FEMA Records
3
Total declarations
Missouri · FEMA + NOAA + National Risk Index
St. Louis County, MO
3 FEMA disaster declarations (2022–2025), with a FEMA National Risk Index rating of Relatively High. Most common hazard: Severe Storm.
- 3
- FEMA declarations
- 3
- Major disasters
- 99
- NRI risk · Relatively High
- Severe Storm
- Top hazard
The verdict
St. Louis County ranks in the riskiest 1% of U.S. counties for FEMA-modeled hazard risk, with more federally declared disasters than 41% of the 2,791 counties FEMA tracks. FEMA rates the county's overall risk as Relatively High, based on 3 federal disaster declarations recorded since 2022, most often severe storm, 22% below the national county average of 4.
- Riskiest 1%
- of U.S. counties for FEMA National Risk Index score
- Relatively High
- FEMA National Risk Index rating
- 3
- FEMA declarations vs 4 national county avg
- 2
- severe storm declarations, the most common hazard here
FEMA's National Risk Index score reflects expected annual loss, social vulnerability, and community resilience; the declaration count above reflects only Presidentially declared disasters, not every hazard event.
How does St. Louis County compare?
St. Louis County vs. every U.S. county
FEMA disaster declarations, all-time
3 41st percentile higher than 41% of 2,791 counties
Each bar is a band; taller bars hold more counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source FEMA Disaster Declarations Summaries v2 · 2026-07-25
St. Louis County's FEMA Risk Index score
FEMA National Risk Index composite score vs. the Missouri county average
How disaster-prone is St. Louis County?
Declaration frequency
St. Louis County, Missouri has recorded 3 FEMA disaster declarations between 2022 and 2025, of which 3 were classified as Major Disaster declarations (DR) requiring federal individual and public assistance. That puts the county's average at 1.0 declarations per year across a 3-year record, or roughly 46% above the Missouri county average of 2.0 and 22% below the national county average of 3.8. The dominant disaster type on record is Severe Storm, with 2 of 3 declarations falling under this category.
FEMA National Risk Index
This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 99.3/100 (Relatively High). Expected Annual Loss is rated Relatively High (roughly $752.7M in annualized losses). Social vulnerability reads Relatively Low and community resilience Relatively High, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Heat Wave stands out as the sharpest exposure here, rated Very High.
Flood exposure & the bottom line
Taken together, St. Louis County reads as low relative risk on this historical lens, fewer federally recognized disasters than a typical U.S. county.
Risk Assessment
Risk Level
Low
vs. Missouri Avg
+46%
State avg: 2.0
vs. National Avg
-22%
National avg: 3.8
Avg Per Year
1.0
Over 3 years
FEMA NRI 8-hazard radar - St. Louis County
How to read this radar
The radar plots St. Louis County's relative exposure to the eight headline natural hazards used by the FEMA National Risk Index. Each axis is the qualitative NRI risk rating (Very Low through Very High) re-expressed on a 0-100 scale so that the polygon shape lets you compare a county against another at a glance. A rounder polygon means broad multi-hazard exposure; a spiky polygon means one or two dominant hazards drive most of the modeled risk.
NRI Source
FEMA 2023
Latest NRI release
County FIPS
29189
MO state code
Source: FEMA National Risk Index FEMA National Risk Index Per-county per-hazard ratings, 2023 release
Disaster Types
Severe Storm 2
Flood 1
Declaration Types
What DR / EM / FM mean
FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).
Major Disaster - 3 100.0%
of all 3 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2025 | 2 | |
| 2022 | 1 | |
Disaster Declarations
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 4877 | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING | DR | Severe Storm | 2025-06-09 |
| 4867 | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND WILDFIRES | DR | Severe Storm | 2025-05-21 |
| 4665 | SEVERE STORMS AND FLOODING | DR | Flood | 2022-08-08 |
Storm Events in Missouri
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| Thunderstorm Wind | 7,602 | 32 | 65 | $81.5M |
| Hail | 5,142 | 0 | 1 | $94.3M |
| Flash Flood | 2,757 | 52 | 14 | $559.8M |
| Flood | 2,110 | 26 | 7 | $304.8M |
| Drought | 1,433 | 0 | 700 | $106.4M |
Source: NOAA Storm Events Database NOAA Storm Events Database State-level aggregated data, 2015–2025
FEMA National Risk Index
Overall Risk
Relatively High
Score: 99.3/100
Expected Annual Loss
Relatively High
$752.7M/year
Social Vulnerability
Relatively Low
Community Resilience
Relatively High
Hazard Risk Breakdown
Heat Wave Very High
Hail Very High
Lightning Very High
Cold Wave Very High
Earthquake Relatively High
Ice Storm Very High
Winter Weather Very High
Tornado Relatively High
Landslide Relatively Moderate
Strong Wind Relatively High
Wildfire Very Low
Hurricane Very Low
Drought Very Low
Source: FEMA National Risk Index (NRI) FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri
Counties with Similar Risk in Missouri
Disaster Preparedness Guides
Related
Frequently Asked Questions
How many natural disasters has St. Louis County, Missouri had?
St. Louis County, Missouri has received 3 FEMA disaster declarations from 2022 to 2025. Of these, 3 were major disaster declarations.
What is the most common disaster type in St. Louis County?
The most common disaster type in St. Louis County is Severe Storm, with 2 declarations. Other disaster types include Flood (1).
How does St. Louis County's disaster risk compare to the Missouri average?
St. Louis County has 3 disaster declarations, which is 46% higher than the Missouri county average of 2.0 declarations. Compared to the national county average of 3.8, it is 22% lower.
How many major FEMA disaster declarations has St. Louis County received?
St. Louis County has received 3 major disaster declarations, representing 100% of all 3 disaster declarations. Major disaster declarations typically involve significant damage requiring federal assistance.
What types of storms are most common in Missouri?
The most common storm types in Missouri include Thunderstorm Wind (7,602 events), Hail (5,142 events), Flash Flood (2,757 events). NOAA storm event data covers severe weather from 2015 to 2025.
What was the worst year for disasters in St. Louis County?
The most active year for disaster declarations in St. Louis County was 2025, with 2 declarations. The county has FEMA disaster data spanning 2022 to 2025.
What is the overall disaster risk level for St. Louis County?
St. Louis County's 3 FEMA disaster declarations put it in the low-risk band, fewer federally recognized disasters than a typical U.S. county over the same span.
What is the FEMA National Risk Index score for St. Louis County?
According to the FEMA National Risk Index, St. Louis County, Missouri has an overall risk score of 99.3 out of 100 (Relatively High). The county's social vulnerability rating is Relatively Low and community resilience is Relatively High. The Expected Annual Loss (EAL) score is Relatively High, representing $752.7M in annualized losses.
Which natural hazard poses the greatest risk to St. Louis County?
Based on FEMA NRI data, the highest-risk natural hazard in St. Louis County is Heat Wave (risk rating: Very High). Other significant hazards include Hail (Very High) and Lightning (Very High). These scores are based on FEMA's analysis of historical event frequency, exposed assets, and community vulnerability.
Data Sources & Methodology
Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.
Storm event data is sourced from the NOAA Storm Events Database (2015–2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.
This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.
What this means for St. Louis County
St. Louis County, MO runs 46% above the Missouri county average for federal disaster declarations (3 vs 2), a low historical load overall.
- Its most common federal declaration type is major disaster (3 of 3) - know the hazards most likely here before they happen. Missouri overview
- See how this county ranks against the rest of the country for disaster frequency. Most-disaster rankings
- Read how to read FEMA declarations, NRI risk scores, and what they do and don't tell you. Disaster-data guide
Historical declaration counts describe past federal response, not a forecast. For current threats, follow the National Weather Service and local officials; in an emergency call 911.
According to the Federal Emergency Management Agency, this profile draws on 2,791 tracked U.S. counties in FEMA's Disaster Declarations Summaries dataset, refreshed as of 2026-07-25. Read our methodology - how this data is sourced, computed, and verified.
All federal data sources used on this page
- FEMA OpenFEMA, Disaster Declarations Summaries v2 - all federally-declared disasters for this county. fema.gov/openfema/disaster-declarations
- FEMA National Risk Index (NRI) - per-county per-hazard risk ratings and expected annual loss. hazards.fema.gov/nri
- NOAA NCEI Storm Events Database - state-level storm/severe-weather event records, 2015–2025. ncdc.noaa.gov/stormevents
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial
Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →
Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. This page draws directly on FEMA federal disaster data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, or report a data error.