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Cavalier County, North Dakota

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

Very Low overall risk
28th of 53highest risk in North Dakota
$5Mexpected losses a year
24federal declarations
Photo: Bold Frontiers, CC BY 2.0

Cavalier County, North Dakota has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 88% of US counties. It ranks 28th of 53 counties in North Dakota. The costliest hazards here are cold waves, inland flooding and hail. FEMA estimates about $4.5 million a year in expected losses, or roughly $1,227 per resident. Since 1969 it has been included in 24 federal disaster or emergency declarations for natural events (23 major disasters). The most recent was in July 2022 (severe winter storm and flooding). No homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $256,000 on 13 claims here.

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

Top risks in Cavalier County

Cold wave

Moderate
$2 million a yearExpected losses. Damaging events about 24 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
$835,265 a yearExpected losses. Damaging events about once every 1 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

Low
$552,262 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 waveModerate72.3
$2M
Inland floodingVery Low6.8
$835K
HailLow72.9
$552K
Strong windLow42.3
$382K
Ice stormModerate77.5
$295K
Winter weatherModerate78.0
$164K
TornadoVery Low16.9
$156K
WildfireVery Low52.8
$47K
DroughtLow35.0
$35K
LightningVery Low10.3
$30K
Heat waveVery Low5.8
$6K
EarthquakeVery Low1.9
$2K
LandslideVery Low40.7
$598

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 low in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Flood11
Severe Storm11
Tornado1
Coastal Storm1

Most recent

Jul 13, 2022Severe Winter Storm and FloodingMajor disaster
Jul 12, 2017FloodingMajor disaster
Jul 12, 2013Severe Storms and FloodingMajor disaster
May 29, 2013FloodingMajor disaster
May 10, 2011FloodingMajor disaster
Mar 24, 2009Severe Storms and FloodingMajor disaster
Jul 17, 2007Severe Storms and FloodingMajor disaster
Jun 5, 2006Severe Storms, Flooding, and Ground SaturationMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Jul 22, 2005Severe Storms, Flooding, and Ground SaturationMajor disaster
Show all 24
May 5, 2004Severe Storms, Flooding, and Ground SaturationMajor disaster
May 28, 2001Severe Storms, Flooding, & Ground SaturationMajor disaster
Dec 29, 2000Severe Winter Storms and TornadoesMajor 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
May 14, 1974Heavy Rains, Snowmelt & FloodingMajor disaster
Jun 5, 1970Severe Storms & FloodingMajor disaster
Apr 18, 1969FloodingMajor 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 424 storm reports in Cavalier County since 1955, with 2 deaths and 3 injuries and about $23.2 million in reported damage. The strongest on record here was an EF2 tornado on June 9, 2017 near Easby.

43tornadoes
233hail reports, largest 4.5 inches
129damaging thunderstorm winds
17floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 9, 2017EF2Easby0 / 0
Jun 24, 1985F2–0 / 0
Jun 21, 1971F2–0 / 0
Jun 6, 1959F2–0 / 0
Jun 24, 1966F1–1 / 1

Most damaging storms

DateTypeNearDamage
Jul 12, 1999HailLangdon$5M
Jul 19, 2003HailLangdon$4M
Jun 9, 2017TornadoEasby$4M
Jun 9, 2017Thunderstorm WindMilton$4M
Jun 19, 2005Thunderstorm WindLangdon$2M
Jun 23, 2008HailSarles$900K

Source: NOAA Storm Events Database, county-based reports through Jul 9, 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 Cavalier County

Check your address flood zone ›
0%of homes have federal flood insurance (0 policies)
0%of homes in mapped high-risk flood zones are insured
$255,841paid on 13 flood claims since 1978
1996costliest year, with $144,258 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 Cavalier County

$125,800median home value (North Dakota $249,900, US $332,700)
1968median year homes were built (North Dakota 1982, US 1980)
72%of homes built before 1980, before many modern wind, quake and flood building rules
5.4%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; 2,109 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
Ramsey CountyVery Low27
Walsh CountyVery Low39
Pembina CountyVery Low36
Towner CountyVery Low26

Common questions about Cavalier County

What is the biggest natural hazard in Cavalier County?

Cold wave has the highest expected yearly losses in Cavalier County, about $2 million a year in FEMA's estimate. Inland flooding is second at $835,265.

How many federal disasters has Cavalier County had?

Cavalier County has been included in 24 federal disaster or emergency declarations for natural events since 1969, including 23 major disasters. The most recent was Severe Winter Storm and Flooding in July 2022.

Is Cavalier County a high-risk place to live?

Its overall rating is Very Low, 28th 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 Cavalier 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 Cavalier County had?

NOAA records list 43 tornadoes in Cavalier County since 1950. The strongest was an EF2 tornado on June 9, 2017 near Easby. The weather service has also logged 233 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.