Natural hazards · Addison

Addison, WI natural hazards

Most of the natural-hazard damage FEMA expects in Addison comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 2 claims here since 2008. 3 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Addison?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Addison to be higher than in 12% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding45%Cold waves22%Tornadoes19%Hail6%Everything else9%

By hazard

What Addison faces

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

Inland flooding

45% of expected damage

Well below average · higher than 19% of U.S. places

Recorded about once every 2 years in the area

Cold waves

22% of expected damage

Below average · higher than 34% of U.S. places

Recorded about 5 times a year in the area

Tornadoes

19% of expected damage

Well above average · higher than 77% of U.S. places

Recorded about once every 21 years in the area

Hail

6% of expected damage

Well above average · higher than 84% of U.S. places

Recorded about 3 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 Addison flood?

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

2paid claims since 2008

$31Kpaid to owners

0homes flooded more than once

20082026

Biggest named events

Storm: 2 claims, $31K

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Washington County.

Disasters that hit Addison

3 federal disasters brought FEMA money here

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

Brought FEMA money into AddisonDeclared for Washington County only

2011

Severe Winter Storm and Snowstorm

$9K to the Town of Addison for repairs

2008

Severe Storms, Tornadoes, and Flooding

$32K to the Town of Addison for repairs

2008

Record Snow and Near Record Snow

$7K to the Town of Addison for repairs

Washington County has had 12 natural disasters declared since 1953, most often floods and severe storms.

Around Addison

Addison and the towns around it

Very lowLowModerateHighVery high

Hermanmostly inland floodingLow

Addisonmostly inland floodingVery low

Waynemostly inland floodingVery low

West Bendmostly inland floodingVery low

Hartfordmostly 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. Addison covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Addison’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Town of Addison. 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 Addison total about $2.4M 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.