riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Nelson County Disaster Risk

Nelson County, North Dakota

FEMA Risk Rating

Very Low

National Percentile

8th

of 3,144 counties

State Rank

#36

of 53 (1 = highest risk)

Flood Risk

4th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 4% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 68% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 22% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 2% of US counties

Risk Overview

About Natural Disaster Risk in Nelson County, North Dakota

Nelson ranks among America's safest counties

Nelson County's composite risk score of 7.92 is exceptionally low, placing it in the Very Low category well below the vast majority of U.S. counties. This outstanding resilience reflects minimal to low hazard exposure across nearly all disaster types.

Nelson is North Dakota's safest county

At 7.92, Nelson's score is the lowest in North Dakota and dramatically outperforms the state average of 22.19. Nelson stands as the state's most resilient county across all natural disaster metrics.

Significantly safer than surrounding counties

Nelson's 7.92 score is substantially lower than McHenry (11.74), Mercer (13.87), and all other nearby counties, making it the region's clear safest location. Its advantage over McLean (43.10) and Morton (49.59) is dramatic.

Wildfire is minimal concern; tornado secondary

Wildfire risk reaches 67.81 in Nelson—the county's only notable hazard—while tornado risk is low at 21.53. Flood risk is exceptionally modest at 4.26, and earthquake risk is nearly negligible at 1.59.

Maintain basic wildfire-aware coverage

While Nelson's overall risk is minimal, ensure your homeowners policy includes wildfire coverage as a precaution during fire season. Standard disaster preparedness—emergency supplies and alert sign-up—remains advisable.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Nelson County

Top Hazards by Exposure

  1. #1
    WildfirePrepare
    68th percentile
  2. #2
    TornadoPrepare
    22th percentile
  3. #3
    FloodPrepare
    4th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Nelson County

Risk Verdict

Compared to the nation's 3,144 counties, Nelson County ranks at the 8th percentile for natural disaster risk — toward the safer end of the spectrum. Residents of Nelson County can use the 8th percentile ranking as a baseline, while recognizing that individual properties may still lie in specific hazard zones that differ from the county average.

Hazard Breakdown

Wildfire risk is Nelson County's dominant natural hazard, ranked at the 68th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 22th percentile nationally. Additional tracked hazards include flood (4th percentile), earthquake (2th percentile).

Preparedness Context

Nelson County sits at the 68th percentile for wildfire exposure. Signing up for Nelson County's county emergency alert system and knowing the pre-planned evacuation route before conditions deteriorate are the two highest-value preparedness actions for residents here. A secondary tornado exposure at the 22th percentile nationally means Nelson County residents face hazards from two distinct natural peril categories during different seasons. In Nelson County, wildfire smoke often precedes the flame front by hours or days; households benefit from tracking EPA's AirNow.gov and having HEPA air filtration available as a first line of indoor protection when air quality alerts are issued.

Regional Context

At 14.3 points below the North Dakota state average, Nelson County is among the lower-risk counties in the state for natural disaster exposure.

Is your household prepared for Nelson County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Nelson County, ND?
Nelson County has a FEMA National Risk Index rating of Very Low, placing it in the 8th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Nelson County?
Nelson County is evaluated for five major natural hazard types: wildfire (68th percentile), tornado (22th percentile), flooding (4th percentile), earthquake (2th percentile). The highest-risk hazard is wildfire at the 68th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Nelson County risk compare to the North Dakota average?
Nelson County's composite risk percentile is 8th, compared to the North Dakota state average of 22th percentile. The state's overall risk rating is Very Low. This means Nelson County faces lower natural disaster risk than the typical county in North Dakota.
Is Nelson County at risk for wildfire?
Yes, Nelson County's wildfire risk is at the 68th percentile nationally. This is above the national median. For flooding specifically, Nelson County is at the 4th percentile.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Is Nelson County a safe place to live?
Nelson County's composite risk score of 8th percentile is below the North Dakota state average of 22th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is wildfire at the 68th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.