Earthquakes
Gallatin County, with the Intermountain Seismic Belt running through the middle, is historically very prone to earthquakes. In fact Montana has 7-10 earthquakes occur each day making it the fourth most seismically active state. The 14th largest earthquake in the contiguous United States occurred in 1959 at Hebgen Lake. The Hebgen Lake Earthquake measured Magnitude 7.5, killed 28 people, displaced 80 Million tons of rock, and caused over 11 Million dollars in damage.
Yellowstone National Park is one of the largest volcanic systems in the world. The formation of Yellowstone is the result of several large eruptions, each forming components that make up the park today. Activity in this volcanic system results in several thousand earthquakes each year in the park. In 1975 a 6.1 earthquake occurred in Norris Geyser Basin.
Between the active faults, and volcanic systems, the region around Gallatin County is very prone to earthquakes.
Faults Around the County
Historical Activity
What to Do During an Earthquake
Drop, Cover and Hold On
Be alert for items that can fall, and be alert for aftershocks
Follow your Family Emergency Plan
Family Emergency Plan
When you create your Family Emergency Plan you will identify the items that you and your family will need to be self sufficient.  These are the items that you need to survive on your own for a minimum of 72 hours (think food, water, medicine, animal needs, etc…).  Remember that the stores likely won’t be open, so you need to keep a reserve to meet your needs.