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Oregon · FEMA + NOAA + National Risk Index

Sherman County, OR

10 FEMA disaster declarations (1965-2024), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.

10
FEMA declarations
6
Major disasters
3
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Sherman County has a nationally busy FEMA history: 10 declarations, more than 10% of counties in this registry. But the state comparison tempers that reading: the total is 40% below the Oregon county mean. FEMA's separate National Risk Index places the county safer than 3%; that score models loss and vulnerability rather than counting declarations.

Safer than 3%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
10
FEMA declarations vs 21 national county avg
1
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Fire Management Assistance (FM) records, which are not presidential disaster declarations, alongside Major Disaster (DR) and Emergency (EM) records.

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FEMA OpenFEMA declaration desk

County FIPS 41055 · Sherman County 10 declarations · rank 2900/3,266

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

  • DECL-MID 10
  • MAJOR-MID 60%
  • RANK-LOWER #2,900
  • PHOTO-FINISH Cheyenne
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-BELOW -40%

Nearest declaration peer: Cheyenne, NE (0 declaration gap)

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

Sherman County among counties with fewer federal records

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

declarations

What this shows Sherman County carries 10 FEMA declaration records, ranked 2900 of 3,266 counties in this registry.

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

Sherman County versus quieter counties in this dataset

Sherman County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Sherman County

10 10th percentile higher than 10% 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

Sherman County's FEMA Risk Index score

0/100100/100Oregon avg63/1002.9/100
FEMA National Risk Index composite score vs. the Oregon county average

What does Sherman County's hazard record show?

FEMA National Risk Index

This county sits at the very bottom of FEMA's National Risk Index nationally, a composite score of 2.9/100 (rated Very Low). Projected losses are minimal, Expected Annual Loss reads Very Low (roughly $2.6M in annualized losses), and the county's exposure is shaped by a Relatively Low social-vulnerability profile and Relatively Moderate community resilience. Among the 18 modeled hazards, Wildfire carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at roughly once every 67 years here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 1 claim and $40.7K paid in total. PlainHazard calls 1-49 claims a light registry record, a label for this dataset rather than a finding that flood exposure is low. A short claims history can also reflect insurance take-up, the period covered, or losses that were never insured.

Start with the state benchmark: a Oregon county averages 16.6 federal declaration records, while Sherman County has 10. The gap is 40% 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.

45 /100

Historical Activity Index

Moderate historical activity

Sherman County, OR · 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) Low
7/30

10 OpenFEMA declarations, full ingest window (0.5x national county average)

County Disaster Density Moderate
8/25

10 declarations (0.6x state county average of 17)

Major Disaster Share High
15/25

6 of 10 declarations are major disasters (60%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Sherman County

FEMA NRI 8-hazard radar - Sherman County

Sherman County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 0, Tornado 8, Wildfire 48, Drought 8, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 14 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 14 8-hazard mean
Sherman County NRI risk profile FIPS 41055 · displayed-hazard mean 14/100
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

10

Low volume

Major Disaster share

60%

Major-heavy

NRI risk score

3

Very Low

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

How often does each hazard strike Sherman 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
Wildfire Relatively Moderate roughly once every 67 years
Volcanic Activity Very Low roughly once every 80 years
Avalanche Very Low roughly once every 100 years
Ice Storm Relatively Low roughly once every 10 years
Landslide Very Low roughly once every 3 years
Earthquake Very Low roughly once every 369 years
Drought Very Low 52 modeled event-days per year
Lightning Very Low an average of 7.3 times per year
Cold Wave Very Low roughly once every 2 years
Heat Wave Very Low 3.8 modeled event-days per year
Winter Weather Very Low an average of 11 times per year
Hail Very Low roughly once every 5 years
Riverine Flooding Very Low roughly once every 28 years
Strong Wind Very Low roughly once every 8 years
Tornado Very Low roughly once every 75 years

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

Disaster Types

Severe Storm 3
Biological 2
Flood 2
Fire 1
Coastal Storm 1
Drought 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Sherman County's record, 30% of its declarations. In FEMA's vocabulary this covers convective weather: thunderstorm straight-line winds, large hail, and the multi-day outbreaks that often carry embedded tornadoes. Activity is heaviest in spring and summer, though the season varies by region.

These events behave differently from a hurricane on paper. Damage tends to be distributed along a storm track rather than concentrated on a coastline, and a declaration typically follows an outbreak that crossed several counties over a few days, not a single point of impact. Because the qualifying threshold is the cost of uninsured public and individual losses rather than storm intensity, two similar storms can produce a declaration in one year and none in another.

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 - 6 60.0%

of all 10 declarations

Emergency - 3 30.0%

of all 10 declarations

Fire Management - 1 10.0%

of all 10 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2020 2
2018 1
2006 1
2005 1
2004 1
1996 1
1977 1
1965 1

Disaster Declarations

How the 10 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 10 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4768 SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, LANDSLIDES, AND MUDSLIDES DR Severe Storm 2024-04-13
4499 COVID-19 PANDEMIC DR Biological 2020-03-28
3429 COVID-19 EM Biological 2020-03-13
5255 SUBSTATION FIRE FM Fire 2018-07-18
1632 SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Severe Storm 2006-03-20
3228 HURRICANE KATRINA EVACUATION EM Coastal Storm 2005-09-07
1510 SEVERE WINTER STORMS DR Severe Storm 2004-02-19
1099 HIGH WINDS, SEVERE STORMS AND FLOODING DR Flood 1996-02-09
3039 DROUGHT EM Drought 1977-04-29
184 HEAVY RAINS & FLOODING DR Flood 1964-12-24

Storm Events in Oregon

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

Storm Type Events Fatalities Injuries Property Damage
High Wind 859 13 10 $3.2B
Heavy Snow 654 2 0 $139.2M
Frost/Freeze 391 0 0 $0
Wildfire 311 15 38 $15.1M
Flood 244 3 1 $68.4M

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

NFIP Flood Insurance Claims

Total Claims

1

Total Paid

$40.7K

Avg Per Claim

$40.7K

Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data

FEMA National Risk Index

Overall Risk

Very Low

Score: 2.9/100

Expected Annual Loss

Very Low

$2.6M/year

Social Vulnerability

Relatively Low

Community Resilience

Relatively Moderate

Hazard Risk Breakdown

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

Wildfire risk in the model reflects fuel, terrain, weather and how much development sits in the wildland-urban interface. It is one of the few hazards where the exposure is materially changed by land management and building choices, not only by where the county happens to be.

Worth noting for Sherman County: the model and the federal record do NOT point at the same hazard. Wildfire carries the highest modeled rating (Relatively Moderate), while the county's declaration history is led by Severe Storm. 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

Sherman County's closest FEMA peer: Polk County, WI

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Sherman 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 Sherman County - capture-dated entries only.

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Sherman 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 10 FEMA declarations, Sherman 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 Sherman County?
The most common disaster type in Sherman County is Severe Storm, with 3 declarations. Other disaster types include Biological (2), Flood (2), Fire (1).
How does Sherman County's FEMA declaration record compare with the Oregon average?
The typical Oregon county has 16.6 FEMA declaration records; Sherman County has 10, or 40% fewer. Against the national county mean of 20.7, this county's total is 52% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Sherman County received?
Sherman County has received 6 major disaster declarations, representing 60% of all 10 disaster declarations.
How many flood insurance claims has Sherman County filed?
Sherman County has 1 National Flood Insurance Program (NFIP) claims totaling $40.7K in payments, with an average of $40.7K per claim.
What was the worst year for disasters in Sherman County?
The most active year for disaster declarations in Sherman County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2024.
What is the FEMA National Risk Index score for Sherman County?
According to the FEMA National Risk Index, Sherman County, Oregon has an overall risk score of 2.9 out of 100 (Very Low). On social vulnerability the county rates Relatively Low; on community resilience, Relatively Moderate. The Expected Annual Loss (EAL) score is Very Low, representing $2.6M in annualized losses.
Which natural hazard poses the greatest risk to Sherman County?
The top hazard flagged by FEMA's NRI for Sherman County is Wildfire (risk rating: Relatively Moderate). Other significant hazards include Volcanic Activity (Very Low) and Avalanche (Very Low). FEMA's modeled event frequency puts wildfire here at roughly once every 67 years. 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.

Flood insurance data comes from the FEMA National Flood Insurance Program (NFIP) OpenFEMA claims dataset.

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 Sherman County · vintage 2026-08-25 · Methodology · Oregon profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events