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McLean County, North Dakota

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

Relatively Low overall risk
12th of 53highest risk in North Dakota
$16Mexpected losses a year
23federal declarations
Photo: Bold Frontiers, CC BY 2.0

McLean County, North Dakota has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 57% of US counties. It ranks 12th of 53 counties in North Dakota. The costliest hazards here are cold waves, inland flooding and hail. FEMA estimates about $16 million a year in expected losses, or roughly $1,688 per resident. Since 1966 it has been included in 23 federal disaster or emergency declarations for natural events (19 major disasters). The most recent was in September 2026 (severe storms, straight-line winds and tornadoes). Only 2 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $77,000 on 10 claims here.

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

Top risks in McLean County

Cold wave

Moderate
$5.9 million a yearExpected losses. Damaging events about 19 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
$4.6 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.

Hail

Moderate
$1.6 million a yearExpected losses. Damaging events about 2 times a year.
  • Ask about the roof age and any impact-rated shingles.
  • Check your home policy for a separate wind and hail deductible.
HazardRatingScoreExpected loss a year
Cold waveModerate84.4
$6M
Inland floodingVery Low33.1
$5M
HailModerate86.5
$2M
TornadoLow45.5
$1M
Strong windModerate69.8
$1M
Winter weatherHigh94.4
$746K
Ice stormModerate81.0
$540K
WildfireLow77.0
$376K
Heat waveVery Low15.7
$48K
LightningVery Low11.6
$48K
DroughtLow32.1
$39K
EarthquakeVery Low15.0
$20K
LandslideVery Low30.1
$374

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 low and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Severe Storm10
Flood9
Snowstorm2
Drought1
Coastal Storm1

Most recent

Sep 1, 2026Severe Storms, Straight-Line Winds, and TornadoesMajor disaster
Sep 11, 2025Severe Storm, Tornadoes, and Straight-Line WindsMajor disaster
Jul 13, 2022Severe Winter Storm and FloodingMajor disaster
Jul 12, 2013Severe Storms and FloodingMajor disaster
May 10, 2011FloodingMajor disaster
Apr 7, 2011FloodingEmergency
Apr 21, 2010Severe Winter StormMajor disaster
Mar 24, 2009Severe Storms and FloodingMajor disaster
Nov 21, 2005Severe Winter Storm and Record And/Or Near Record SnowMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Show all 23
Apr 2, 2004SnowEmergency
May 28, 2001Severe Storms, Flooding, & Ground SaturationMajor disaster
Jun 27, 2000Severe Storms, Flooding and Ground SaturationMajor disaster
Jun 8, 1999Severe Storms, Flooding, Snow, Ice, Ground Saturation, Lanslides, Mudslides, and TorMajor disaster
Apr 7, 1997Severe Flooding,Severe Winter Storms, Snowmelt, Spring RainsMajor disaster
Jan 12, 1997Severe Winter Storms and Blizzard ConditionsMajor disaster
Jun 5, 1996Severe Storms,Flooding, & Ice JamsMajor disaster
May 16, 1995Severe Storms, Flooding, and Ground SaturationMajor disaster
Jul 26, 1993Severe Storms & FloodingMajor disaster
Apr 26, 1979Severe Storms, Snowmelt & FloodingMajor disaster
Jul 21, 1976DroughtEmergency
Apr 18, 1969FloodingMajor disaster
Jul 9, 1966Severe Storms & FloodingMajor disaster

North Dakota also had 25 statewide declarations that did not name single counties.

Storm history since 1955

Tornado risk by county ›

The National Weather Service has logged 572 storm reports in McLean County since 1955, with 1 death and 17 injuries and about $18.1 million in reported damage. The strongest on record here was an F3 tornado on June 5, 1956.

48tornadoes
283hail reports, largest 4.5 inches
224damaging thunderstorm winds
11floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 5, 1956F3–0 / 0
Aug 15, 2022EF2Ruso0 / 0
Aug 24, 2006F2Underwood0 / 0
May 24, 1975F2–5 / 0
Aug 3, 1955F2–0 / 0

Most damaging storms

DateTypeNearDamage
Jun 2, 2011FloodRiverdale$5M
Jul 12, 2006Thunderstorm WindColeharbor$3M
Jul 23, 2015Thunderstorm WindUnderwood$700K
Aug 24, 2006Thunderstorm WindWashburn$675K
Aug 23, 2022HailRaub$500K
Aug 1, 2023Thunderstorm WindRoseglen$500K

Source: NOAA Storm Events Database, county-based reports through Jul 29, 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 McLean County

Check your address flood zone ›
0%of homes have federal flood insurance (2 policies)
0%of homes in mapped high-risk flood zones are insured
$76,662paid on 10 flood claims since 1978
1999costliest year, with $50,000 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 McLean County

$227,100median home value (North Dakota $249,900, US $332,700)
1975median year homes were built (North Dakota 1982, US 1980)
62%of homes built before 1980, before many modern wind, quake and flood building rules
6.7%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; 5,807 housing units.

Compare in North Dakota

All 53 ›
Largest countiesOverall riskTop hazard
Cass CountyModerateInland flooding
Burleigh CountyModerateInland flooding
Grand Forks CountyLowInland flooding
Ward CountyLowCold wave
Williams CountyLowCold wave
Stark CountyVery LowCold wave
Morton CountyLowInland flooding
Stutsman CountyLowCold wave

Neighboring counties

CountyOverall riskDeclarations
Burleigh CountyModerate20
Ward CountyLow26
Mountrail CountyVery Low25
Mercer CountyVery Low23
McHenry CountyVery Low30
Dunn CountyVery Low16
Oliver CountyVery Low20
Sheridan CountyVery Low20

Common questions about McLean County

What is the biggest natural hazard in McLean County?

Cold wave has the highest expected yearly losses in McLean County, about $5.9 million a year in FEMA's estimate. Inland flooding is second at $4.6 million.

How many federal disasters has McLean County had?

McLean County has been included in 23 federal disaster or emergency declarations for natural events since 1966, including 19 major disasters. The most recent was Severe Storms, Straight-Line Winds, and Tornadoes in September 2026.

Is McLean County a high-risk place to live?

Its overall rating is Relatively Low, 12th highest of 53 in North Dakota. 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 McLean 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 McLean County had?

NOAA records list 48 tornadoes in McLean County since 1950. The strongest was an F3 tornado on June 5, 1956. The weather service has also logged 283 hail reports and 11 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.