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Oregon · FEMA + NOAA + National Risk Index

Polk County, OR

15 FEMA disaster declarations (1965-2026), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Severe Storm.

15
FEMA declarations
13
Major disasters
73
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Polk 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 10% below the Oregon county mean. FEMA's separate National Risk Index places the county in the riskiest 27%; that score models loss and vulnerability rather than counting declarations.

Riskiest 27%
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
78
NFIP flood insurance claims filed

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.

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FEMA OpenFEMA declaration desk

County FIPS 41053 · Polk County 15 declarations · rank 2371/3,266

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

  • DECL-MID 15
  • MAJOR-HEAVY 87%
  • RANK-LOWER #2,371
  • PHOTO-FINISH Flathead
  • NRI-LOW 73
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-BELOW -10%

Nearest declaration peer: Flathead, MT (0 declaration gap)

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

Polk County among counties with fewer federal records

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

declarations

What this shows Polk County carries 15 FEMA declaration records, ranked 2371 of 3,266 counties in this registry.

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

Polk County versus quieter counties in this dataset

Polk County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Polk 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

Polk County's FEMA Risk Index score

0/100100/100Oregon avg63/10072.8/100
FEMA National Risk Index composite score vs. the Oregon county average

What does Polk County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 78 paid claims, totaling $851.7K. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $10.9K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

Start with the state benchmark: a Oregon county averages 16.6 federal declaration records, while Polk County has 15. The gap is 10% 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.

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 72.8/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $37.9M in annualized losses), and a Very Low social-vulnerability profile combined with Relatively High community resilience shapes how much of that raw exposure becomes realized harm. Among the 18 modeled hazards, Earthquake carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at roughly once every 51 years here.

54 /100

Historical Activity Index

High historical activity

Polk 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) Moderate
11/30

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

County Disaster Density Moderate
11/25

15 declarations (0.9x state county average of 17)

Major Disaster Share Very High
22/25

13 of 15 declarations are major disasters (87%)

Hazard Diversity High
10/20

4 different disaster types declared in Polk County

FEMA NRI 8-hazard radar - Polk County

Polk County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 48, Flood 25, Hurricane 0, Tornado 8, Wildfire 8, Drought 8, Heat Wave 48, Winter Storm 48. The simple mean of these eight displayed scores is 24 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 24 8-hazard mean
Polk County NRI risk profile FIPS 41053 · displayed-hazard mean 24/100
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

87%

Mostly major

NRI risk score

73

Relatively Low

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

How often does each hazard strike Polk 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
Earthquake Relatively Moderate roughly once every 51 years
Heat Wave Relatively Moderate 6.1 modeled event-days per year
Volcanic Activity Very Low roughly once every 99 years
Landslide Relatively Low an average of 4.2 times per year
Riverine Flooding Relatively Low roughly once every 1 years
Ice Storm Relatively Moderate roughly once every 2 years
Wildfire Very Low roughly once every 11,448 years
Winter Weather Relatively Low an average of 7.9 times per year
Lightning Relatively Low an average of 5 times per year
Cold Wave Very Low roughly once every 19 years
Avalanche Very Low roughly once every 100 years
Tornado Very Low roughly once every 17 years
Drought Very Low 0.3 modeled event-days per year
Strong Wind Very Low roughly once every 21 years
Hail Very Low roughly once every 24 years

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

Disaster Types

Severe Storm 8
Flood 4
Biological 2
Coastal Storm 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Polk County's record, 53% 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 - 13 86.7%

of all 15 declarations

Emergency - 2 13.3%

of all 15 declarations

FEMA Declarations Timeline

Year Declarations
2026 1
2021 1
2020 2
2016 1
2012 1
2009 1
2008 1
2007 1
2006 1
2005 1
2004 1
1996 1
1974 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
4907 SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Severe Storm 2026-04-07
4599 SEVERE WINTER STORM DR Severe Storm 2021-05-04
4499 COVID-19 PANDEMIC DR Biological 2020-03-28
3429 COVID-19 EM Biological 2020-03-13
4258 SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Severe Storm 2016-02-17
4055 SEVERE WINTER STORM, FLOODING, LANDSLIDES, AND MUDSLIDES DR Flood 2012-03-02
1824 SEVERE WINTER STORM, RECORD AND NEAR RECORD SNOW DR Severe Storm 2009-03-02
1733 SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Severe Storm 2007-12-08
1683 SEVERE WINTER STORM AND FLOODING DR Severe Storm 2007-02-22
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
413 SEVERE STORMS, SNOWMELT & FLOODING DR Flood 1974-01-25
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 Polk 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

78

Total Paid

$851.7K

Avg Per Claim

$10.9K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 72.8/100

Expected Annual Loss

Relatively Low

$37.9M/year

Social Vulnerability

Very Low

Community Resilience

Relatively High

Hazard Risk Breakdown

Earthquake Relatively Moderate
Heat Wave Relatively Moderate
Volcanic Activity Very Low
Landslide Relatively Low
Riverine Flooding Relatively Low
Ice Storm Relatively Moderate
Wildfire Very Low
Winter Weather Relatively Low
Lightning Relatively Low
Cold Wave Very Low
Avalanche Very Low
Tornado Very Low
Drought Very Low
Strong Wind Very Low
Hail Very Low
Coastal Flooding No Rating

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: Earthquake

Earthquake is the model's clearest example of a hazard with no season and no warning. Its expected loss is driven less by how often shaking occurs than by how much of the building stock predates modern seismic codes, so exposure can be high in places where nothing has happened for a long time.

Worth noting for Polk County: the model and the federal record do NOT point at the same hazard. Earthquake 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

Polk County's closest FEMA peer: Carroll County, TN

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Polk 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

Understanding disaster data

Polk County's NFIP claims file (78 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Polk County?
The most common disaster type in Polk County is Severe Storm, with 8 declarations. Other disaster types include Flood (4), Biological (2), Coastal Storm (1).
How does Polk County's FEMA declaration record compare with the Oregon average?
The typical Oregon county has 16.6 FEMA declaration records; Polk County has 15, or 10% 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 Polk County received?
Polk County has received 13 major disaster declarations, representing 87% of all 15 disaster declarations.
How many flood insurance claims has Polk County filed?
Polk County has 78 National Flood Insurance Program (NFIP) claims totaling $851.7K in payments, with an average of $10.9K per claim.
What was the worst year for disasters in Polk County?
The most active year for disaster declarations in Polk County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2026.
What is the FEMA National Risk Index score for Polk County?
According to the FEMA National Risk Index, Polk County, Oregon has an overall risk score of 72.8 out of 100 (Relatively Low). Social vulnerability here rates Very Low, while community resilience comes in at Relatively High. The Expected Annual Loss (EAL) score is Relatively Low, representing $37.9M in annualized losses.
Which natural hazard poses the greatest risk to Polk County?
Based on FEMA NRI data, the highest-risk natural hazard in Polk County is Earthquake (risk rating: Relatively Moderate). Other significant hazards include Heat Wave (Relatively Moderate) and Volcanic Activity (Very Low). FEMA's modeled event frequency puts earthquake here at roughly once every 51 years. 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.

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