PlainHazard

If you are in immediate danger, call 911.

The data below is historical (NOAA Storm Events / FEMA), not a live alert. For current warnings and evacuation orders, check the National Weather Service, Ready.gov, or FEMA.gov.

Minnesota · FEMA + NOAA + National Risk Index

Martin County, MN

15 FEMA disaster declarations (1965-2024), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

15
FEMA declarations
12
Major disasters
45
NRI risk · Relatively Low
Flood
Top hazard

The verdict

Martin County has a nationally busy FEMA history: 15 declarations, more than 23% of counties in this registry. But the state comparison tempers that reading: the total is 15% below the Minnesota county mean. FEMA's separate National Risk Index places the county safer than 45%; that score models loss and vulnerability rather than counting declarations.

Safer than 45%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
15
FEMA declarations vs 21 national county avg
6
flood declarations, the most common hazard here

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Major Disaster (DR) and Emergency (EM) records; an EM authorizes a narrower set of federal assistance than a DR.

View my watchlist

FEMA OpenFEMA declaration desk

County FIPS 27091 · Martin County 15 declarations · rank 2386/3,266

DECL-MID · MAJOR-HEAVY · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW

  • DECL-MID 15
  • MAJOR-HEAVY 80%
  • RANK-LOWER #2,386
  • PHOTO-FINISH Polk
  • NRI-LOW 45
  • ACT-HIGH High
  • TYPE-LEAD Flood
  • VS-ST-BELOW -15%

Nearest declaration peer: Polk, OR (0 declaration gap)

FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · Minnesota state profile

Martin County among counties with fewer federal records

FEMA declaration records among Martin County and nearest peers by total count

declarations

What this shows Martin County carries 15 FEMA declaration records, ranked 2386 of 3,266 counties in this registry.

Source FEMA OpenFEMA Disaster Declarations Summaries v2 As of 2026-08-25

Martin County versus quieter counties in this dataset

Martin County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Martin County

15 23rd percentile higher than 23% of 3,266 counties

This county 0 90 all U.S. counties FEMA tracks, bucketed by value

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 · 2026-08-25

Martin County's FEMA Risk Index score

0/100100/100Minnesota avg42/10045.5/100
FEMA National Risk Index composite score vs. the Minnesota county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Martin County is led by Riverine Flooding (about $4.3M Expected Annual Loss, Historical Loss Ratio Relatively High), while Winter Weather carries the highest National Risk Index rating (Relatively High). EAL and risk score use different inputs; they need not agree.

Source: FEMA National Risk Index (December 2025 release) - Expected Annual Loss vs composite risk rating by hazard.

What does Martin County's hazard record show?

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 45.5/100 for this county (Relatively Low rating). Expected Annual Loss comes in at Very Low (roughly $13.1M in annualized losses). Social vulnerability (Relatively Moderate) and community resilience (Very High) both factor into how that raw exposure plays out on the ground. Of the 18 hazards FEMA models, Winter Weather stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 22 times per year here, based on 412 historical events on record.

Reading the federal records together

No paid-claim row for this county appears in the NFIP county table used by PlainHazard. That absence is not evidence that flooding never occurred: the register observes claims under federal flood-insurance policies, not uninsured losses, emergency reports, or every flood outside the program. The FEMA declaration history below is therefore the available federal-action record on this page.

Start with the state benchmark: a Minnesota county averages 17.7 federal declaration records, while Martin County has 15. The gap is 15% below that mean. Fewer entries indicate a quieter history of recorded federal actions, not immunity from a hazard and not a prediction about what happens next.

57 /100

Historical Activity Index

High historical activity

Martin County, MN · PlainHazard-derived composite from federal records

This 0–100 index is an explicit PlainHazard composite from FEMA declaration history only on the county surface (this DB has no county-level NOAA damage row) . It is not FEMA's National Risk Index, not a forecast, and not a safety, insurance, or preparedness rating. Open the calculator · Methodology

FEMA Declarations (1953–present) Moderate
11/30

15 OpenFEMA declarations, full ingest window (0.7x national county average)

County Disaster Density Moderate
11/25

15 declarations (0.8x state county average of 18)

Major Disaster Share Very High
20/25

12 of 15 declarations are major disasters (80%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Martin County

FEMA NRI 8-hazard radar - Martin County

Martin County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 0, Tornado 48, Wildfire 8, Drought 48, Heat Wave 25, Winter Storm 70. The simple mean of these eight displayed scores is 29 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 29 8-hazard mean
Martin County NRI risk profile FIPS 27091 · displayed-hazard mean 29/100
How to read this radar

Each axis: NRI risk rating (Very Low-Very High) on a 0-100 scale. Rounder = broad exposure; spiky = one or two hazards dominate.

FEMA Records

15

Below median

Major Disaster share

80%

Mostly major

NRI risk score

45

Relatively Low

Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release

How often does each hazard strike Martin County?

FEMA's National Risk Index models a historical event count and an annualized frequency for each hazard type. Most hazards are expressed as modeled occurrences per year; FEMA expresses drought and heat-wave frequency as event-days per year. These modeled frequencies are not forecasts.

Hazard NRI Risk Rating Recurrence
Winter Weather Relatively High an average of 22 times per year
Hail Relatively Moderate an average of 4.4 times per year
Drought Relatively Moderate 12 modeled event-days per year
Strong Wind Relatively Moderate an average of 3.5 times per year
Cold Wave Relatively Moderate an average of 11 times per year
Tornado Relatively Moderate roughly once every 2 years
Ice Storm Relatively Low roughly once every 2 years
Heat Wave Relatively Low 4.8 modeled event-days per year
Riverine Flooding Relatively Low roughly once every 2 years
Landslide Very Low roughly once every 13 years
Lightning Very Low an average of 39 times per year
Wildfire Very Low roughly once every 8,951 years
Earthquake Very Low roughly once every 2,604 years

Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release

Disaster Types

Flood 6
Severe Storm 4
Biological 2
Hurricane 1
Severe Ice Storm 1
Drought 1

What Flood declarations mean here

Flood is the most frequent declaration type on Martin County's record, 40% of its declarations. Federal flood declarations cover two mechanisms that behave very differently: riverine flooding, which builds over days as a watershed drains and is usually forecast well in advance, and flash flooding, which can arrive in under an hour from rainfall that fell somewhere upstream.

Flood is also the one hazard class where a second federal dataset exists for the same events. The National Flood Insurance Program records what was actually paid on insured losses, so it measures a narrower thing than the declaration count: uninsured damage, and flooding outside mapped special flood hazard areas, never enters it. Reading the two together is more informative than either alone.

Declaration counts describe past federal action. They are a record of what was declared, not a forecast of future hazard probability.

Declaration Types

What DR / EM / FM mean

FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).

Major Disaster - 12 80.0%

of all 15 declarations

Emergency - 3 20.0%

of all 15 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2020 2
2019 1
2018 1
2014 1
2011 1
2005 2
1997 1
1993 1
1992 1
1976 1
1969 1
1965 1

Disaster Declarations

How the 15 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 15 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4797 SEVERE STORMS AND FLOODING DR Flood 2024-06-28
4531 COVID-19 PANDEMIC DR Biological 2020-04-07
3453 COVID-19 EM Biological 2020-03-13
4442 SEVERE WINTER STORM, STRAIGHT-LINE WINDS, AND FLOODING DR Flood 2019-06-12
4390 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Flood 2018-09-05
4182 SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Flood 2014-07-21
1941 SEVERE STORMS AND FLOODING DR Severe Storm 2010-10-13
3242 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
1569 SEVERE STORMS AND FLOODING DR Severe Storm 2004-10-07
1158 SEVERE WINTER STORMS DR Severe Storm 1997-01-16
993 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-06-11
929 ICE STORM DR Severe Ice Storm 1991-12-26
3013 DROUGHT EM Drought 1976-06-17
255 FLOODING DR Flood 1969-04-18
188 FLOODING DR Flood 1965-04-11

Storm Events in Minnesota

Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Martin County.

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 4,420 13 25 $68.2M
Hail 4,203 0 0 $34.5M
Extreme Cold/Wind Chill 1,789 7 4 $55.0K
Winter Storm 1,695 2 17 $10.0M
Heavy Snow 1,190 9 14 $1.0M

Source: NOAA Storm Events Database State-level aggregated data, 2015-2025

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 45.5/100

Expected Annual Loss

Very Low

$13.1M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Very High

Hazard Risk Breakdown

Winter Weather Relatively High
Hail Relatively Moderate
Drought Relatively Moderate
Strong Wind Relatively Moderate
Cold Wave Relatively Moderate
Tornado Relatively Moderate
Ice Storm Relatively Low
Heat Wave Relatively Low
Riverine Flooding Relatively Low
Landslide Very Low
Lightning Very Low
Wildfire Very Low
Earthquake Very Low

Source: FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri

The model's sharpest exposure here: Winter Weather

Winter Weather in the model means the accumulation of snow and cold that disrupts rather than destroys: road closures, roof loads, burst pipes and lost heating. Its costs land heavily on transport and on households least able to absorb an interruption.

Worth noting for Martin County: the model and the federal record do NOT point at the same hazard. Winter Weather carries the highest modeled rating (Relatively High), while the county's declaration history is led by Flood. That is not a contradiction, the two measure genuinely different things. Declarations record federal ACTION, which requires damage costly enough to exceed state and local capacity; the Risk Index models EXPECTED annual loss across all 18 hazards whether or not any declaration ever followed. A hazard can be the county's largest modeled exposure and never once have driven a declaration.

National Risk Index ratings are modeled estimates of expected annual loss, not predictions of what will happen in any given year.

Data-matched county comparisons

Martin County's closest FEMA peer: Ellis County, KS

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Martin County. Record similarity, not a safety rating.

How these peers are chosen

Cohort: Published U.S. county equivalents outside the source state or territory. Each metric keeps six ETL candidates; three unique destinations are shown after de-duplicating across axes. Declaration-volume ranking combines count and Major-disaster share and prefers a different leading incident type; Major-share ranks the Major fraction adjusted for volume; NRI ranks the modeled composite score only.

Retained FEMA snapshot feed for Martin County - capture-dated entries only.

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Martin County: nearest out-of-state National Risk Index composite and nearest FEMA declaration count (floor ≥5 records). Record similarity only, not a forecast of the next hazard.

Further reading for this county

Most disaster-prone counties

With 15 FEMA declarations, Martin County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Martin County?
The most common disaster type in Martin County is Flood, with 6 declarations. Other disaster types include Severe Storm (4), Biological (2), Hurricane (1).
How does Martin County's FEMA declaration record compare with the Minnesota average?
The typical Minnesota county has 17.7 FEMA declaration records; Martin County has 15, or 15% fewer. Against the national county mean of 20.7, this county's total is 28% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Martin County received?
Martin County has received 12 major disaster declarations, representing 80% of all 15 disaster declarations.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Martin County?
No. In Martin County, Winter Weather has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $4.3M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Martin County?
The most active year for disaster declarations in Martin County was 2005, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2024.
What is the FEMA National Risk Index score for Martin County?
According to the FEMA National Risk Index, Martin County, Minnesota has an overall risk score of 45.5 out of 100 (Relatively Low). Social vulnerability here rates Relatively Moderate, while community resilience comes in at Very High. The Expected Annual Loss (EAL) score is Very Low, representing $13.1M in annualized losses.
Which natural hazard poses the greatest risk to Martin County?
The top hazard flagged by FEMA's NRI for Martin County is Winter Weather (risk rating: Relatively High). Other significant hazards include Hail (Relatively Moderate) and Drought (Relatively Moderate). FEMA's modeled event frequency puts winter weather here at an average of 22 times per year, drawn from 412 historical events on record. The underlying methodology weighs historical event frequency against 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.

FEMA OpenFEMA declarations + NRI for Martin County · vintage 2026-08-25 · Methodology · Minnesota profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events