Roseau County, Minnesota

What hazards hit Roseau County most?

The most frequent records are hail reports: 252 since 1973. 58% of its hail reports since 1973 fell in June and July. The rank column places the county among Minnesota's counties by days with a record per 1,000 square miles of land over each hazard's complete period.

Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.

How many tornadoes has Roseau County had?

NOAA records 38 tornadoes in Roseau County from 1966 to 2024, the strongest rated F3, with 0 deaths and 2 injuries recorded in the county. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.

Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 42 tornadoes whose track touched Roseau County since 1950 (NOAA's county records number 38: they file a crossing tornado once per county segment, and the two databases differ on some tracks); along their whole tracks they killed 0 people.

Map of the strongest tornado tracks in Minnesota.

Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.

When was the last damaging storm in Roseau County?

The most recent record with damage, injuries or deaths is the June 17, 2020 tornado ($177,000 in damage in 2025 dollars).

A tornado was observed as it developed off the north end of a downburst corridor moving across Dieter and Ross townships. The tornado tracked through a farmstead, where it demolished a pole shed and spread debris for nearly a mile to the north. Numerous trees were also snapped. Peak winds were estimated at 105 mph.
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 897930)

Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.

The deadliest and costliest records

A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.

Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.

Is it getting more frequent?

Records per decade for Roseau County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).

Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).

What time of year?

58% of its hail reports since 1973 fell in June and July. The two busiest months are in violet.

Source: NOAA NCEI Storm Events Database, records by the month they began.

Federal disaster declarations for Roseau County

FEMA's register lists 26 declarations that include Roseau County: 24 major disasters, 2 emergencies and 0 fire management assistance declarations. Most were for flood (16) and severe storm (6).

Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.

How many floods has Roseau County had?

NOAA's Storm Events Database holds 23 flood or flash flood records for Roseau County from 1996 to 2023, on 20 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Roseau County ranks 788th of 2,942 U.S. counties.

The National Flood Insurance Program has paid $3.4 million on 279 claims filed in Roseau County; the most in one year was 266 in 2002. Claims count insured losses only: uninsured flood damage is not in this file.

Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.

FEMA's modeled risk for Roseau County

FEMA's National Risk Index rates Roseau County Relatively Low overall, with an expected annual loss of $15.7 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.

Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.

Counties that share a border with Roseau County

1. Beltrami County 1,020
2. Marshall County 954
3. Kittson County 687
4. Roseau County 686
5. Lake of the Woods County 412

Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.

Next

• Tornadoes in MinnesotaEvery Minnesota tornado since 1950 and the counties with the most per square mile
• Hail in MinnesotaThe state's hail reports, by county, year and month
• The Minnesota recordEvery hazard in the state, its deadliest events and its federal declarations
• FEMA's risk rating for each hazard in Roseau CountyThe hazard risk calculator: 18 hazards beside the county's record
• Download Roseau County's FEMA declarations (CSV)26 rows: every declaration that named the county, for your own analysis