Logan County, Illinois Natural Disaster Risk
FEMA National Risk Index assessment · IL
LowComposite Risk Score
National percentile: 58th
Logan County faces low composite natural disaster risk (NRI Risk Index score 58.1, 58th national percentile), driven primarily by drought and strong wind exposure. Expected annual loss across all 18 hazard types is $20M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
FEMA's National Risk Index rates Logan County at low composite risk, with a National Risk Index score of 58.1 out of 100 — placing it in the 58th national percentile and below the national average for natural-disaster risk. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Risk here concentrates in drought (extended dry periods that stress water supplies and agriculture) at High risk — $2M in expected annual loss and about 3.60 events per year; strong wind (damaging straight-line winds outside of tornadoes and hurricanes) at High risk — $2M in expected annual loss and about 5.11 events per year; and cold wave (prolonged spells of dangerously low temperatures) at Medium risk — $3M in expected annual loss and about 3.95 events per year. Across all hazards, FEMA estimates $20M in expected annual loss for a population of 28K.
Beyond physical exposure, Logan County has a low social vulnerability rating (how susceptible the population is to harm) and a very high community resilience rating (its capacity to prepare for and recover from disasters). A less vulnerable population paired with strong resilience helps the community absorb and recover from events.
History supports the rating: Logan County has received 12 federal disaster declarations since 1968, including 2 for severe storm events and 2 for biological events. The most recent was Severe Storms and Flooding (severe storm), declared in August 2023.
Among 102 Illinois counties, Logan County ranks #46 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Drought | High | 3.60 / yr | $2M |
| Strong Wind | High | 5.11 / yr | $2M |
| Cold Wave | Medium | 3.95 / yr | $3M |
| Earthquake | Low | 0.00 / yr | $1M |
| Heat Wave | Low | 7.68 / yr | $1M |
| Hail | Low | 3.43 / yr | $556K |
| Tornado | Medium | 0.70 / yr | $3M |
| Riverine Flood | Low | 1.57 / yr | $7M |
| Ice Storm | Low | 1.83 / yr | $77K |
| Winter Weather | Low | 9.21 / yr | $57K |
| Lightning | Low | 47.26 / yr | $143K |
| Landslide | Very Low | 0.12 / yr | $399 |
| Hurricane | Very Low | 0.01 / yr | $9K |
| Wildfire | Very Low | 0.00 / yr | $598 |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Disaster History
Logan County has received 12 federal disaster declarations since 1968, most recently Severe Storms and Flooding in August 2023. Most frequent causes: Severe Storm (2), Biological (2), Snowstorm (2).
| Declared | Type | Disaster |
|---|---|---|
| August 2023 | Severe Storm | Severe Storms and Flooding |
| March 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| March 2011 | Snowstorm | Severe Winter Storm and Snowstorm |
| February 2007 | Severe Ice Storm | Severe Winter Storm |
| March 2006 | Severe Storm | Tornadoes and Severe Storms |
| September 2005 | Hurricane | Hurricane Katrina Evacuation |
| May 2002 | Tornado | Severe Storms, Tornadoes and Flooding |
| January 1999 | Snowstorm | Il-Winter Storm 1/1/99 |
| June 1974 | Flood | Severe Storms & Flooding |
Showing the 10 most recent of 12 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Logan County?
Logan County has a composite FEMA National Risk Index score of 58.1 out of 100, placing it in the Low category and the 58th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Logan County?
The three highest-rated hazards are Drought (High, $2M EAL), Strong Wind (High, $2M EAL), Cold Wave (Medium, $3M EAL). These account for most of the county's expected annual losses.
How does Logan County compare to other Illinois counties?
Logan County ranks #46 of 102 Illinois counties for overall natural disaster risk, with a low rating.
How many federally declared disasters has Logan County had?
FEMA records 12 federal disaster declarations for Logan County since 1968, most often 2 for severe storm events and 2 for biological events. The most recent was Severe Storms and Flooding, declared in August 2023.
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. Logan County's $20M EAL is a statistical average, not a guarantee for any specific year or address.