July 26, 2005 Earthquake: Dillon, Silver Star, Twin Bridges, Montana, United States
A magnitude 5.6 earthquake struck Dillon, Silver Star, Twin Bridges, Montana, United States on July 26, 2005 at 04:08:37 UTC, 13 km below the surface.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- July 26, 2005
- Time
- 04:08:37 UTC
- Place
- Dillon, Silver Star, Twin Bridges, Montana, United States
- Magnitude
- 5.6 (Mw)
- Focal depth
- 13 km (8 mi)
- Intensity
- 6 on the Modified Mercalli scale
- Tsunami
- None recorded
- Epicenter
- 45.365° N, 112.615° W
- Country
- United States
The toll
- Damage
- Limited (under about $1 million)
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- August 18, 1959, Hebgen Lake, Montana, United States
- October 19, 1935, Helena, Montana, United States
- October 31, 1935, Helena, Montana, United States
- October 28, 1983, Borah Peak, Challis, Mackay, Idaho, United States
- May 8, 2007, Sheridan, Montana, United States
- June 28, 1925, Clarkston Valley, Montana, United States
More
Significant earthquakes of 2005The 2000sEvery quake the USGS located in 2005Recent earthquakes near hereThis day in weather history
Sources
Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 6764.