Lake County, Michigan Natural Disaster Risk
FEMA National Risk Index assessment · MI
Very LowComposite Risk Score
National percentile: 22th
Lake County faces very low composite natural disaster risk (NRI Risk Index score 22.0, 22th national percentile), driven primarily by winter weather and strong wind exposure. Expected annual loss across all 18 hazard types is $5M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
Lake County carries a very low composite natural disaster risk, with a National Risk Index score of 22.0 out of 100 — placing it in the 22nd national percentile and among the lowest-risk counties in the country. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Risk here concentrates in winter weather (heavy snow, blizzards, and hazardous winter conditions) at Medium risk — $167K in expected annual loss and about 24.95 events per year; strong wind (damaging straight-line winds outside of tornadoes and hurricanes) at Medium risk — $819K in expected annual loss and about 1.31 events per year; and landslide (downhill movement of rock, soil, and debris on unstable slopes) at Low risk — $4K in expected annual loss and about 0.20 events per year. Across all hazards, FEMA estimates $5M in expected annual loss for a population of 12K.
Beyond physical exposure, Lake County has a very high social vulnerability rating (how susceptible the population is to harm) and a low community resilience rating (its capacity to prepare for and recover from disasters). That combination — a more vulnerable population with limited resilience — can amplify the human cost of any given event.
History supports the rating: Lake County has received 8 federal disaster declarations since 1977, including 2 for biological events and 2 for flood events. The most recent was Covid-19 Pandemic (biological), declared in March 2020.
Among 83 Michigan counties, Lake County ranks #67 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Winter Weather | Medium | 24.95 / yr | $167K |
| Strong Wind | Medium | 1.31 / yr | $819K |
| Landslide | Low | 0.20 / yr | $4K |
| Wildfire | Very Low | 0.00 / yr | $21K |
| Riverine Flood | Low | 0.32 / yr | $3M |
| Lightning | Low | 29.62 / yr | $102K |
| Cold Wave | Low | 1.47 / yr | $382K |
| Tornado | Very Low | 0.09 / yr | $213K |
| Heat Wave | Very Low | 1.53 / yr | $47K |
| Ice Storm | Very Low | 0.34 / yr | $12K |
| Hurricane | Very Low | 0.01 / yr | $2K |
| Earthquake | Very Low | 0.00 / yr | $8K |
| Hail | Very Low | 0.89 / yr | $18K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Disaster History
Lake County has received 8 federal disaster declarations since 1977, most recently Covid-19 Pandemic in March 2020. Most frequent causes: Biological (2), Flood (2), Severe Storm (1).
| Declared | Type | Disaster |
|---|---|---|
| March 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| July 2008 | Severe Storm | Severe Storms, Tornadoes, and Flooding |
| September 2005 | Hurricane | Hurricane Katrina Evacuation |
| September 1986 | Flood | Severe Storms & Flooding |
| September 1985 | Flood | Severe Storms and Flooding |
| January 1978 | Snowstorm | Blizzards & Snowstorms |
| March 1977 | Drought | Drought |
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Lake County?
Lake County has a composite FEMA National Risk Index score of 22.0 out of 100, placing it in the Very Low category and the 22th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Lake County?
The three highest-rated hazards are Winter Weather (Medium, $167K EAL), Strong Wind (Medium, $819K EAL), Landslide (Low, $4K EAL). These account for most of the county's expected annual losses.
How does Lake County compare to other Michigan counties?
Lake County ranks #67 of 83 Michigan counties for overall natural disaster risk, with a very low rating.
How many federally declared disasters has Lake County had?
FEMA records 8 federal disaster declarations for Lake County since 1977, most often 2 for biological events and 2 for flood events. The most recent was Covid-19 Pandemic, declared in March 2020.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Lake County's $5M EAL is a statistical average, not a guarantee for any specific year or address.