FEMA Records
2
Total declarations
Maryland · FEMA + NOAA + National Risk Index
St. Mary's County, MD
2 FEMA disaster declarations (2021–2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Winter Storm.
- 2
- FEMA declarations
- 1
- Major disasters
- 43
- NRI risk · Very Low
- Winter Storm
- Top hazard
The verdict
St. Mary's County ranks safer than 43% of U.S. counties for FEMA-modeled hazard risk, with more federally declared disasters than 22% of the 2,791 counties FEMA tracks. FEMA rates the county's overall risk as Very Low, based on 2 federal disaster declarations recorded since 2021, most often winter storm, 48% below the national county average of 4.
- Safer than 43%
- of U.S. counties for FEMA National Risk Index score
- Very Low
- FEMA National Risk Index rating
- 2
- FEMA declarations vs 4 national county avg
- 1
- winter 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. Mary's County compare?
St. Mary's County vs. every U.S. county
FEMA disaster declarations, all-time
2 22nd percentile higher than 22% 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. Mary's County's FEMA Risk Index score
FEMA National Risk Index composite score vs. the Maryland county average
How disaster-prone is St. Mary's County?
Declaration frequency
St. Mary's County, Maryland has recorded 2 FEMA disaster declarations between 2021 and 2026, of which 1 were classified as Major Disaster declarations (DR) requiring federal individual and public assistance. That puts the county's average at 0.4 declarations per year across a 5-year record, or roughly 78% above the Maryland county average of 1.1 and 48% below the national county average of 3.8. The dominant disaster type on record is Winter Storm, with 1 of 2 declarations falling under this category.
FEMA National Risk Index
FEMA's data shows an elevated National Risk Index composite of 42.6/100 for this county (Very Low rating). Expected Annual Loss comes in at Relatively Low (roughly $22.5M in annualized losses). Social vulnerability (Very Low) and community resilience (Very High) both factor into how that raw exposure plays out on the ground. Among the 18 modeled hazards, Hurricane carries the county's highest rating, a mid-range Relatively Moderate.
Flood exposure & the bottom line
Taken together, St. Mary's 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. Maryland Avg
+78%
State avg: 1.1
vs. National Avg
-48%
National avg: 3.8
Avg Per Year
0.4
Over 5 years
FEMA NRI 8-hazard radar - St. Mary's County
How to read this radar
The radar plots St. Mary's 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
24037
MD state code
Source: FEMA National Risk Index FEMA National Risk Index Per-county per-hazard ratings, 2023 release
Disaster Types
Winter Storm 1
Hurricane 1
Declaration Types
What DR / EM / FM mean
FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).
Emergency - 1 50.0%
of all 2 declarations
Major Disaster - 1 50.0%
of all 2 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2026 | 1 | |
| 2021 | 1 | |
Disaster Declarations
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 3634 | SEVERE WINTER STORM | EM | Winter Storm | 2026-01-24 |
| 4583 | TROPICAL STORM ISAIAS | DR | Hurricane | 2021-02-04 |
Storm Events in Maryland
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| Thunderstorm Wind | 4,749 | 7 | 49 | $116.0M |
| Winter Weather | 1,660 | 4 | 26 | $95.0K |
| Flood | 1,193 | 1 | 0 | $1.4M |
| Flash Flood | 979 | 10 | 4 | $96.3M |
| Dense Fog | 529 | 0 | 0 | $0 |
Source: NOAA Storm Events Database NOAA Storm Events Database State-level aggregated data, 2015–2025
FEMA National Risk Index
Overall Risk
Very Low
Score: 42.6/100
Expected Annual Loss
Relatively Low
$22.5M/year
Social Vulnerability
Very Low
Community Resilience
Very High
Hazard Risk Breakdown
Hurricane Relatively Moderate
Drought Relatively Moderate
Heat Wave Relatively Low
Strong Wind Relatively Moderate
Coastal Flooding Relatively Moderate
Wildfire Very Low
Winter Weather Relatively Low
Earthquake Very Low
Lightning Relatively Low
Ice Storm Relatively Low
Landslide Very Low
Tornado Relatively Low
Hail Relatively Low
Cold Wave Relatively 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 Maryland
Disaster Preparedness Guides
Related
Frequently Asked Questions
How many natural disasters has St. Mary's County, Maryland had?
St. Mary's County, Maryland has received 2 FEMA disaster declarations from 2021 to 2026. Of these, 1 were major disaster declarations.
What is the most common disaster type in St. Mary's County?
The most common disaster type in St. Mary's County is Winter Storm, with 1 declaration. Other disaster types include Hurricane (1).
How does St. Mary's County's disaster risk compare to the Maryland average?
St. Mary's County has 2 disaster declarations, which is 78% higher than the Maryland county average of 1.1 declarations. Compared to the national county average of 3.8, it is 48% lower.
How many major FEMA disaster declarations has St. Mary's County received?
St. Mary's County has received 1 major disaster declaration, representing 50% of all 2 disaster declarations. Major disaster declarations typically involve significant damage requiring federal assistance.
What types of storms are most common in Maryland?
The most common storm types in Maryland include Thunderstorm Wind (4,749 events), Winter Weather (1,660 events), Flood (1,193 events). NOAA storm event data covers severe weather from 2015 to 2025.
What was the worst year for disasters in St. Mary's County?
The most active year for disaster declarations in St. Mary's County was 2021, with 1 declaration. The county has FEMA disaster data spanning 2021 to 2026.
What is the overall disaster risk level for St. Mary's County?
St. Mary's County's 2 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. Mary's County?
According to the FEMA National Risk Index, St. Mary's County, Maryland has an overall risk score of 42.6 out of 100 (Very Low). The county's social vulnerability rating is Very Low and community resilience is Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $22.5M in annualized losses.
Which natural hazard poses the greatest risk to St. Mary's County?
Based on FEMA NRI data, the highest-risk natural hazard in St. Mary's County is Hurricane (risk rating: Relatively Moderate). Other significant hazards include Drought (Relatively Moderate) and Heat Wave (Relatively Low). 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. Mary's County
St. Mary's County, MD runs 78% above the Maryland county average for federal disaster declarations (2 vs 1), a low historical load overall.
- Its most common federal declaration type is emergency (1 of 2) - know the hazards most likely here before they happen. Maryland 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.