McLean County, North Dakota
Natural disaster risk, federal disaster history and flood insurance facts.
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
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
- 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.
- Ask about the roof age and any impact-rated shingles.
- Check your home policy for a separate wind and hail deductible.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Cold wave | 84.4 | $6M | ||
| Inland flooding | 33.1 | $5M | ||
| Hail | 86.5 | $2M | ||
| Tornado | 45.5 | $1M | ||
| Strong wind | 69.8 | $1M | ||
| Winter weather | 94.4 | $746K | ||
| Ice storm | 81.0 | $540K | ||
| Wildfire | 77.0 | $376K | ||
| Heat wave | 15.7 | $48K | ||
| Lightning | 11.6 | $48K | ||
| Drought | 32.1 | $39K | ||
| Earthquake | 15.0 | $20K | ||
| Landslide | 30.1 | $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
Most recent
Show all 23
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.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Jun 5, 1956 | F3 | – | 0 / 0 |
| Aug 15, 2022 | EF2 | Ruso | 0 / 0 |
| Aug 24, 2006 | F2 | Underwood | 0 / 0 |
| May 24, 1975 | F2 | – | 5 / 0 |
| Aug 3, 1955 | F2 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Jun 2, 2011 | Flood | Riverdale | $5M |
| Jul 12, 2006 | Thunderstorm Wind | Coleharbor | $3M |
| Jul 23, 2015 | Thunderstorm Wind | Underwood | $700K |
| Aug 24, 2006 | Thunderstorm Wind | Washburn | $675K |
| Aug 23, 2022 | Hail | Raub | $500K |
| Aug 1, 2023 | Thunderstorm Wind | Roseglen | $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 ›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
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 counties | Overall risk | Top hazard |
|---|---|---|
| Cass County | Inland flooding | |
| Burleigh County | Inland flooding | |
| Grand Forks County | Inland flooding | |
| Ward County | Cold wave | |
| Williams County | Cold wave | |
| Stark County | Cold wave | |
| Morton County | Inland flooding | |
| Stutsman County | Cold wave |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Burleigh County | 20 | |
| Ward County | 26 | |
| Mountrail County | 25 | |
| Mercer County | 23 | |
| McHenry County | 30 | |
| Dunn County | 16 | |
| Oliver County | 20 | |
| Sheridan County | 20 |
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.