Henry County, Missouri: Natural Disaster Risk and History
Henry County, Missouri has a Relatively Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 52.8 out of 100, higher than about 52% of US counties, with ice storms, drought and strong winds scoring highest of its 18 hazards and $14 million a year in expected losses.
OpenFEMA lists 18 federal disaster declarations that included Henry County since 1973, not counting 2 for COVID-19; the latest is DR-4741-MO (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, declared 21 September 2023). NOAA's Storm Prediction Center recorded 19 tornadoes touching Henry County from 1950 to 2025.
Live weather alerts for Missouri All official warnings Latest FEMA declarations
Population 21,887 Buildings worth $5.9 billion Area 740 sq mi Risk rank in Missouri 57 of 115 FIPS 29083
All 18 hazards, highest risk first
FEMA National Risk Index| Hazard | Risk rating | Score | Expected loss a year | How often | Events in record |
|---|---|---|---|---|---|
| Ice storm | Relatively Moderate | 79.6 | $306,596 | about once every 1.9 years | 35 |
| Drought | Relatively Moderate | 78.7 | $677,289 | about 12 a year | 343 |
| Strong wind | Relatively Moderate | 72.2 | $812,594 | about 4.7 a year | 177 |
| Heat wave | Relatively Low | 70.3 | $725,504 | about 14 a year | 165 |
| Hail | Relatively Low | 69.5 | $427,153 | about 6.5 a year | 247 |
| Winter weather | Relatively Moderate | 63.2 | $79,226 | about 9.9 a year | 188 |
| Tornado | Relatively Low | 62.4 | $1.5 million | about once every 2.4 years | 9 |
| Inland flooding | Relatively Low | 61.1 | $7.4 million | about 5.1 a year | 143 |
| Cold wave | Relatively Low | 59.8 | $1.1 million | about 2.2 a year | 41 |
| Earthquake | Very Low | 58.9 | $334,067 | about once every 676 years | — |
| Lightning | Relatively Moderate | 57.5 | $241,308 | about 52 a year | 102,520 strikes |
| Landslide | Very Low | 55.6 | $1,566 | about once every 8.0 years | — |
| Wildfire | Very Low | 43.5 | $25,177 | about once every 877 years | — |
| Hurricane | Very Low | 27.7 | $9,217 | about once every 100 years | 0 |
| Avalanche | Not Applicable | — | — | — | — |
| Coastal flooding | Not Applicable | — | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic activity | Not Applicable | — | — | — | — |
Score: FEMA's percentile among US counties that face the hazard (higher = more risk). Expected loss: FEMA's modelled average yearly loss to buildings, people (as a statistical value) and crops. How often: FEMA's annualised frequency of the hazard in the county; for some hazards it counts event-days, so it is a rough guide, not a forecast. "Not Applicable" means FEMA does not model that hazard here.
Federal disaster declarations 18
Most common: Severe Storm 11, Severe Ice Storm 3, Flood 2, Hurricane 1.
| Decade | Declarations | Incident types |
|---|---|---|
| 1970s | 2 | Drought, Severe Storm |
| 1980s | 1 | Flood |
| 1990s | 2 | Severe Storm, Flood |
| 2000s | 7 | Severe Ice Storm ×3, Severe Storm ×3, Hurricane |
| 2010s | 4 | Severe Storm ×4 |
| 2020s | 2 | Severe Storm ×2 |
The last 10
Widest declarations that included Henry County
- Severe Winter Storm (2011, EM-3317-MO): 115 Missouri counties designated.
- Severe Winter Storm (2009, EM-3303-MO): 115 Missouri counties designated.
- Severe Winter Storms (2007, EM-3281-MO): 115 Missouri counties designated.
Named storms in its declarations: Hurricane Katrina (2005).
Not counted above: 2 COVID-19 ("Biological") declarations — in 2020 every US county was included. Missouri also had 4 statewide declarations with no county list.
Tornado record since 1950 19
| Tornadoes touching the county | 19 |
|---|---|
| Strongest-rated | (E)F4 ×1 |
| Peak month | March (5) |
| Deadliest | 12 Mar 2006, F2, 26 mi path, 1 killed, 13 injured |
| Longest path | 12 Mar 2006, F2, 26 mi path, 1 killed, 13 injured |
| Most recent | 19 May 2025, EF1, 3.5 mi path |
| Deaths / injuries on those paths | 1 / 20 |
| Rating | (E)F0 | (E)F1 | (E)F2 | (E)F3 | (E)F4 | (E)F5 | Unrated |
|---|---|---|---|---|---|---|---|
| Count | 8 | 8 | 2 | 0 | 1 | 0 | 0 |
| Decade | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|---|
| Count | 2 | 0 | 2 | 3 | 1 | 3 | 2 | 6 |
Deaths and injuries are for each tornado's whole path, which can run beyond this county. F-scale ratings before February 2007, Enhanced Fujita (EF) after.
How Henry County compares with its 5 nearest counties
| County | Distance | Overall risk | Score | Top hazard |
|---|---|---|---|---|
| Henry County (this page) | — | Relatively Low | 52.8 | Ice storm |
| St. Clair County | 39 km | Very Low | 25.6 | Drought |
| Johnson County | 40 km | Relatively Low | 54.9 | Cold wave |
| Benton County | 45 km | Relatively Low | 66.8 | Strong wind |
| Bates County | 50 km | Very Low | 30.5 | Strong wind |
| Cass County | 57 km | Relatively Low | 74.9 | Hail |
Nearest by distance between county centres. Every county in Missouri, ranked.
Vulnerability and resilience
| Social vulnerability | Relatively High 72.1 |
|---|---|
| Community resilience | Relatively High 61.5 |
| Community risk factor | 1.33 |
| Expected annual loss, all hazards | $14 million |
FEMA scales expected losses up where social vulnerability is high (people who may find it harder to prepare, evacuate or recover) and down where community resilience is high. A factor above 1 raises the risk score. For social vulnerability a high rating is worse; for resilience a high rating is better.
Prepare for Henry County's main hazards
- Right now: National Weather Service alerts for Missouri · all official warnings on Global Incident Tracker.
- Ice storm: Power outages now · Carbon monoxide in winter
- Drought: Drought monitor for Missouri
- Strong wind: Power outages now
- Your property's flood zone: FEMA Flood Map Service Center ↗ — this page cannot tell you that.
- Official preparedness guidance: Ready.gov ↗ and your county emergency management office.
What this page shows, and what it misses
FEMA's National Risk Index rates a whole county against every other US county; it is a planning-level estimate for nationwide comparison, not a flood-zone map and not a substitute for a local risk assessment or the risk to one home. Declarations are presidential disaster, emergency and fire management declarations that named this county; state declarations and SBA or USDA designations are not included. Tornadoes are counted when the county is one of up to four listed on the track; 670 tornadoes that crossed a state line carry no county list in NOAA's file and are left out.
Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties - v1.20.0 (December 2025). Retrieved from https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services/National_Risk_Index_Counties/FeatureServer/0/query on November 2, 2026, 1:20 PM EST. This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets 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).
Federal Emergency Management Agency (FEMA), OpenFEMA Dataset: Disaster Declarations Summaries - v2, retrieved from https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries on November 2, 2026, 1:21 PM EST. 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).
Tornado records: NOAA/NWS Storm Prediction Center, Severe Weather Database, tornadoes 1950–2025 (https://www.spc.noaa.gov/wcm/data/1950-2025_actual_tornadoes.csv, downloaded 2 November 2026). Public domain; not endorsed by NOAA. Compiled by Global Incident Tracker.
Questions about Henry County
What natural disasters is Henry County, Missouri most at risk from?
Henry County, Missouri has a Relatively Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 52.8 out of 100, higher than about 52% of US counties, with ice storms, drought and strong winds scoring highest of its 18 hazards and $14 million a year in expected losses.
How many federal disaster declarations has Henry County had?
OpenFEMA lists 18 federal disaster declarations that included Henry County since 1973, not counting 2 for COVID-19; the latest is DR-4741-MO (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, declared 21 September 2023). Another 4 Missouri declarations were made statewide without a county list.
How many tornadoes have hit Henry County?
NOAA's Storm Prediction Center recorded 19 tornadoes touching Henry County from 1950 to 2025. The deadliest: 12 Mar 2006, F2, 26 mi path, 1 killed, 13 injured (deaths and injuries are for the whole path).
Is the National Risk Index a flood zone map?
No. The National Risk Index is a planning-level estimate for a whole county, built for nationwide comparison. It does not tell you the flood zone or the risk of a single property: for that, look up the address on FEMA's Flood Map Service Center (msc.fema.gov) and ask your local floodplain manager.