LaMoure County, North Dakota Natural Disaster Risk
FEMA National Risk Index assessment · ND
Very LowComposite Risk Score
National percentile: 11th
LaMoure County faces very low composite natural disaster risk (NRI Risk Index score 10.9, 11th national percentile), driven primarily by winter weather and cold wave exposure. Expected annual loss across all 18 hazard types is $6M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
Overall natural disaster risk in LaMoure County is very low, with a National Risk Index score of 10.9 out of 100 — placing it in the 11th national percentile and among the lowest-risk counties in the country. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Risk here concentrates in winter weather (heavy snow, blizzards, and hazardous winter conditions) at Medium risk — $192K in expected annual loss and about 22.84 events per year; cold wave (prolonged spells of dangerously low temperatures) at Medium risk — $3M in expected annual loss and about 17.21 events per year; and hail (ice stones from severe thunderstorms that damage property and crops) at Low risk — $648K in expected annual loss and about 3.17 events per year. Across all hazards, FEMA estimates $6M in expected annual loss for a population of 4K.
Beyond physical exposure, LaMoure County has a low social vulnerability rating (how susceptible the population is to harm) and a medium community resilience rating (its capacity to prepare for and recover from disasters). Both measures sit toward the lower end, indicating relatively modest population sensitivity.
The county's disaster history tells the same story: LaMoure County has received 33 federal disaster declarations since 1966, including 18 for flood events and 10 for severe storm events. The most recent was Severe Winter Storm and Straight-Line Winds (winter storm), declared in February 2024.
Among 53 North Dakota counties, LaMoure County ranks #31 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Winter Weather | Medium | 22.84 / yr | $192K |
| Cold Wave | Medium | 17.21 / yr | $3M |
| Hail | Low | 3.17 / yr | $648K |
| Ice Storm | Medium | 0.84 / yr | $157K |
| Strong Wind | Medium | 1.75 / yr | $812K |
| Wildfire | Very Low | 0.00 / yr | $25K |
| Landslide | Very Low | 0.12 / yr | $173 |
| Drought | Very Low | 3.76 / yr | $7K |
| Tornado | Very Low | 0.51 / yr | $265K |
| Heat Wave | Very Low | 2.00 / yr | $25K |
| Riverine Flood | Very Low | 0.39 / yr | $876K |
| Earthquake | Very Low | 0.00 / yr | $3K |
| Lightning | Very Low | 31.06 / yr | $6K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Disaster History
LaMoure County has received 33 federal disaster declarations since 1966, most recently Severe Winter Storm and Straight-Line Winds in February 2024. Most frequent causes: Flood (18), Severe Storm (10), Biological (2).
| Declared | Type | Disaster |
|---|---|---|
| February 2024 | Winter Storm | Severe Winter Storm and Straight-Line Winds |
| July 2023 | Flood | Flooding |
| July 2022 | Severe Storm | Severe Winter Storm and Flooding |
| September 2021 | Severe Storm | Severe Storm, Straight-Line Winds, and Flooding |
| July 2020 | Flood | Flooding |
| April 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| January 2020 | Flood | Flooding |
| June 2019 | Flood | Flooding |
| May 2011 | Flood | Flooding |
Showing the 10 most recent of 33 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for LaMoure County?
LaMoure County has a composite FEMA National Risk Index score of 10.9 out of 100, placing it in the Very Low category and the 11th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in LaMoure County?
The three highest-rated hazards are Winter Weather (Medium, $192K EAL), Cold Wave (Medium, $3M EAL), Hail (Low, $648K EAL). These account for most of the county's expected annual losses.
How does LaMoure County compare to other North Dakota counties?
LaMoure County ranks #31 of 53 North Dakota counties for overall natural disaster risk, with a very low rating.
How many federally declared disasters has LaMoure County had?
FEMA records 33 federal disaster declarations for LaMoure County since 1966, most often 18 for flood events and 10 for severe storm events. The most recent was Severe Winter Storm and Straight-Line Winds, declared in February 2024.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. LaMoure County's $6M EAL is a statistical average, not a guarantee for any specific year or address.