Natural hazards · Sweet Grass

Sweet Grass, MT natural hazards

Most of the natural-hazard damage FEMA expects in Sweet Grass comes from cold waves, and overall the risk is very low for a U.S. community.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Sweet Grass?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Sweet Grass to be higher than in 14% of U.S. communities, mostly from cold waves and inland flooding.

Cold waves49%Inland flooding44%Everything else7%

By hazard

What Sweet Grass faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Cold waves

49% of expected damage

Well above average · among the top 1% of U.S. places

Recorded about 11 times a year in the area

Inland flooding

44% of expected damage

Below average · higher than 40% of U.S. places

Recorded about once every 6 years in the area

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDroughtAvalanches

Not a risk here

Coastal floodingHurricanesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Sweet Grass flood?

FEMA's records show no paid flood insurance claims in Sweet Grass.

Disasters that hit Sweet Grass

Federal disasters declared here

None of the disasters declared for Toole County shows FEMA aid or repair money reaching Sweet Grass itself in FEMA’s records.

Brought FEMA money into Sweet GrassDeclared for Toole County only

Toole County has had 10 natural disasters declared since 1953, most often severe storms and floods.

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Sweet Grass is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Sweet Grass’s own flood-insurance community; household aid to the registrant’s city; repair grants to Sweet Grass. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.