M1.7 earthquake 40 km NNE of Spencer, Idaho

Magnitude

1.7 (ML, local (Richter)), micro

Magnitude from

Montana Bureau of Mines and Geology

Local time

Thu, Dec 14, 2017, 8:22 PM MST

UTC

2017-12-15 03:22:03 UTC

Depth

6.8 km (4.2 mi), shallow

Epicenter

44.688° N, 111.955° W

Region

Idaho

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 2.9 km in depth

Magnitude uncertainty

±0.04

Depth from

From location

Station coverage gap

117°

Stations used

19

• Dubois, IdahoPopulation 606. Forecast61 kmNNE
• Rexburg, IdahoPopulation 27,663. Forecast97 kmN
• Billings, MontanaPopulation 117,116. Forecast297 kmWSW
• Calgary, CanadaPopulation 1,306,784. Forecast725 kmSSE

After

1. 2.224 km NNE of Lima, MontanaThu, Dec 21, 8:41 AM MST · 3207 days ago · 1 km deep · 47 km away
2. 2.143 km NE of Spencer, IdahoTue, Dec 26, 8:49 AM MST · 3202 days ago · 10 km deep · 6 km away
3. 1.8Idaho-Montana border regionThu, Dec 28, 8:11 AM MST · 3200 days ago · 9 km deep · 73 km away
4. 2.018 km N of Dillon, MontanaMon, Jan 1, 5:26 PM MST · 3195 days ago · 6 km deep · 92 km away
5. 1.58 km NW of Ennis, MontanaTue, Jan 2, 7:15 AM MST · 3195 days ago · 3 km deep · 80 km away
6. 2.121 km NE of West Yellowstone, MontanaThu, Jan 4, 11:45 PM MST · 3192 days ago · 5 km deep · 84 km away
7. 2.19 km SSE of Lima, MontanaWed, Jan 10, 7:41 PM MST · 3186 days ago · 8 km deep · 50 km away
8. 2.237 km SSE of Virginia City, MontanaSat, Jan 13, 5:17 AM MST · 3184 days ago · 5 km deep · 36 km away
9. 1.834 km SSE of Virginia City, MontanaSat, Jan 13, 7:01 AM MST · 3184 days ago · 7 km deep · 37 km away
10. 1.530 km NNE of Spencer, IdahoSat, Jan 20, 12:08 AM MST · 3177 days ago · 10 km deep · 14 km away
11. 2.316 km NNE of Dillon, MontanaTue, Jan 23, 9:27 AM MST · 3173 days ago · 8 km deep · 89 km away
12. 1.624 km SSE of West Yellowstone, MontanaThu, Jan 25, 12:26 PM MST · 3171 days ago · 4 km deep · 80 km away
13. 2.225 km SSE of West Yellowstone, MontanaFri, Jan 26, 8:26 AM MST · 3171 days ago · 4 km deep · 80 km away
14. 2.09 km ENE of Hebgen Lake Estates, MontanaThu, Feb 1, 7:00 AM MST · 3165 days ago · 7 km deep · 71 km away
15. 1.624 km ENE of West Yellowstone, MontanaSat, Feb 3, 2:37 AM MST · 3163 days ago · 8 km deep · 91 km away
16. 1.615 km NE of West Yellowstone, MontanaFri, Feb 9, 8:13 AM MST · 3157 days ago · 5 km deep · 78 km away
17. 1.612 km NE of West Yellowstone, MontanaSat, Feb 10, 4:36 PM MST · 3155 days ago · 8 km deep · 75 km away

Before

1. 1.9Idaho-Montana border regionWed, Dec 13, 2:12 AM MST · 3215 days ago · 8 km deep · 74 km away
2. 1.613 km E of Hebgen Lake Estates, MontanaWed, Dec 6, 7:12 PM MST · 3221 days ago · 8 km deep · 75 km away
3. 1.911 km SW of West Yellowstone, MontanaTue, Dec 5, 3:24 PM MST · 3222 days ago · 14 km deep · 59 km away
4. 1.525 km SSW of Mammoth, WyomingTue, Dec 5, 3:15 AM MST · 3223 days ago · 4 km deep · 92 km away
5. 2.27 km SW of Hebgen Lake Estates, MontanaTue, Dec 5, 3:08 AM MST · 3223 days ago · 15 km deep · 55 km away
6. 1.725 km SSW of Mammoth, WyomingTue, Dec 5, 3:03 AM MST · 3223 days ago · 5 km deep · 91 km away
7. 2.033 km N of Spencer, IdahoSun, Dec 3, 10:30 PM MST · 3224 days ago · 7 km deep · 17 km away
8. 2.442 km NNE of Spencer, IdahoWed, Nov 29, 11:13 PM MST · 3228 days ago · 6 km deep · 2 km away
9. 2.019 km W of Hebgen Lake Estates, MontanaSun, Nov 26, 1:32 PM MST · 3231 days ago · 14 km deep · 42 km away
10. 2.25 km NNE of Lima, MontanaSun, Nov 19, 12:52 AM MST · 3239 days ago · 10 km deep · 47 km away
11. 1.611 km E of Hebgen Lake Estates, MontanaFri, Nov 17, 3:02 AM MST · 3241 days ago · 9 km deep · 72 km away
12. 1.641 km NNE of Spencer, IdahoWed, Nov 15, 5:58 AM MST · 3243 days ago · 13 km deep · 2 km away

From the USGS Earthquake Hazards Program and its partner networks, event mb80274244. Read Fri, Oct 2, 2026, 3:34 AM UTC.