Natural hazards · Avon

Avon, WI natural hazards

Most of the natural-hazard damage FEMA expects in Avon comes from inland flooding, and overall the risk is low for a U.S. community.

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

Expected damage

How exposed is Avon?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Avon to be higher than in 25% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding46%Tornadoes18%Cold waves17%Hail8%Everything else11%

By hazard

What Avon faces

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

Inland flooding

46% of expected damage

Below average · higher than 32% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

18% of expected damage

Well above average · higher than 88% of U.S. places

Recorded about once every 14 years in the area

Cold waves

17% of expected damage

Below average · higher than 30% of U.S. places

Recorded about 5 times a year in the area

Hail

8% of expected damage

Well above average · higher than 89% of U.S. places

Recorded about 5 times a year in the area

Lower here

HurricanesIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

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 Avon flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Rock County.

Disasters that hit Avon

Federal disasters declared here

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

Brought FEMA money into AvonDeclared for Rock County only

Rock County has had 14 natural disasters declared since 1953, most often severe storms and floods.

Around Avon

Avon and the towns around it

Very lowLowModerateHighVery high

Spring Grovemostly inland floodingLow

Avonmostly inland floodingLow

Newarkmostly inland floodingLow

Spring Valleymostly inland floodingLow

Laonamostly inland floodingVery low

Shirlandmostly 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. Avon 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 Avon’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Avon. 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.