Cass County, North Dakota: hazard risk
FEMA rates Cass County's overall risk Relatively Moderate (score 82.4 of 100, higher than 82% of rated U.S. counties); 4 of its 13 hazards are rated Relatively High or Very High, led by winter weather, strong wind, ice storm. Its storm record holds 1,498 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Winter Weather | Very High | 99.6 | $3.9M |
| Strong Wind | Very High | 98.3 | $10M |
| Ice Storm | Very High | 96.0 | $3.2M |
| Hail | Relatively High | 96.8 | $6.8M |
| Tornado | Relatively Moderate | 89.7 | $12M |
| Cold Wave | Relatively Moderate | 88.1 | $10M |
| Riverine Flooding | Relatively Moderate | 80.6 | $34M |
| Lightning | Relatively Moderate | 63.2 | $640K |
| Heat Wave | Relatively Low | 57.1 | $868K |
| Wildfire | Very Low | 50.5 | $83K |
| Landslide | Very Low | 33.8 | $699 |
| Earthquake | Very Low | 24.1 | $69K |
| Drought | Very Low | 20.2 | $7K |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Hail | 498 | 0 | $127M | 5th of 53 | 1171st of 3,080 |
| Severe thunderstorm wind | 419 | 0 | $308M | 3rd of 53 | 2217th of 3,080 |
| Winter storms | 195 | 0 | $23M | 24th of 53 | 1524th of 3,077 |
| Tornadoes | 109 | 13 | $298M | 1st of 53 | 973rd of 3,080 |
| Floods | 87 | 3 | $708M | 9th of 53 | 1850th of 3,080 |
| Extreme cold | 75 | 1 | $80K | 20th of 53 | 647th of 3,076 |
| High wind and dust storms | 56 | 1 | $5.5M | 41st of 53 | 1501st of 3,080 |
| Drought | 11 | 0 | – | 41st of 53 | 2151st of 3,063 |
| Heavy rain | 6 | 0 | – | 4th of 53 | 1575th of 3,080 |
| Heat | 4 | 0 | – | 11th of 53 | 2154th of 3,076 |
| Lightning | 4 | 1 | $42K | 14th of 53 | 1830th of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Cass County record: every hazard by year and month, the deadliest events and FEMA's declarations.