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Adams County, Wisconsin

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
23rd of 72highest risk in Wisconsin
$20Mexpected losses a year
10federal declarations
1 in 500homes with flood insurance
Photo: U.S. Geological Survey, public domain

Adams County, Wisconsin has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 71% of US counties. It ranks 23rd of 72 counties in Wisconsin. The costliest hazards here are inland flooding, cold waves and tornadoes. FEMA estimates about $20 million a year in expected losses, or roughly $953 per resident. Since 1976 it has been included in 10 federal disaster or emergency declarations for natural events (8 major disasters). The most recent was in October 2018 (severe storms, tornadoes, straight-line winds, flooding and landslides). Only 34 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $90,000 on 32 claims here.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Adams County

$9.6 million a yearExpected losses. Damaging events about once every 2 years.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.
$5 million a yearExpected losses. Damaging events about 7 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.

Tornado

Moderate
$1.9 million a yearExpected losses. Damaging events about once every 2 years.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.
HazardRatingScoreExpected loss a year
Inland floodingLow72.5
$10M
Cold waveHigh90.4
$5M
TornadoModerate73.4
$2M
HailModerate92.6
$1M
Strong windModerate76.3
$773K
Heat waveLow72.4
$678K
LightningLow32.5
$80K
DroughtLow40.6
$47K
Ice stormLow45.6
$47K
WildfireVery Low53.1
$37K
Winter weatherLow44.6
$36K
EarthquakeVery Low21.2
$21K
HurricaneVery Low9.5
$1K
LandslideVery Low50.4
$910

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very high and community resilience is relatively low in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Adams County. 2020s bar runs to November 2026.

By type

Severe Storm5
Flood3
Drought1
Hurricane1

Most recent

Oct 18, 2018Severe Storms, Tornadoes, Straight-Line Winds, Flooding, and LandslidesMajor disaster
Oct 20, 2016Severe Storms, Flooding, and MudslidesMajor disaster
Jun 14, 2008Severe Storms, Tornadoes, and FloodingMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Jun 18, 2004Severe Storms and FloodingMajor disaster
Jul 19, 2002Severe Storms and FloodingMajor disaster
May 11, 2001Flooding, Severe Storms and TornadoesMajor disaster
Jun 24, 2000Severe Storms, Tornadoes, and FloodingMajor disaster
Jul 2, 1993Severe Storms, Tornadoes & FloodingMajor disaster
Jun 17, 1976DroughtEmergency

Wisconsin also had 8 statewide declarations that did not name single counties.

Storm history since 1966

Tornado risk by county ›

The National Weather Service has logged 330 storm reports in Adams County since 1966, with 0 deaths and 27 injuries and about $19.1 million in reported damage. The strongest on record here was an EF2 tornado on April 10, 2011 near Causeway.

18tornadoes
109hail reports, largest 2 inches
174damaging thunderstorm winds
19floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 10, 2011EF2Causeway0 / 0
Jul 10, 1984F2–0 / 0
Jul 19, 1980F2–0 / 0
Apr 10, 2011EF1Big Flats0 / 0
May 18, 1971F1–5 / 0

Most damaging storms

DateTypeNearDamage
Aug 28, 2018Thunderstorm WindPlainville$6M
Apr 10, 2011TornadoCauseway$3M
Jul 10, 1984Tornado–$3M
Jul 6, 2017HailBig Flats$1M
Aug 28, 2018Flash FloodEaston$805K
Mar 14, 2019FloodNew Rome$750K

Source: NOAA Storm Events Database, county-based reports through Jul 1, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Adams County

Check your address flood zone ›
0.2%of homes have federal flood insurance (34 policies)
2.7%of homes in mapped high-risk flood zones are insured
$89,665paid on 32 flood claims since 1978
2010costliest year, with $36,890 paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Adams County

$200,800median home value (Wisconsin $266,500, US $332,700)
1984median year homes were built (Wisconsin 1975, US 1980)
44%of homes built before 1980, before many modern wind, quake and flood building rules
18.1%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 17,008 housing units.

Compare in Wisconsin

All 72 ›
Largest countiesOverall riskTop hazard
Milwaukee CountyHighCold wave
Dane CountyModerateInland flooding
Waukesha CountyModerateInland flooding
Brown CountyModerateInland flooding
Racine CountyModerateInland flooding
Outagamie CountyLowInland flooding
Winnebago CountyModerateInland flooding
Kenosha CountyModerateCold wave

Neighboring counties

CountyOverall riskDeclarations
Wood CountyLow11
Portage CountyLow10
Columbia CountyModerate9
Juneau CountyLow14
Waushara CountyLow8
Marquette CountyLow7

Common questions about Adams County

What is the biggest natural hazard in Adams County?

Inland flooding has the highest expected yearly losses in Adams County, about $9.6 million a year in FEMA's estimate. Cold wave is second at $5 million.

How many federal disasters has Adams County had?

Adams County has been included in 10 federal disaster or emergency declarations for natural events since 1976, including 8 major disasters. The most recent was Severe Storms, Tornadoes, Straight-Line Winds, Flooding, and Landslides in October 2018.

Is Adams County a high-risk place to live?

Its overall rating is Relatively Low, 23rd highest of 72 in Wisconsin. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Adams County?

Standard home insurance does not cover flooding. About 1 in 500 homes in Adams County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Adams County had?

NOAA records list 18 tornadoes in Adams County since 1950. The strongest was an EF2 tornado on April 10, 2011 near Causeway. The weather service has also logged 109 hail reports and 19 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.