Idaho earthquakes

M5.0 earthquake 9 km NNW of Georgetown, Idaho

A magnitude 5.0 earthquake struck 9 km NNW of Georgetown, Idaho on Sun, Sep 10, 2017, 3:47 AM MDT (09:47 UTC), 10 km (6 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 5.0 (mww), moderate
Local time: Sun, Sep 10, 2017, 3:47 AM MDT
UTC: 2017-09-10 09:47:10 UTC
Depth: 9.8 km (6.1 mi), shallow
Epicenter: 42.563° N, 111.416° W
Region: Idaho
Felt reports: 72
Strongest shaking: V, moderate shaking
PAGER alert: Green
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: V, moderate shaking
Peak ground acceleration: 668.0% of gravity
Peak ground velocity: 6.4 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

72 people reported to the USGS what they felt; the strongest reported shaking was V, moderate shaking.

Estimated impact

The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.

Alert level: Green: little or no damage or loss of life expected

Deaths: estimated chance of each range
Range	Chance
Under 1	65%
1 to 10	30%
10 to 100	4%
100 to 1,000	Under 1%
1,000 to 10,000	Under 1%
10,000 to 100,000	Under 1%
100,000 to 10,000,000	Under 1%

Economic losses: estimated chance of each range
Range, million USD	Chance
Under 1	65%
1 to 10	30%
10 to 100	4%
100 to 1,000	Under 1%
1,000 to 10,000	Under 1%
10,000 to 100,000	Under 1%
100,000 to 10,000,000	Under 1%

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Oblique normal
Moment magnitude: 5.0 Mww
Nodal plane 1: Strike 224°, dip 49°, rake -50°
Nodal plane 2: Strike 352°, dip 55°, rake -127°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 1.5 km horizontally, 5.0 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 24°
Stations used: 117

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.0 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

Earthquakes today Idaho earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000aj9i (also filed as uu60240742, iscgem610967316). Read Wed, Sep 23, 2026, 12:52 AM UTC.