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Earthquakes Near Me / Wyoming

Wyoming Earthquakes: Recent Quakes and the Largest on Record

Wyoming averages 43 earthquakes of magnitude 2.5 or more a year (2016 to 2025), and the largest in the USGS catalog since 1900 is the M6.5 of August 18, 1959, 14 km N of Madison Junction, Wyoming.

Live from the USGS

Earthquakes near Cheyenne in the last 30 days

Every quake within 155 miles of Cheyenne, Wyoming’s largest city, newest first. For your own address, enter a ZIP code.

Within
Magnitude
Reading the USGS earthquake catalog for magnitude 1.5 and up within 155 miles of Cheyenne.

Live from the USGS earthquake catalog. Times are Mountain time; felt reports and the shaking level come from Did You Feel It? A new quake can take a few minutes to appear and its magnitude can be revised.

Wyoming by the numbers

USGS catalog, read October 10, 2026
43
Quakes of M2.5+ a year
the average, 2016 to 2025
10th
Rank of 50 states
by quakes of M2.5+ a year
M6.5
Largest since 1900
August 18, 1959
19
M3+ in 2026
through October 10, 2026

Wyoming averages 43 earthquakes of magnitude 2.5 or more a year, counting 426 from 2016 to 2025, which ranks it 10th of the fifty states.

Since 1990

Wyoming earthquakes by year

The USGS catalog lists 485 earthquakes of magnitude 3 or more in Wyoming from 1990 to 2025, the most in 1994 (60). 2016 to 2025: 109; 2006 to 2015: 154.

Magnitude 3 and up in Wyoming, 1990 to 2025; the tallest bar is 60. From the USGS catalog, read October 10, 2026.
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Since 1900

The 10 largest earthquakes in Wyoming

The largest earthquake in Wyoming in the USGS catalog since 1900 is the M6.5 of August 18, 1959, 14 km N of Madison Junction, Wyoming. The most recent of magnitude 4 or more was the M4.2 of May 11, 2022, 36 km S of Silver Gate, Montana.

  1. 1M6.5
    14 km N of Madison Junction, WyomingAugust 18, 1959, 6.2 mi (10 km) deep
  2. 2M6.3
    22 km SW of Mammoth, WyomingAugust 18, 1959, 6.2 mi (10 km) deep
  3. 3M5.9
    26 km SSE of Mammoth, WyomingJune 30, 1975, 4.3 mi (7 km) deep
  4. 4M5.8
    4 km SSE of Auburn, WyomingFebruary 3, 1994, 4.9 mi (8 km) deep
  5. 5M5.7
    13 km SSW of Mammoth, WyomingAugust 18, 1959, 9.3 mi (15 km) deep
  6. 6M5.5
    25 km SSW of Mammoth, WyomingDecember 8, 1976, 3.1 mi (5 km) deep
  7. 7M5.3
    24 km ENE of West Yellowstone, MontanaOctober 19, 1976, 2.5 mi (4 km) deep
  8. 8M5.3
    20 km S of Mammoth, WyomingOctober 19, 1976, 3.1 mi (5 km) deep
  9. 9M5.3
    29 km W of Esterbrook, WyomingOctober 18, 1984, 21 mi (33 km) deep
  10. 10M5.1
    51 km ESE of West Yellowstone, MontanaMarch 31, 1973, 6.2 mi (10 km) deep

From the USGS ComCat catalog, every magnitude since 1900, read October 10, 2026. Each place links to the quake’s USGS page.

The faults

Fault zones in Wyoming

  • Teton fault
  • Star Valley fault
  • Grand Valley fault
  • Rock Creek fault
  • Snake River fault
“The Snake River fault extends northward from the Teton fault, with the juncture being present west of Steamboat Mountain (Love, 1974a).”

Named by the Wyoming State Geological Survey, read October 9, 2026.

When it shakes

What to do in an earthquake

  1. 1

    Drop

    Drop where you are onto hands and knees.

  2. 2

    Cover

    Cover your head and neck with one arm and hand. If a sturdy table or desk is nearby, crawl underneath it for shelter. If no shelter is nearby, crawl next to an interior wall (away from windows). Stay on your knees; bend over to protect vital organs.

  3. 3

    Hold On

    Hold until the shaking stops. If under shelter, hold on with one hand and be ready to move with it when the shelter moves. If not under shelter, hold on to your head and neck with both arms and hands.

Ready.gov’s words, from Ready.gov: Earthquakes (updated Sep 9, 2026, read October 9, 2026). Practice it with The Great ShakeOut: Earthquake Drills.

A steep grassy step in the ground running through a pine forest, the scarp of an old fault rupture
The fault scarp near Quake Lake in Montana left by the Hebgen Lake earthquake of August 17, 1959, photographed in 1997. “Fault scarp a Quake Lake 19970627”, Jstuby, CC0
Questions

Wyoming earthquake questions

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Sources. The live list: the USGS FDSN event service. Wyoming’s counts and largest quakes: the USGS ComCat catalog, read October 10, 2026, counted inside the state’s Census boundary and within 150 km of its coast where USGS names the state. Cheyenne: the state’s most populous city in the Census Vintage 2024 estimates. Older years hold fewer small quakes because fewer instruments were listening.

Hero photograph: the San Andreas Fault across the Carrizo Plain. “Kluft-photo-Carrizo-Plain-Nov-2007-Img 0327” by Ikluft, CC BY-SA 4.0