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

Wapello County Disaster Risk

Wapello County, Iowa

FEMA Risk Rating

Relatively Low

National Percentile

65th

of 3,144 counties

State Rank

#10

of 99 (1 = highest risk)

Flood Risk

69th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 69% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 62% of US counties

Tornado

Tornado and severe thunderstorm risk

Moderate

Higher than 82% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 37% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 10% of US counties

Risk Overview

About Natural Disaster Risk in Wapello County, Iowa

Wapello faces elevated natural disaster risk

Wapello County scores 65.33 on the composite risk scale—65% above the national average—placing it in the Relatively Low category but well above typical American exposure. The county experiences notably more frequent severe weather than most U.S. regions.

Among Iowa's higher-risk counties

Wapello ranks significantly above Iowa's state average of 39.68, making it one of the state's more hazard-prone counties. The 65.33 score reflects heightened tornado and flooding vulnerability across the county.

Riskier than most surrounding counties

Wapello's composite score of 65.33 substantially exceeds nearby Van Buren (33.62) and Warren (36.10). Only Washington County (44.18) comes close, yet Wapello still carries 47% greater overall risk.

Tornadoes dominate, floods follow close

Tornado risk reaches 81.77 in Wapello—one of the state's highest—making it the primary hazard threat. Flood risk at 69.31 rounds out the county's top two concerns, both significantly above state averages.

Bundle tornado and flood coverage now

Wapello residents should prioritize comprehensive storm and flood insurance given the county's elevated tornado (81.77) and flood (69.31) scores. Review your policy annually to ensure adequate coverage for wind, hail, and water damage.

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

Preparedness Guide

What to Prepare for in Wapello County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    82th percentile
  2. #2
    FloodPrepare
    69th percentile
  3. #3
    WildfirePrepare
    62th percentile

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

Risk Advisory: Wapello County

Risk Verdict

Wapello County sits below the national average for natural disaster exposure, ranking at the 65th percentile across all U.S. counties. Understanding the specific hazards behind Wapello County's ranking helps residents prioritize where to direct emergency planning efforts.

Hazard Breakdown

Tornado risk is Wapello County's dominant natural hazard, ranked at the 82th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 69th percentile nationally. Additional tracked hazards include wildfire (62th percentile), earthquake (37th percentile), hurricane (10th percentile).

Preparedness Context

Ranked at the 82th percentile nationally for tornado risk, Wapello County is in a zone where storm shelters have the highest per-dollar protective value of any mitigation investment. Wapello County's county shelter map is typically available through the local emergency management office. The secondary flood hazard at the 69th percentile nationally adds seasonal complexity to Wapello County's preparedness calendar, since flood and tornado risk often peak at different points in the year. Wapello County residents can check the county's emergency management website for community shelter locations nearest their address — a step worth completing now, not during a warning.

Regional Context

A composite score 25.7 points above the Iowa state average puts Wapello County in a higher-risk category than most counties in the state.

Is your household prepared for Wapello 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 Wapello County, IA?
Wapello 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 Wapello County?
Wapello County is evaluated for five major natural hazard types: tornado (82th percentile), flooding (69th percentile), wildfire (62th percentile), earthquake (37th percentile), hurricane (10th percentile). The highest-risk hazard is tornado at the 82th 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 Wapello County risk compare to the Iowa average?
Wapello County's composite risk percentile is 65th, compared to the Iowa state average of 40th percentile. The state's overall risk rating is Very Low. This means Wapello County faces higher natural disaster risk than the typical county in Iowa.
Is Wapello County at risk for tornado?
Yes, Wapello County's tornado risk is at the 82th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Wapello County is at the 69th 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 Wapello County higher risk than average?
Wapello County's composite risk score of 65th percentile is above the Iowa state average of 40th percentile. This elevated risk is driven by tornado exposure (82th percentile), along with flooding and wildfire 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.