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Foster County, North Dakota

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

Very Low overall risk
38th of 53highest risk in North Dakota
$4Mexpected losses a year
21federal declarations
1 in 1000homes with flood insurance
Photo: Bold Frontiers, CC BY 2.0

Foster County, North Dakota has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 93% of US counties. It ranks 38th of 53 counties in North Dakota. The costliest hazards here are cold waves, strong wind and inland flooding. FEMA estimates about $3.9 million a year in expected losses, or roughly $1,161 per resident. Since 1969 it has been included in 21 federal disaster or emergency declarations for natural events (19 major disasters). The most recent was in September 2025 (severe storm, tornadoes and straight-line winds). Only 2 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $98,000 on 11 claims here.

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

Top risks in Foster County

$1.6 million a yearExpected losses. Damaging events about 20 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.

Strong wind

Moderate
$920,090 a yearExpected losses. Damaging events about 2 times a year.
  • Secure outdoor furniture and trash bins before storms.
  • Have trees near the house checked.
$525,258 a yearExpected losses. Damaging events about once every 4 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.
HazardRatingScoreExpected loss a year
Cold waveLow62.3
$2M
Strong windModerate67.9
$920K
Inland floodingVery Low3.2
$525K
HailLow58.6
$366K
TornadoVery Low18.3
$212K
Winter weatherModerate72.9
$153K
Ice stormLow56.8
$116K
WildfireVery Low48.4
$44K
Heat waveVery Low8.4
$13K
DroughtVery Low24.4
$11K
LightningVery Low1.2
$5K
EarthquakeVery Low1.4
$1K
LandslideVery Low11.8
$37

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 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 Foster County. 2020s bar runs to November 2026.

By type

Flood12
Severe Storm8
Coastal Storm1

Most recent

Sep 11, 2025Severe Storm, Tornadoes, and Straight-Line WindsMajor disaster
Jul 13, 2022Severe Winter Storm and FloodingMajor disaster
Jul 9, 2020FloodingMajor disaster
Jan 21, 2020FloodingMajor disaster
May 29, 2013FloodingMajor disaster
May 10, 2011FloodingMajor disaster
Apr 30, 2010FloodingMajor disaster
Mar 14, 2010FloodingEmergency
Mar 24, 2009Severe Storms and FloodingMajor disaster
Sep 13, 2005Hurricane Katrina EvacuationEmergency
Show all 21
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 1, 1994Severe Storms, FloodingMajor disaster
Apr 26, 1979Severe Storms, Snowmelt & FloodingMajor disaster
May 14, 1974Heavy Rains, Snowmelt & FloodingMajor disaster
Apr 18, 1969FloodingMajor disaster

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

Storm history since 1957

Tornado risk by county ›

The National Weather Service has logged 191 storm reports in Foster County since 1957, with 0 deaths and 2 injuries and about $17.8 million in reported damage. The strongest on record here was an F2 tornado on July 29, 1972.

15tornadoes
101hail reports, largest 2.75 inches
66damaging thunderstorm winds
7floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jul 29, 1972F2–0 / 0
Jun 20, 2025EF1Grace City0 / 0
Jul 21, 1987F1–0 / 0
Aug 18, 1994F1Carrington0 / 0
Jun 26, 1977F1–0 / 0

Most damaging storms

DateTypeNearDamage
Jun 25, 1999Thunderstorm WindMelville$10M
Jul 21, 2014Thunderstorm WindBordulac$3M
Aug 6, 2011Flash FloodBordulac$1M
Jul 21, 2014Thunderstorm WindGrace City$600K
Apr 1, 2009FloodBarlow$555K
Jul 21, 2014Thunderstorm WindMelville$325K

Source: NOAA Storm Events Database, county-based reports through Aug 18, 2025. 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 Foster County

Check your address flood zone ›
0.1%of homes have federal flood insurance (2 policies)
0%of homes in mapped high-risk flood zones are insured
$98,119paid on 11 flood claims since 1978
2011costliest year, with $40,262 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 Foster County

$167,500median home value (North Dakota $249,900, US $332,700)
1973median year homes were built (North Dakota 1982, US 1980)
67%of homes built before 1980, before many modern wind, quake and flood building rules
5%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; 1,775 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
Stutsman CountyLow29
Wells CountyVery Low27
Eddy CountyVery Low22
Griggs CountyVery Low21

Common questions about Foster County

What is the biggest natural hazard in Foster County?

Cold wave has the highest expected yearly losses in Foster County, about $1.6 million a year in FEMA's estimate. Strong wind is second at $920,090.

How many federal disasters has Foster County had?

Foster County has been included in 21 federal disaster or emergency declarations for natural events since 1969, including 19 major disasters. The most recent was Severe Storm, Tornadoes, and Straight-Line Winds in September 2025.

Is Foster County a high-risk place to live?

Its overall rating is Very Low, 38th 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 Foster County?

Standard home insurance does not cover flooding. About 1 in 1000 homes in Foster 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 Foster County had?

NOAA records list 15 tornadoes in Foster County since 1950. The strongest was an F2 tornado on July 29, 1972. The weather service has also logged 101 hail reports and 7 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.