Natural disaster risk in Will County, Illinois
Illinois · population 696,135 · FIPS 17197
Overall: relatively high risk
Will County has a composite risk score of 97.3 out of 100 — higher than 97% of US counties. It ranks 3 of 102 in Illinois (1 = highest risk). Its highest-rated hazards are cold wave, tornado, inland (riverine) flooding.
Drought now: No: no drought or dryness
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Will County is in drought or abnormally dry (none of D0 to D4). That has been so for 4 weeks in a row.
Drought in Will County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Relatively high 97.3 |
| Expected annual loss About $348.1 million a year, on average, across all 18 hazards. |
Relatively high 98.2 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Very low 13.4 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Very high 92.4 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Will County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Cold wave | Very high 99 |
| Tornado | Very high 99 |
| Inland (riverine) flooding | Relatively high 97 |
| Winter weather | Relatively high 92 |
| Lightning | Relatively high 89 |
| Heat wave | Relatively moderate 95 |
| Earthquake | Relatively moderate 90 |
| Ice storm | Relatively moderate 80 |
| Hail | Relatively low 60 |
| Strong wind | Relatively low 50 |
| Drought | Relatively low 38 |
| Landslide | Very low 59 |
| Wildfire | Very low 56 |
| Hurricane | Very low 26 |
| Avalanche | Not applicable |
| Coastal flooding | Not applicable |
| Tsunami | Not applicable |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Will County
Federal declarations that designated Will County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. Will County has been named in 1 FEMA declaration since 1 Jan 2024. The latest is DR-4819-IL (Severe Storms, Tornadoes, Straight-Line Winds, and Floodng), declared 20 Sep 2024.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4819-IL | Major disaster | Severe Storms, Tornadoes, Straight-Line Winds, and Floodng | 20 Sep 2024 | Yes |
All FEMA declarations in Illinois, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in Will County, Illinois?
FEMA's National Risk Index rates the overall risk in Will County as relatively high, with a score of 97.3 out of 100 (higher than 97% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Will County?
The hazards rated highest for Will County are cold wave (very high), tornado (very high), inland (riverine) flooding (relatively high).
What is the flood risk in Will County?
FEMA rates inland (river and rain) flooding risk in Will County as relatively high. For a specific property, check the FEMA flood map and your local floodplain office.
Has Will County had a FEMA disaster declaration?
Yes. Will County has been named in 1 FEMA declaration since 1 Jan 2024. The latest is DR-4819-IL (Severe Storms, Tornadoes, Straight-Line Winds, and Floodng), declared 20 Sep 2024.
Is Will County in a drought?
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Will County is in drought or abnormally dry (none of D0 to D4). That has been so for 4 weeks in a row.
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