Lee County, Illinois
Natural disaster risk, federal disaster history and flood insurance facts.
Lee County, Illinois has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 54% of US counties. It ranks 52nd of 102 counties in Illinois. The costliest hazards here are inland flooding, tornadoes and cold waves. FEMA estimates about $21 million a year in expected losses, or roughly $605 per resident. Since 1973 it has been included in 8 federal disaster or emergency declarations for natural events (5 major disasters). The most recent was in September 2019 (severe storms and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (93 policies). Since 1978, federal flood insurance has paid about $730,000 on 142 claims here.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Lee County
- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
- Turn on emergency alerts on your phone and keep a weather radio.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 62.5 | $11M | ||
| Tornado | 69.8 | $3M | ||
| Cold wave | 68.7 | $2M | ||
| Strong wind | 84.6 | $2M | ||
| Drought | 79.6 | $1M | ||
| Hail | 72.4 | $712K | ||
| Earthquake | 49.6 | $308K | ||
| Heat wave | 31.9 | $172K | ||
| Lightning | 28.8 | $119K | ||
| Ice storm | 42.2 | $68K | ||
| Winter weather | 29.6 | $33K | ||
| Hurricane | 15.7 | $5K | ||
| Wildfire | 9.4 | $3K | ||
| Landslide | 37.5 | $635 |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively low and community resilience is very high in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Lee County. 2020s bar runs to November 2026.
By type
Most recent
Illinois also had 2 statewide declarations that did not name single counties.
Storm history since 1956
Tornado risk by county ›The National Weather Service has logged 391 storm reports in Lee County since 1956, with 0 deaths and 15 injuries and about $3.3 million in reported damage. The strongest on record here was an EF2 tornado on June 22, 2015 near Maytown.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Jun 22, 2015 | EF2 | Maytown | 7 / 0 |
| Aug 15, 1958 | F2 | – | 0 / 0 |
| Apr 6, 1972 | F2 | – | 6 / 0 |
| Apr 21, 1967 | F2 | – | 0 / 0 |
| Aug 30, 1956 | F2 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Apr 9, 2015 | Tornado | Franklin Grove | $1M |
| Jun 22, 2015 | Tornado | Maytown | $1M |
| Aug 15, 1958 | Tornado | – | $250K |
| Apr 21, 1967 | Tornado | – | $250K |
| Apr 6, 1972 | Tornado | – | $250K |
| Oct 26, 2010 | Tornado | Ashton | $100K |
Source: NOAA Storm Events Database, county-based reports through Jul 3, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Flood insurance in Lee County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Lee County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 14,995 housing units.
Compare in Illinois
All 102 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Cook County | Inland flooding | |
| DuPage County | Inland flooding | |
| Lake County | Inland flooding | |
| Will County | Inland flooding | |
| Kane County | Inland flooding | |
| McHenry County | Inland flooding | |
| Winnebago County | Inland flooding | |
| Madison County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| LaSalle County | 18 | |
| DeKalb County | 10 | |
| Whiteside County | 12 | |
| Ogle County | 12 | |
| Bureau County | 15 |
Common questions about Lee County
What is the biggest natural hazard in Lee County?
Inland flooding has the highest expected yearly losses in Lee County, about $11.2 million a year in FEMA's estimate. Tornado is second at $2.9 million.
How many federal disasters has Lee County had?
Lee County has been included in 8 federal disaster or emergency declarations for natural events since 1973, including 5 major disasters. The most recent was Severe Storms and Flooding in September 2019.
Is Lee County a high-risk place to live?
Its overall rating is Relatively Low, 52nd highest of 102 in Illinois. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Lee County?
Standard home insurance does not cover flooding. About 1 in 167 homes in Lee County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Lee County had?
NOAA records list 39 tornadoes in Lee County since 1950. The strongest was an EF2 tornado on June 22, 2015 near Maytown. The weather service has also logged 115 hail reports and 28 floods here.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.