Natural Disaster Risk in Mosca

Natural Hazard Profile: Mosca, Colorado

Mosca is a small community of about 637 in Alamosa County, in the Great Plains. The area experiences dry air, significant mountain snowfall, and rapid weather changes, with dramatic spring snowstorms and summer hailstorms 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 Mosca.

FEMA rates Mosca's composite natural disaster risk at 5.3 out of 10 — moderate risk. Snow avalanche exposure tops the local risk profile, with the area's mountain setting and annual snowfall loading producing regular avalanche cycles on steep slopes. Residents should also account for drought and earthquake risk in their preparedness planning.

Mosca's risk score, near the 5.2/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Alamosa County, the highest-scoring are avalanche, drought, and earthquake. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

With a moderate risk rating, Mosca 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.