Natural hazards · Roundup

Roundup, MT natural hazards

Most of the natural-hazard damage FEMA expects in Roundup comes from cold waves, and overall the risk is low for a U.S. community. Flood insurance has paid 45 claims here since 1979. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Roundup?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Roundup to be higher than in 27% of U.S. communities, mostly from cold waves and inland flooding.

Cold waves39%Inland flooding29%Lightning14%Wildfire10%Everything else8%

By hazard

What Roundup faces

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

Cold waves

39% of expected damage

Well above average · higher than 94% of U.S. places

Recorded about 4 times a year in the area

Inland flooding

29% of expected damage

Below average · higher than 33% of U.S. places

Recorded about once a year in the area

Lightning

14% of expected damage

Above average · higher than 52% of U.S. places

Wildfire

10% of expected damage

Well above average · higher than 96% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesEarthquakesLandslidesStrong windDrought

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic 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 Roundup flood?

Every paid claim on a federal flood insurance policy in Roundup, from FEMA’s records.

45paid claims since 1979

$851Kpaid to owners

2homes flooded more than once

19792026

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

No community discount. Roundup isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Musselshell County.

What’s been done with FEMA grants

28flood-prone properties bought out and cleared

Disasters that hit Roundup

2 federal disasters brought FEMA money here

Disasters the President declared that paid out in Roundup itself: aid to households, or repair grants to the City of Roundup.

Brought FEMA money into RoundupDeclared for Musselshell County only

2014

Ice Jams and Flooding

$16K to the City of Roundup for repairs

2011

Severe Storms and Flooding

183 households applied for aid $741K aid approved $208K to the City of Roundup for repairs

Musselshell County has had 13 natural disasters declared since 1953, most often floods and fires.

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. Roundup 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 Roundup’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Roundup. 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.