Marshalltown, IA
Local storm history & FEMA National Risk Index data
Marshalltown is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Marshall County, IA. The county's highest-rated hazards are drought, strong wind, and winter weather.
Storm events near Marshalltown
NOAA-recorded tornado, hail, and flood events within 25 miles of Marshalltown's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Marshalltown itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Marshall County's FEMA National Risk Index scores, covering Marshalltown along with the rest of the county, not a Marshalltown-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 62.1 | Very Low |
| Inland Flooding | 63.1 | Relatively Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 27.5 | Very Low |
| Heat Wave | 10.1 | Very Low |
| Tornado | 82.7 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 41.2 | Relatively Low |
| Drought | 97.9 | Relatively High |
| Hail | 80.9 | Relatively Moderate |
| Hurricane | 15.2 | Very Low |
| Ice Storm | 50.1 | Relatively Low |
| Landslide | 51 | Very Low |
| Lightning | 26.3 | Relatively Low |
| Strong Wind | 86 | Relatively High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 84.7 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Marshall County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Marshall County:
Frequently asked questions
What natural hazards is Marshalltown, IA at risk of?
Marshalltown is rated Relatively Low for overall natural hazard risk by FEMA's National Risk Index — lower risk than most US counties. The highest-rated hazards for Marshall County, where Marshalltown is located, are drought, strong wind, and winter weather.
What is Marshalltown's biggest natural hazard risk?
Drought is the highest-rated hazard for Marshall County, where Marshalltown is located, scoring 97.9 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Marshalltown a high-risk area for natural disasters?
No — Marshalltown carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Marshall County.
Has Marshalltown had tornadoes, hail, or flooding?
NOAA has recorded 20 tornado, 109 hail, 48 inland flooding events within 25 miles of Marshalltown since 2016.