QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Bonners Ferry, ID

No earthquake was likely felt in Bonners Ferry in the 24 hours to 10:38 pm PST (06:38 UTC). The last one was M 1.9, 14 km (9 mi) WNW, at 6:59 pm PST on 13 November 2018, estimated intensity II (weak) in town. Every earthquake near Bonners Ferry

This page: a magnitude 1.9 earthquake was recorded 18 km (11 mi) northwest of Bonners Ferry, ID, at 10:05 pm PDT on 10 September 2023 (05:05 UTC), 4.4 km deep.

USGS: 17 km NW of Bonners Ferry, Idaho

10:05 pm PDT, Sep 10, 2023 · · 4.4 km deep · released about 21 lb of TNT

10 km30 km60 km120 km N Boundary County 3 kmBonner County 53 kmPend Oreille County 60 kmLincoln County 81 kmStevens County 109 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
10:05 pm PDT on 10 September 2023 ()
Where
18 km (11 mi) northwest of Bonners Ferry, ID · earthquakes near Bonners Ferry
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.9 (ml)
Depth
4.4 km below the surface
Felt
no reports yet
Nearest
Boundary County, 3 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1154 days ago

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 14 km (9 mi) from the epicentre. In Bonners Ferry, 18 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.

How big was it?

This earthquake released about 21 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.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 48.7953, -116.5020. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Boundary County, ID 3 km (2 mi) SW earthquakes near Boundary County
Bonner County, ID 53 km (33 mi) S earthquakes near Bonner County
Pend Oreille County, WA 60 km (38 mi) WSW earthquakes near Pend Oreille County
Lincoln County, MT 81 km (50 mi) ESE earthquakes near Lincoln County
Stevens County, WA 109 km (68 mi) WSW earthquakes near Stevens County
Sanders County, MT 151 km (94 mi) SE earthquakes near Sanders County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

13 earthquakes have been recorded within 50 km since this one.

  1. 1.5 36 km E of Metaline Falls, Washington
  2. 2.1 12 km NNW of Kootenai, Idaho
  3. 1.6 11 km NNW of Kootenai, Idaho
  4. 1.6 18 km N of Kootenai, Idaho
  5. 2.2 8 km NW of Ponderay, Idaho
  6. 1.8 9 km NNW of Ponderay, Idaho
  7. 2.3 15 km N of Kootenai, Idaho
  8. 1.7 11 km N of Kootenai, Idaho
  9. 2.7 19 km NNE of Kootenai, Idaho
  10. 1.8 15 km NW of Ponderay, Idaho
  11. 1.8 18 km N of Kootenai, Idaho
  12. 2.0 8 km NNW of Kootenai, Idaho
  13. 1.6 9 km NNW of Ponderay, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.