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

Tama County Disaster Risk

Tama County, Iowa

FEMA Risk Rating

Relatively Low

National Percentile

45th

of 3,144 counties

State Rank

#31

of 99 (1 = highest risk)

Flood Risk

42th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 42% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 65% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 57% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 22% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 17% of US counties

Risk Overview

About Natural Disaster Risk in Tama County, Iowa

Tama County risk moderately above average

Tama County's composite risk score of 45.32 with a Relatively Low rating exceeds the national average by roughly 14 percent. This reflects moderate, manageable exposure to natural hazards overall.

Tama sits near Iowa's middle risk level

At 45.32, Tama County modestly exceeds Iowa's state average of 39.68, placing it slightly above the middle of the state's risk spectrum. Multiple Iowa counties rank both lower and considerably higher.

Tama occupies the moderate-risk zone

Tama County's 45.32 score falls between safer neighbors like Shelby County (22.77) and higher-risk Story County (68.83). It represents a middle ground in its region's risk profile.

Wildfire and tornado risks are elevated

Wildfire risk (65.49) stands unusually high for central Iowa, while tornado risk (57.41) remains a consistent threat. Flood risk (42.40) and earthquake risk (21.72) contribute to a diversified hazard profile.

Prepare for wind and fire threats

Tama County residents should verify their homeowner's policies cover tornadoes, wind, and hail, and consider defensible space around homes given wildfire exposure. Annual policy reviews ensure coverage keeps pace with home value.

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

Preparedness Guide

What to Prepare for in Tama County

Top Hazards by Exposure

  1. #1
    WildfirePrepare
    65th percentile
  2. #2
    TornadoPrepare
    57th percentile
  3. #3
    FloodPrepare
    42th percentile

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

Risk Advisory: Tama County

Risk Verdict

At the 45th percentile nationally, Tama County experiences a manageable level of natural hazard risk that falls below the U.S. median. The 45th percentile national ranking is one lens; Tama County residents also benefit from reviewing which specific hazard types drive the county's composite score and preparing accordingly.

Hazard Breakdown

Wildfire risk is Tama County's dominant natural hazard, ranked at the 65th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 57th percentile nationally. Additional tracked hazards include flood (42th percentile), earthquake (22th percentile), hurricane (17th percentile).

Preparedness Context

Wildfire ranks as Tama County's primary hazard at the 65th percentile nationally. For Tama 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. The county's tornado exposure at the 57th percentile nationally complements the wildfire risk — saturating rain after burn scarring often triggers secondary flood and debris flow events. Tama 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

Tama County falls 5.6 points above Iowa's typical county risk level, which means the hazard environment here is notably more demanding than the state baseline.

Is your household prepared for Tama 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 Tama County, IA?
Tama County has a FEMA National Risk Index rating of Relatively Low, placing it in the 45th 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 Tama County?
Tama County is evaluated for five major natural hazard types: wildfire (65th percentile), tornado (57th percentile), flooding (42th percentile), earthquake (22th percentile), hurricane (17th percentile). The highest-risk hazard is wildfire at the 65th 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 Tama County risk compare to the Iowa average?
Tama County's composite risk percentile is 45th, compared to the Iowa state average of 40th percentile. The state's overall risk rating is Very Low. This means Tama County faces higher natural disaster risk than the typical county in Iowa.
Is Tama County at risk for wildfire?
Yes, Tama County's wildfire risk is at the 65th percentile nationally. This is above the national median. For flooding specifically, Tama County is at the 42th 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 Tama County higher risk than average?
Tama County's composite risk score of 45th percentile is above the Iowa state average of 40th percentile. This elevated risk is driven by wildfire exposure (65th percentile), along with tornado 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.