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

Sheridan County Disaster Risk

Sheridan County, Wyoming

FEMA Risk Rating

Relatively Low

National Percentile

65th

of 3,144 counties

State Rank

#4

of 23 (1 = highest risk)

Flood Risk

74th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 74% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 94% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 22% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 65% of US counties

Risk Overview

About Natural Disaster Risk in Sheridan County, Wyoming

Sheridan's risk outpaces national average

Sheridan County scores 65.20 on the composite risk index, earning a Relatively Low rating but sitting well above the national baseline. This score reflects the county's exposure to multiple hazard types, particularly wildfire and earthquake activity. Understanding your local risk profile is the first step toward meaningful home protection.

Among Wyoming's most exposed counties

Sheridan ranks as one of Wyoming's higher-risk counties with a composite score of 65.20, compared to the state average of 37.86. The county's risk profile is driven primarily by wildfire exposure and moderate earthquake vulnerability. This elevated standing reflects Sheridan's geographic position in northwestern Wyoming's forested terrain.

Sheridan faces distinct wildfire pressure

Compared to neighboring Washakie County (24.36) and Weston County (7.89), Sheridan carries substantially higher overall risk, primarily due to wildfire hazards. Sheridan's wildfire risk score of 93.89 is among the highest in the region, while nearby counties show lower composite exposure. Teton County (70.64) presents the closest risk comparison, sharing similar wildfire and earthquake concerns.

Wildfire and earthquake dominate Sheridan

Wildfire risk in Sheridan County reaches 93.89, reflecting the county's location within forest and grassland fire zones—significantly higher than the state average hazard profile. Earthquake risk scores 65.49, a moderate but consistent threat given the county's proximity to seismic zones. Tornadoes present minimal risk at 22.17, and flood exposure remains moderate at 74.43.

Prioritize wildfire and earthquake coverage

Sheridan residents face above-average wildfire risk and should verify that homeowners insurance covers wildfire damage, as standard policies often exclude it. Earthquake insurance is also worth evaluating given the county's 65.49 earthquake risk score. Consider defensible space clearing, roof maintenance, and professional risk assessments specific to wildfire and seismic hazards.

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

Preparedness Guide

What to Prepare for in Sheridan County

Top Hazards by Exposure

  1. #1
    WildfirePrepare
    94th percentile
  2. #2
    FloodPrepare
    74th percentile
  3. #3
    EarthquakePrepare
    65th percentile

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

Risk Advisory: Sheridan County

Risk Verdict

At the 65th percentile nationally, Sheridan County experiences a manageable level of natural hazard risk that falls below the U.S. median. Sheridan County's risk profile calls for targeted preparedness, focusing on the hazard categories that dominate the county's score.

Hazard Breakdown

Wildfire risk is Sheridan County's dominant natural hazard, ranked at the 94th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 74th percentile nationally. Additional tracked hazards include earthquake (65th percentile), tornado (22th percentile).

Preparedness Context

Wildfire ranks as Sheridan County's primary hazard at the 94th percentile nationally. For Sheridan County households in high-WUI areas, go-bag readiness — the ability to leave within 15 minutes — is more important than shelter-in-place planning for most residential properties. A secondary flood exposure at the 74th percentile nationally means Sheridan County residents face hazards from two distinct natural peril categories during different seasons. Sheridan County county's local emergency management office publishes community-specific wildfire risk assessments and evacuation zone maps; households should review their zone assignment and sign up for zone-specific alerts.

Regional Context

Sheridan County falls 27.3 points above Wyoming's typical county risk level, which means the hazard environment here is notably more demanding than the state baseline.

Is your household prepared for Sheridan 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 Sheridan County, WY?
Sheridan County has a FEMA National Risk Index rating of Relatively Low, placing it in the 65th 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 Sheridan County?
Sheridan County is evaluated for five major natural hazard types: wildfire (94th percentile), flooding (74th percentile), earthquake (65th percentile), tornado (22th percentile). The highest-risk hazard is wildfire at the 94th 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 Sheridan County risk compare to the Wyoming average?
Sheridan County's composite risk percentile is 65th, compared to the Wyoming state average of 38th percentile. The state's overall risk rating is Very Low. This means Sheridan County faces higher natural disaster risk than the typical county in Wyoming.
Is Sheridan County at risk for wildfire?
Yes, Sheridan County's wildfire risk is at the 94th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Sheridan County is at the 74th 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.
Why is Sheridan County higher risk than average?
Sheridan County's composite risk score of 65th percentile is above the Wyoming state average of 38th percentile. This elevated risk is driven by wildfire exposure (94th percentile), along with flooding and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
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.