Environmental Risk Report for Yellowstone County, Montana
Comprehensive environmental hazard assessment
Coordinates: 45.9372°N, 108.2743°W • FIPS: 30111
Risk Assessment for Yellowstone County, Montana
About Yellowstone County, Montana
Yellowstone County is a county in MT known for its semi-arid highland climate with cold winters and warm, dry summers. The mountainous terrain offers stunning landscapes but introduces challenges including wildfire risk, landslides, and extreme winter weather.
Our risk scores for Yellowstone County are calculated using data from the Federal Emergency Management Agency (FEMA) National Risk Index, the U.S. Geological Survey (USGS) earthquake databases, the Environmental Protection Agency (EPA) AirNow program, and the National Weather Service (NWS) alert system. These federal datasets provide comprehensive coverage of natural and technological hazard exposure.
Notable historical events affecting this area include the 2017 Lolo Creek Fire (Multiple fires burned over 1 million acres across MT). These events underscore the importance of environmental risk awareness and preparedness for residents and property owners.
Notable Historical Events in Montana
Understanding Risk Factors for Yellowstone County
🌊 Flood Risk
Flood risk in Yellowstone County is assessed using FEMA flood zone data, historical flood events, and proximity to water bodies. Areas near rivers, coastlines, and low-lying regions typically face elevated flood potential. Local topography and drainage infrastructure play a significant role in determining neighborhood-level risk.
🔥 Wildfire Risk
Yellowstone County is situated in a region with high wildfire potential due to seasonal dry conditions, abundant vegetation, and terrain that can accelerate fire spread. Recent fire seasons have grown longer and more intense due to drought conditions and rising temperatures. Local fire departments and CalFire (or equivalent) maintain constant vigilance during peak fire season.
❄️ Winter Storm Risk
Yellowstone County experiences severe winter weather including blizzards, ice storms, and dangerously low wind chills. Heavy snowfall can collapse roofs, ice accumulation can bring down power lines, and freeze-thaw cycles damage roads and infrastructure. Winter storm preparedness is essential for residents.
💨 Air Quality
Air quality monitoring in Yellowstone County draws from EPA AirNow sensors measuring particulate matter (PM2.5), ozone levels, and other pollutants that affect respiratory health. Seasonal variations and agricultural or industrial activity can influence local air quality.
🏜️ Drought Risk
Yellowstone County faces recurring drought conditions that strain water supplies, increase wildfire risk, and affect agriculture. Multi-year droughts have become more frequent, with reservoir levels reaching historic lows. Water conservation measures are a permanent part of life in this arid region.
⛰️ Landslide Risk
Yellowstone County's mountainous terrain creates landslide and debris flow risk, especially during heavy rain events or rapid snowmelt. Steep slopes, unstable soils, and areas burned by wildfire are particularly susceptible to landslides.
Other County Risk Reports in Montana
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