Natural hazards · Harrison

Harrison, WI natural hazards

Most of the natural-hazard damage FEMA expects in Harrison comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 1 claim here since 2010.

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

Expected damage

How exposed is Harrison?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Harrison to be higher than in 30% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding41%Cold waves17%Tornadoes15%Hail10%Strong wind8%Everything else10%

By hazard

What Harrison faces

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

Inland flooding

41% of expected damage

Below average · higher than 38% of U.S. places

Recorded about 3 times a year in the area

Cold waves

17% of expected damage

Below average · higher than 31% of U.S. places

Recorded about 6 times a year in the area

Tornadoes

15% of expected damage

Well above average · higher than 90% of U.S. places

Recorded about once every 12 years in the area

Hail

10% of expected damage

Well above average · higher than 86% of U.S. places

Recorded about 4 times a year in the area

Strong wind

8% of expected damage

Well above average · higher than 90% of U.S. places

Recorded about 5 times a year in the area

Lower here

HurricanesIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Harrison flood?

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

1paid claims since 2010

$4Kpaid to owners

0homes flooded more than once

20102026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Grant County.

Disasters that hit Harrison

Federal disasters declared here

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

Brought FEMA money into HarrisonDeclared for Grant County only

Grant County has had 17 natural disasters declared since 1953, most often severe storms and floods.

Around Harrison

Harrison and the towns around it

Very lowLowModerateHighVery high

Harrisonmostly inland floodingLow

Potosimostly inland floodingLow

Ellenboromostly inland floodingLow

Parismostly inland floodingVery low

Plattevillemostly inland floodingVery low

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. Harrison covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Harrison’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Town of Harrison. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Harrison total about $1.3M a year, counting buildings, people and crops.

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.