Utah earthquakes

M1.6 earthquake 10 km SW of Thatcher, Utah

A magnitude 1.6 earthquake struck 10 km SW of Thatcher, Utah on Sun, Sep 2, 1984, 7:21 PM MDT (01:21 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M2.6 7 km WNW of Magna, Utah. This one was a foreshock.

Thatcher forecastMore in Utah

Map

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

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The earthquake

Magnitude
1.6 (md), micro
Local time
UTC
1984-09-03 01:21:01 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
41.623° N, 112.368° W
Region
Utah
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.9 km horizontally, 1.6 km in depth
Depth from
From location
Station coverage gap
104°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.67 km WNW of Magna, Utah · 15357 days ago · 4 km deep · 99 km away
  2. 2.822 km SSW of Snowville, Utah · 15351 days ago · 7 km deep · 41 km away
  3. 1.613 km E of Snowville, Utah · 15351 days ago · 0 km deep · 39 km away
  4. 1.813 km E of Snowville, Utah · 15350 days ago · 1 km deep · 39 km away
  5. 1.88 km ENE of Snowville, Utah · 15345 days ago · 2 km deep · 46 km away
  6. 2.58 km E of Howell, Utah · 15344 days ago · 3 km deep · 21 km away
  7. 1.79 km S of Malad City, Idaho · 15341 days ago · 1 km deep · 55 km away
  8. 2.426 km WSW of Corinne, Utah · 15332 days ago · 2 km deep · 19 km away
  9. 2.317 km ENE of Snowville, Utah · 15327 days ago · 8 km deep · 44 km away
  10. 1.74 km ENE of Howell, Utah · 15323 days ago · 4 km deep · 21 km away
  11. 1.64 km SE of Snowville, Utah · 15323 days ago · 1 km deep · 43 km away
  12. 1.616 km N of Howell, Utah · 15319 days ago · 1 km deep · 36 km away
  13. 3.43 km ENE of Howell, Utah · 15317 days ago · 6 km deep · 21 km away
  14. 2.44 km E of Howell, Utah · 15317 days ago · 3 km deep · 20 km away
  15. 1.712 km ESE of Snowville, Utah · 15316 days ago · 0 km deep · 36 km away
  16. 1.83 km ENE of Howell, Utah · 15316 days ago · 0 km deep · 21 km away
  17. 1.64 km NE of Howell, Utah · 15302 days ago · -3 km deep · 22 km away

Before

  1. 1.712 km WSW of Laketown, Utah · 15363 days ago · 0 km deep · 77 km away
  2. 1.54 km E of Deweyville, Utah · 15369 days ago · 2 km deep · 29 km away
  3. 1.724 km NE of Preston, Idaho · 15380 days ago · 9 km deep · 91 km away
  4. 1.64 km ESE of Honeyville, Utah · 15382 days ago · -3 km deep · 28 km away
  5. 2.55 km E of Honeyville, Utah · 15384 days ago · -3 km deep · 29 km away
  6. 2.69 km NE of Howell, Utah · 15387 days ago · 0 km deep · 28 km away
  7. 2.116 km N of Howell, Utah · 15389 days ago · 4 km deep · 37 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50015670. Read Tue, Sep 22, 2026, 8:43 PM UTC.