Idaho Geological Survey

Idaho Geological Survey The Idaho Geological Survey is a public service and research agency at the University of Idaho.

Here is your seismic activity report for May 2026. 20 events were recorded in the USGS Comprehensive Catalog. A few smal...
06/01/2026

Here is your seismic activity report for May 2026. 20 events were recorded in the USGS Comprehensive Catalog. A few small events occurred in north Idaho, near Moscow and Athol - these are attributed to explosions related to mining or construction.

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IDAHO MONTHLY SEISMIC ACTIVITY REPORT
Period: 2026-05-01 to 2026-05-31
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SUMMARY STATISTICS
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Total earthquakes detected: 20
Magnitude range: 1.0 - 3.8
Average magnitude: 1.97
Median magnitude: 1.94
Depth range: -3.4 km - 11.2 km
Average depth: 1.9 km

MAGNITUDE DISTRIBUTION
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Micro (< 2.0): 11
Minor (2.0-2.9): 8
Light (3.0-3.9): 1

SIGNIFICANT EVENTS (Magnitude >= 3.0)
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M3.8 - 2026-05-15 05:05:45 UTC
Location: 8 km W of Bennington, Idaho
Depth: 1.4 km

MOST ACTIVE AREAS
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8 km W of Bennington, Idaho: 2 event(s)
26 km S of Lima, Montana: 1 event(s)
46 km SSW of Lima, Montana: 1 event(s)
24 km S of Clayton, Idaho: 1 event(s)
22 km N of Spencer, Idaho: 1 event(s)

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Data source: USGS Earthquake Hazards Program
https://earthquake.usgs.gov/
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Little seismic activity late last night close to Challis. Two small tremors less than an hour apart.... Did you feel the...
05/20/2026

Little seismic activity late last night close to Challis. Two small tremors less than an hour apart.... Did you feel them?

Here are two recent seismic activities IN SE Idaho, one on Friday (3.8 ) and one today (2.9). Did you feel them?
05/18/2026

Here are two recent seismic activities IN SE Idaho, one on Friday (3.8 ) and one today (2.9). Did you feel them?

The Idaho Geological Survey hosted a delegation from Kazakhstan, including visitors from their geological survey, in the...
05/11/2026

The Idaho Geological Survey hosted a delegation from Kazakhstan, including visitors from their geological survey, in the IGS Boise Office. Topics of mutual interest included funding, Survey programs, and mining and critical minerals. Dr. Gillerman (middle) provided an economic geology perspective and State Geologist, Dr. Claudio Berti, joined in by Zoom for the lively discussion on what we do for Idaho. It was fun!

Annnnd we're back. After a few-month delay due to operational changes, Idaho earthquakes are again being reported to the...
04/30/2026

Annnnd we're back. After a few-month delay due to operational changes, Idaho earthquakes are again being reported to the USGS comprehensive catalog. Very big thanks to the Montana Bureau of Mines and Geology for continuing to locate and report earthquake events.

IDAHO MONTHLY SEISMIC ACTIVITY REPORT
Period: 2026-04-01 to 2026-04-30
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SUMMARY STATISTICS
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Total earthquakes detected: 26
Magnitude range: 0.3 - 3.4
Average magnitude: 1.93
Median magnitude: 1.87
Depth range: 0.1 km - 18.8 km
Average depth: 5.7 km

MAGNITUDE DISTRIBUTION
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Micro (< 2.0): 14
Minor (2.0-2.9): 11
Light (3.0-3.9): 1

SIGNIFICANT EVENTS (Magnitude >= 3.0)
----------------------------------------------------------------------
M3.4 - 2026-04-12 09:01:23 UTC
Location: 14 km W of Fairview, Wyoming
Depth: 10.0 km

MOST ACTIVE AREAS
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21 km NW of Stanley, Idaho: 2 event(s)
24 km NW of Stanley, Idaho: 2 event(s)
32 km S of Lima, Montana: 1 event(s)
17 km NNW of Stanley, Idaho: 1 event(s)
22 km WNW of Stanley, Idaho: 1 event(s)

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Data source: USGS Earthquake Hazards Program
https://earthquake.usgs.gov/
=========================================

Maybe you felt this 3.4 magnitude on 4/12/26. It sure is nice to have these reported to the USGS again!!! It sure beats...
04/14/2026

Maybe you felt this 3.4 magnitude on 4/12/26. It sure is nice to have these reported to the USGS again!!! It sure beats my Co-pilot estimates!!!!!

We have had a little shaking going on this past 7 days. More importantly, they are being reported again in the USGS eart...
04/14/2026

We have had a little shaking going on this past 7 days. More importantly, they are being reported again in the USGS earthquake site!!!!

Oh no!!! My amature seismic sluething (with the help of AI) is a little off!! 2.7 Magnitude, 31 KM NW of Stanly, ID.
03/31/2026

Oh no!!! My amature seismic sluething (with the help of AI) is a little off!!
2.7 Magnitude, 31 KM NW of Stanly, ID.

Did ya feel this one at 8:51 AM Mtn time? This was centered around Claton, ID. We are waiting on the official location a...
03/31/2026

Did ya feel this one at 8:51 AM Mtn time? This was centered around Claton, ID. We are waiting on the official location and magnitude from the professional Seismologists and will report the details as soon as we have them.

IDAHO MONTHLY SEISMICITY REPORT January was another relatively quiet month for earthquakes: only 11 recorded in the USGS...
02/03/2026

IDAHO MONTHLY SEISMICITY REPORT

January was another relatively quiet month for earthquakes: only 11 recorded in the USGS Comprehensive Catalog (ComCat), well below the median of ~80 earthquakes/month we have seen over the past 5 years. The past 3 months have seen fewer than normal numbers of earthquakes. Are we seeing an actual slow down in seismic activity? Or is something else going on? In this case, it is the result of how earthquakes are located and added to the ComCat. Earthquakes, especially smaller magnitude events, must be manual "picked" from seismograms by a seismologist. Recent staffing changes have impacted the ability of some regional networks to pick and submit earthquakes.

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IDAHO MONTHLY SEISMIC ACTIVITY REPORT
Period: 2026-01-01 to 2026-01-31
=========================================

SUMMARY STATISTICS
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Total earthquakes detected: 11
Magnitude range: 1.1 - 2.6
Average magnitude: 2.11
Median magnitude: 2.24
Depth range: -2.4 km - 10.9 km
Average depth: 3.9 km

MAGNITUDE DISTRIBUTION
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Micro (< 2.0): 4
Minor (2.0-2.9): 7

MOST ACTIVE AREAS
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8 km SW of Potlatch, Idaho: 1 event(s)
15 km W of Fairview, Wyoming: 1 event(s)
2 km SSE of Lewiston Orchards, Idaho: 1 event(s)
15 km NNW of Stanley, Idaho: 1 event(s)
10 km NNW of Georgetown, Idaho: 1 event(s)

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Data source: USGS Earthquake Hazards Program
https://lnkd.in/eRCJdsz
=========================================

Address

Morrill Hall # 303
Moscow, ID
83843

Opening Hours

Monday 8am - 4:30am
Tuesday 8am - 4:30am
Wednesday 8am - 4:30am
Thursday 8am - 4:30am

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+12088857991

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