Logan County, North Dakota Natural Disaster Risk
FEMA National Risk Index assessment · ND
Very LowComposite Risk Score
National percentile: 10th
Logan County faces very low composite natural disaster risk (NRI Risk Index score 9.9, 10th national percentile), driven primarily by cold wave and winter weather exposure. Expected annual loss across all 18 hazard types is $4M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
FEMA's National Risk Index rates Logan County at very low composite risk, with a National Risk Index score of 9.9 out of 100 — placing it in the 10th 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 cold wave (prolonged spells of dangerously low temperatures) at Medium risk — $2M in expected annual loss and about 16.42 events per year; winter weather (heavy snow, blizzards, and hazardous winter conditions) at Medium risk — $120K in expected annual loss and about 21.53 events per year; and hail (ice stones from severe thunderstorms that damage property and crops) at Low risk — $397K in expected annual loss and about 2.59 events per year. Across all hazards, FEMA estimates $4M in expected annual loss for a population of 2K.
Beyond physical exposure, Logan County has a high 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). That combination — a more vulnerable population with limited resilience — can amplify the human cost of any given event.
The county's disaster history tells the same story: Logan County has received 26 federal disaster declarations since 1969, including 12 for flood events and 9 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, Logan County ranks #33 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Cold Wave | Medium | 16.42 / yr | $2M |
| Winter Weather | Medium | 21.53 / yr | $120K |
| Hail | Low | 2.59 / yr | $397K |
| Wildfire | Very Low | 0.00 / yr | $51K |
| Ice Storm | Low | 0.90 / yr | $37K |
| Strong Wind | Low | 1.64 / yr | $263K |
| Drought | Very Low | 11.08 / yr | $15K |
| Tornado | Very Low | 0.34 / yr | $160K |
| Heat Wave | Very Low | 1.68 / yr | $10K |
| Riverine Flood | Very Low | 0.21 / yr | $677K |
| Landslide | Very Low | 0.15 / yr | $4 |
| Lightning | Very Low | 30.57 / yr | $10K |
| Earthquake | Very Low | 0.00 / yr | $2K |
| 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
Logan County has received 26 federal disaster declarations since 1969, most recently Severe Winter Storm and Straight-Line Winds in February 2024. Most frequent causes: Flood (12), Severe Storm (9), Biological (2).
| Declared | Type | Disaster |
|---|---|---|
| February 2024 | Winter Storm | Severe Winter Storm and Straight-Line Winds |
| July 2022 | Severe Storm | Severe Winter Storm 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 |
| April 2010 | Flood | Flooding |
| February 2010 | Severe Storm | Severe Winter Storm |
Showing the 10 most recent of 26 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Logan County?
Logan County has a composite FEMA National Risk Index score of 9.9 out of 100, placing it in the Very Low category and the 10th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Logan County?
The three highest-rated hazards are Cold Wave (Medium, $2M EAL), Winter Weather (Medium, $120K EAL), Hail (Low, $397K EAL). These account for most of the county's expected annual losses.
How does Logan County compare to other North Dakota counties?
Logan County ranks #33 of 53 North Dakota counties for overall natural disaster risk, with a very low rating.
How many federally declared disasters has Logan County had?
FEMA records 26 federal disaster declarations for Logan County since 1969, most often 12 for flood events and 9 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. Logan County's $4M EAL is a statistical average, not a guarantee for any specific year or address.