Marion, IL
Local storm history & FEMA National Risk Index data
Marion is rated Relatively Moderate for overall natural hazard risk — near the middle compared to other US counties — based on FEMA's National Risk Index for Williamson County, IL. The county's highest-rated hazards are strong wind, earthquake, and heat wave.
Storm events near Marion
NOAA-recorded tornado, hail, and flood events within 25 miles of Marion's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Marion 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 Williamson County's FEMA National Risk Index scores, covering Marion along with the rest of the county, not a Marion-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 14.2 | Very Low |
| Inland Flooding | 69.9 | Relatively Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 96.3 | Relatively Moderate |
| Heat Wave | 90.7 | Relatively Moderate |
| Tornado | 80.3 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 86.9 | Relatively Moderate |
| Drought | 54.2 | Relatively Low |
| Hail | 78.3 | Relatively Moderate |
| Hurricane | 44.5 | Very Low |
| Ice Storm | 81.9 | Relatively Moderate |
| Landslide | 79.3 | Relatively Low |
| Lightning | 67.7 | Relatively Moderate |
| Strong Wind | 99.1 | Very High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 89.8 | Relatively High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Williamson County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Williamson County:
More on Williamson County:
Frequently asked questions
What natural hazards is Marion, IL at risk of?
Marion is rated Relatively Moderate for overall natural hazard risk by FEMA's National Risk Index — near the middle compared to other US counties. The highest-rated hazards for Williamson County, where Marion is located, are strong wind, earthquake, and heat wave.
What is Marion's biggest natural hazard risk?
Strong Wind is the highest-rated hazard for Williamson County, where Marion is located, scoring 99.1 out of 100 on FEMA's National Risk Index (rated "Very High").
Is Marion a high-risk area for natural disasters?
Somewhat — Marion carries near the middle compared to other US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Moderate" for Williamson County.
Has Marion had tornadoes, hail, or flooding?
NOAA has recorded 26 tornado, 140 hail, 148 inland flooding events within 25 miles of Marion since 2016.