Montana earthquakes in 1978
23 earthquakes of magnitude 2.5 or more were located in Montana in 1978. The largest: M4.5 12 km WSW of Ovando, Montana, Apr 23, 1978.
From the USGS catalog. Times are local to each quake.
Map
Where every quake of 1978 was located in Montana. Select one for its page.
Every quake of 1978
Magnitude 2.5 and up, newest first.
- 3.49 km ESE of Garrison, Montana · 5 km deep
- 4.315 km W of Ovando, Montana · 5 km deep
- 3.53 km SW of Hebgen Lake Estates, Montana · 5 km deep
- 3.510 km WSW of Ovando, Montana · 5 km deep
- 3.48 km NNW of Ovando, Montana · 5 km deep
- 2.72 km NNW of Helena West Side, Montana · 5 km deep
- 3.624 km ENE of West Yellowstone, Montana · 5 km deep
- 3.526 km ENE of West Yellowstone, Montana · 5 km deep
- 2.549 km SSE of Mammoth, Wyoming · 5 km deep
- 3.013 km WSW of Ovando, Montana · 5 km deep
- 3.527 km E of Shelby, Montana · 5 km deep
- 3.213 km W of Ovando, Montana · 5 km deep
- 3.713 km W of Ovando, Montana · 5 km deep
- 4.512 km WSW of Ovando, Montana · 5 km deep
- 2.834 km ESE of Pray, Montana · 5 km deep
- 3.814 km ENE of Seeley Lake, Montana · 5 km deep
- 3.138 km ENE of Warm River, Idaho · 5 km deep
- 3.5Wyoming · 5 km deep
- 3.337 km SE of West Yellowstone, Montana · 4 km deep
- 2.639 km SSE of West Yellowstone, Montana · 4 km deep
- 2.837 km SE of West Yellowstone, Montana · 4 km deep
- 3.737 km SE of West Yellowstone, Montana · 5 km deep
- 3.649 km W of Hebgen Lake Estates, Montana · 5 km deep
Month by month
Counted by UTC date, which is how the catalog files them.
| Month | Quakes | Largest | Where |
|---|---|---|---|
| January 1978 | 1 | 3.6 | 49 km W of Hebgen Lake Estates, Montana |
| February 1978 | 4 | 3.7 | 37 km SE of West Yellowstone, Montana |
| March 1978 | 3 | 3.8 | 14 km ENE of Seeley Lake, Montana |
| April 1978 | 3 | 4.5 | 12 km WSW of Ovando, Montana |
| May 1978 | 1 | 3.2 | 13 km W of Ovando, Montana |
| June 1978 | 0 | ||
| July 1978 | 0 | ||
| August 1978 | 1 | 3.5 | 27 km E of Shelby, Montana |
| September 1978 | 2 | 3.0 | 13 km WSW of Ovando, Montana |
| October 1978 | 5 | 3.6 | 24 km ENE of West Yellowstone, Montana |
| November 1978 | 3 | 4.3 | 15 km W of Ovando, Montana |
| December 1978 | 0 |
What this means
The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.
By year
Every year the USGS catalog covers.
- 2020s2020202120222023202420252026
- 2010s2010201120122013201420152016201720182019
- 2000s2000200120022003200420052006200720082009
- 1990s1990199119921993199419951996199719981999
- 1980s1980198119821983198419851986198719881989
- 1970s1970197119721973197419751976197719781979
- 1960s1960196119621963196419651966196719681969
- 1950s1950195119521953195419551956195719581959
- 1940s1940194119421943194419451946194719481949
- 1930s1930193119321933193419351936193719381939
- 1920s1920192119221923192419251926192719281929
- 1910s1910191119121913191419151916191719181919
- 1900s1900190119021903190419051906190719081909
Nearby
Sources
Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.