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Watonwan County, Minnesota

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

Very Low overall risk
62nd of 87highest risk in Minnesota
$8Mexpected losses a year
11federal declarations
Photo: U.S. Geological Survey, public domain

Watonwan County, Minnesota has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 76% of US counties. It ranks 62nd of 87 counties in Minnesota. The costliest hazards here are inland flooding, cold waves and tornadoes. FEMA estimates about $8.0 million a year in expected losses, or roughly $709 per resident. Since 1965 it has been included in 11 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in June 2024 (severe storms and flooding). Only 3 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $1.1 million on 16 claims here, including $894,000 for floods in 2024.

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

Top risks in Watonwan County

$2.9 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.

Cold wave

Moderate
$1.9 million a yearExpected losses. Damaging events about 11 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
$1 million a yearExpected losses. Damaging events about once every 3 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 floodingVery Low24.9
$3M
Cold waveModerate68.0
$2M
TornadoLow44.4
$1M
DroughtModerate75.3
$693K
Strong windModerate55.9
$634K
HailLow54.8
$314K
Heat waveLow41.6
$242K
Winter weatherModerate76.1
$171K
LightningVery Low17.4
$58K
Ice stormLow37.2
$45K
EarthquakeVery Low10.7
$10K
WildfireVery Low9.2
$3K
LandslideVery Low21.8
$137

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 relatively moderate and community resilience is relatively moderate in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Flood6
Severe Storm3
Drought1
Hurricane1

Most recent

Jun 28, 2024Severe Storms and FloodingMajor disaster
Jun 12, 2019Severe Winter Storm, Straight-Line Winds, and FloodingMajor disaster
Sep 5, 2018Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Jul 21, 2014Severe Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disaster
Oct 13, 2010Severe Storms and FloodingMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Jan 16, 1997Severe Winter StormsMajor disaster
Jun 11, 1993Severe Storms, Tornadoes & FloodingMajor disaster
Jun 17, 1976DroughtEmergency
Apr 18, 1969FloodingMajor disaster
Show all 11
Apr 11, 1965FloodingMajor disaster

Minnesota also had 26 statewide declarations that did not name single counties.

Storm history since 1962

Tornado risk by county ›

The National Weather Service has logged 221 storm reports in Watonwan County since 1962 and about $10.9 million in reported damage. The strongest on record here was an F4 tornado on March 29, 1998 near Darfur.

24tornadoes
101hail reports, largest 3 inches
73damaging thunderstorm winds
17floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Mar 29, 1998F4Darfur0 / 0
Aug 1, 2006F3Butterfield0 / 0
Jul 16, 1963F2–0 / 0
Aug 9, 1977F2–0 / 0
May 18, 1962F2–0 / 0

Most damaging storms

DateTypeNearDamage
Sep 23, 2010FloodOdin$4M
Jun 28, 1979Tornado–$3M
Aug 1, 2006TornadoButterfield$2M
Aug 1, 2006TornadoEchols$500K
Aug 1, 2006TornadoSt James$500K
Jun 20, 2019Thunderstorm WindSt James Arpt$500K

Source: NOAA Storm Events Database, county-based reports through Jun 30, 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 Watonwan County

Check your address flood zone ›
0%of homes have federal flood insurance (3 policies)
0%of homes in mapped high-risk flood zones are insured
$1.1 millionpaid on 16 flood claims since 1978
2024costliest year, with $894,277 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 Watonwan County

$162,400median home value (Minnesota $329,300, US $332,700)
1962median year homes were built (Minnesota 1979, US 1980)
72%of homes built before 1980, before many modern wind, quake and flood building rules
2.8%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; 4,881 housing units.

Compare in Minnesota

All 87 ›
Largest countiesOverall riskTop hazard
Hennepin CountyHighInland flooding
Ramsey CountyHighInland flooding
Dakota CountyModerateInland flooding
Anoka CountyModerateInland flooding
Washington CountyModerateInland flooding
St. Louis CountyModerateCold wave
Olmsted CountyModerateInland flooding
Stearns CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Blue Earth CountyLow22
Brown CountyLow18
Martin CountyLow13
Cottonwood CountyVery Low15
Jackson CountyVery Low16

Common questions about Watonwan County

What is the biggest natural hazard in Watonwan County?

Inland flooding has the highest expected yearly losses in Watonwan County, about $2.9 million a year in FEMA's estimate. Cold wave is second at $1.9 million.

How many federal disasters has Watonwan County had?

Watonwan County has been included in 11 federal disaster or emergency declarations for natural events since 1965, including 9 major disasters. The most recent was Severe Storms and Flooding in June 2024.

Is Watonwan County a high-risk place to live?

Its overall rating is Very Low, 62nd highest of 87 in Minnesota. 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 Watonwan County?

Standard home insurance does not cover flooding. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Watonwan County had?

NOAA records list 24 tornadoes in Watonwan County since 1950. The strongest was an F4 tornado on March 29, 1998 near Darfur. The weather service has also logged 101 hail reports and 17 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.