Natural hazards · Porter

Porter, WI natural hazards

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

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

Expected damage

How exposed is Porter?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Porter to be higher than in 76% of U.S. communities, mostly from inland flooding.

Inland flooding67%Tornadoes13%Cold waves12%Everything else9%

By hazard

What Porter faces

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

Inland flooding

67% of expected damage

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

Recorded about 2 times a year in the area

Tornadoes

13% of expected damage

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

Recorded about once every 22 years in the area

Cold waves

12% of expected damage

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

Recorded about 5 times a year in the area

Lower here

HurricanesHailIce 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 Porter flood?

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

of homes in flood zones
are insured

of all homes
are insured

No community discount. Porter 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 Porter

Federal disasters declared here

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

Brought FEMA money into PorterDeclared for Rock County only

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

Around Porter

Porter and the towns around it

Very lowLowModerateHighVery high

Portermostly inland floodingHigh

Fultonmostly inland floodingHigh

Centermostly inland floodingLow

Dunkirkmostly inland floodingVery low

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