M2.7 earthquake 16 km SE of Avon, Utah

Magnitude

2.7 (md), micro

Local time

Mon, Oct 21, 1985, 5:40 AM MDT

UTC

1985-10-21 11:40:09 UTC

Depth

2.2 km (1.4 mi), shallow

Epicenter

41.434° N, 111.670° W

Region

Utah

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.2 km horizontally, 1.4 km in depth

Depth from

From location

Station coverage gap

203°, poorly surrounded by stations

Stations used

9

• Wolf Creek, UtahPopulation 1,336. Forecast17 kmNE
• North Ogden, UtahPopulation 18,446. Forecast28 kmENE
• Salt Lake City, UtahPopulation 215,548. Forecast77 kmNNE
• Phoenix, ArizonaPopulation 1,650,070. Forecast889 kmN

After

1. 1.86 km SSW of Saint Charles, IdahoMon, Nov 25, 4:04 AM MST · 14911 days ago · 21 km deep · 72 km away
2. 2.111 km WNW of Garden City, UtahMon, Nov 25, 4:31 AM MST · 14911 days ago · -1 km deep · 62 km away
3. 1.914 km E of Snowville, UtahSat, Nov 30, 3:15 AM MST · 14906 days ago · 0 km deep · 92 km away
4. 1.611 km ENE of Eden, UtahWed, Dec 4, 8:01 PM MST · 14901 days ago · 9 km deep · 10 km away

Before

1. 1.68 km NNW of Henefer, UtahThu, Oct 17, 2:29 PM MDT · 14949 days ago · 7 km deep · 40 km away
2. 1.914 km E of Snowville, UtahSat, Oct 5, 6:44 PM MDT · 14961 days ago · 1 km deep · 92 km away
3. 1.826 km SSW of Snowville, UtahThu, Oct 3, 8:30 PM MDT · 14963 days ago · 6 km deep · 99 km away
4. 2.53 km WSW of Wellsville, UtahThu, Oct 3, 1:55 PM MDT · 14963 days ago · 3 km deep · 33 km away
5. 1.713 km E of Snowville, UtahMon, Sep 30, 12:36 PM MDT · 14967 days ago · 1 km deep · 93 km away
6. 2.113 km E of Snowville, UtahSun, Sep 29, 10:43 AM MDT · 14968 days ago · 7 km deep · 92 km away
7. 1.813 km ESE of Snowville, UtahSat, Sep 28, 8:45 PM MDT · 14968 days ago · 4 km deep · 92 km away
8. 1.612 km E of Snowville, UtahSat, Sep 28, 5:55 PM MDT · 14968 days ago · -2 km deep · 93 km away
9. 1.813 km ESE of Snowville, UtahFri, Sep 27, 10:43 AM MDT · 14970 days ago · 2 km deep · 92 km away
10. 1.613 km NNW of Howell, UtahThu, Sep 26, 2:44 AM MDT · 14971 days ago · 13 km deep · 88 km away
11. 2.313 km ESE of Snowville, UtahWed, Sep 25, 3:06 AM MDT · 14972 days ago · 5 km deep · 93 km away
12. 2.08 km SW of Thatcher, UtahTue, Sep 24, 5:55 PM MDT · 14972 days ago · 4 km deep · 64 km away
13. 2.78 km W of Thatcher, UtahTue, Sep 24, 5:55 PM MDT · 14972 days ago · 6 km deep · 66 km away
14. 2.321 km WSW of Oakley, WyomingMon, Sep 23, 3:54 PM MDT · 14973 days ago · 5 km deep · 80 km away
15. 1.77 km WSW of Thatcher, UtahSun, Sep 22, 10:48 PM MDT · 14974 days ago · 1 km deep · 65 km away

From the USGS Earthquake Hazards Program and its partner networks, event uu50026270. Read Tue, Sep 22, 2026, 6:16 AM UTC.