NNW of Smiths Ferry, Idaho
- 2.7 11 km NW of Smiths Ferry, Idaho
- 2.4 7 km NW of Smiths Ferry, Idaho
- 2.4 7 km NNW of Smiths Ferry, Idaho
- 3.0 6 km NNW of Smiths Ferry, Idaho
- 2.1 8 km NNW of Smiths Ferry, Idaho
- 2.3 10 km SW of Cascade, Idaho
- 1.7 8 km NNW of Smiths Ferry, Idaho
- 2.2 8 km NNW of Smiths Ferry, Idaho
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.