QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

Earthquake near Coeur d'Alene, ID

No earthquake was likely felt in Coeur d'Alene in the 24 hours to 9:00 pm PST (05:00 UTC). The last one was M 6.5, 380 km (236 mi) SSE, at 4:52 pm PDT on 31 March 2020, estimated intensity II (weak) in town; 23,163 felt reports to USGS. Every earthquake near Coeur d'Alene

No: USGS classifies this as a explosion, not an earthquake. A magnitude 1.6 explosion was recorded 32 km (20 mi) south-southeast of Coeur d'Alene, ID, at 10:52 am PDT on 6 September 2024 (17:52 UTC), less than 1 km deep.

USGS: 9 km NNE of Parkline, Idaho

67 km (41 mi) ESE of Spokane, WA · 35 km (21 mi) SSE of Coeur d'Alene, ID

10:52 am PDT, Sep 6, 2024 · · -0.8 km deep · released about 6.4 lb of TNT

10 km30 km60 km120 km N Benewah County 22 kmKootenai County 30 kmShoshone County 56 kmSpokane County 63 kmLatah County 67 kmWhitman County 89 kmBonner County 101 kmClearwater County 111 kmSanders County 115 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
10:52 am PDT on 6 September 2024 ()
Where
32 km (20 mi) south-southeast of Coeur d'Alene, ID · earthquakes near Coeur d'Alene
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.6 (ml)
Depth
-0.8 km below the surface
Felt
no reports yet
Nearest
Benewah County, 22 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 768 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 11 km (7 mi) from the epicentre. In Coeur d'Alene, 32 km away, the estimate is intensity I (not felt). 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: Saint Maries, Plummer.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 47.4135, -116.6282. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Benewah County, ID 22 km (13 mi) S earthquakes near Benewah County
Kootenai County, ID 30 km (18 mi) N earthquakes near Kootenai County
Shoshone County, ID 56 km (35 mi) E earthquakes near Shoshone County
Spokane County, WA 63 km (39 mi) WNW earthquakes near Spokane County
Latah County, ID 67 km (41 mi) S earthquakes near Latah County
Whitman County, WA 89 km (55 mi) SW earthquakes near Whitman County

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

Aftershocks so far

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

  1. 2.1 4 km E of Plummer, Idaho
  2. 1.8 5 km WNW of Rockford Bay, Idaho
  3. 2.1 4 km NW of Rockford Bay, Idaho
  4. 1.8 7 km SSW of Tekoa, Washington
  5. 1.6 7 km SSE of Saint Maries, Idaho
  6. 1.6 3 km ESE of Veradale, Washington
  7. 1.7 4 km SSW of Liberty Lake, Washington
  8. 1.6 13 km SSE of Liberty Lake, Washington
  9. 2.0 3 km N of Harrison, Idaho
  10. 2.1 10 km SSW of Saint Maries, Idaho
  11. 1.9 4 km SSE of Saint Maries, Idaho
  12. 2.0 4 km E of Plummer, 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.