Natural Disaster Risk in Alder

Natural Hazard Profile: Alder, Montana

Alder is a small unincorporated community in Madison County, in the northern tier of the continental United States. The area experiences cold winters, dry summers, and extreme temperature swings, with rapid chinook wind events and spring flooding shaping the pattern of natural hazards that residents encounter. Understanding the local risk profile is essential for anyone living in, moving to, or owning property in Alder.

According to FEMA's National Risk Index, Alder carries an overall risk score of 5.3/10, placing it in the moderate category. The threat of avalanche is the primary natural hazard here, with winter snowpack instability on mountain terrain posing risks to roads, structures, and outdoor recreation activities. The area also faces notable exposure to landslide and volcano.

Alder's risk score, near the 4.9/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Madison County, the highest-scoring are avalanche, landslide, and volcano. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

With a moderate risk rating, Alder residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for avalanche is recommended.