Rock County, Minnesota: hazard risk
FEMA rates Rock County's overall risk Very Low (score 9.4 of 100, higher than 9% of rated U.S. counties). Its storm record holds 701 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 |
|---|---|---|---|
| Hail | Relatively Moderate | 74.7 | $996K |
| Winter Weather | Relatively Moderate | 65.8 | $160K |
| Drought | Relatively Low | 56.9 | $332K |
| Ice Storm | Relatively Low | 55.0 | $153K |
| Cold Wave | Relatively Low | 37.8 | $865K |
| Tornado | Relatively Low | 36.2 | $1.0M |
| Strong Wind | Relatively Low | 22.0 | $290K |
| Heat Wave | Very Low | 22.2 | $107K |
| Landslide | Very Low | 19.1 | $154 |
| Riverine Flooding | Very Low | 15.1 | $2.6M |
| Wildfire | Very Low | 7.5 | $3K |
| Earthquake | Very Low | 7.0 | $10K |
| Lightning | Very Low | 1.4 | $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. |
|---|---|---|---|---|---|
| Winter storms | 196 | 4 | $16M | 3rd of 87 | 187th of 3,077 |
| Hail | 138 | 0 | $158K | 15th of 87 | 623rd of 3,080 |
| Severe thunderstorm wind | 130 | 0 | $4.7M | 18th of 87 | 1777th of 3,080 |
| Floods | 68 | 0 | $16M | 5th of 87 | 738th of 3,080 |
| High wind and dust storms | 45 | 1 | $79K | 1st of 87 | 398th of 3,080 |
| Drought | 37 | 0 | $6.0M | 1st of 87 | 533rd of 3,063 |
| Extreme cold | 37 | 0 | – | 13th of 87 | 250th of 3,076 |
| Heat | 24 | 0 | $33K | 2nd of 87 | 529th of 3,076 |
| Tornadoes | 15 | 0 | $4.7M | 37th of 87 | 1487th of 3,080 |
| Heavy rain | 6 | 0 | – | 48th of 87 | 1458th of 3,080 |
| Lightning | 1 | 0 | $18K | 43rd of 87 | 1885th 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 Rock County record: every hazard by year and month, the deadliest events and FEMA's declarations.