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Wyoming · FEMA + NOAA + National Risk Index

Campbell County, WY

6 FEMA disaster declarations (1978-2025), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Biological.

6
FEMA declarations
4
Major disasters
56
NRI risk · Relatively Low
Biological
Top hazard

The verdict

FEMA records a middle-volume declaration history for Campbell County: 6 entries, 5% above its Wyoming county benchmark and ahead of 3% of counties nationally. The National Risk Index answers a different question. Its modeled loss, vulnerability, and resilience inputs place this county in the riskiest 44% of U.S. counties.

Riskiest 44%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
6
FEMA declarations vs 21 national county avg
22
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 56005 · Campbell County 6 declarations · rank 3178/3,266

DECL-LIGHT · MAJOR-MID · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-MODERATE · TYPE-LEAD · VS-ST-ABOVE

  • DECL-LIGHT 6
  • MAJOR-MID 67%
  • RANK-LOWER #3,178
  • PHOTO-FINISH Summit
  • NRI-LOW 56
  • ACT-MODERATE Moderate
  • TYPE-LEAD Biological
  • VS-ST-ABOVE +5%

Nearest declaration peer: Summit, CO (0 declaration gap)

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

Campbell County among counties with fewer federal records

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

declarations

What this shows Campbell County carries 6 FEMA declaration records, ranked 3178 of 3,266 counties in this registry.

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

Campbell County versus quieter counties in this dataset

Campbell County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Campbell County

6 3rd percentile higher than 3% 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

Campbell County's FEMA Risk Index score

0/100100/100Wyoming avg38/10056.1/100
FEMA National Risk Index composite score vs. the Wyoming county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Campbell County is led by Cold Wave (about $7.8M Expected Annual Loss, Historical Loss Ratio Relatively High), while Hail 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 Campbell County's hazard record show?

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 56.1/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $25.0M in annualized losses), and a Very Low social-vulnerability profile combined with Very Low community resilience shapes how much of that raw exposure becomes realized harm. Of the 18 hazards FEMA models, Hail stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 2.2 times per year here, based on 83 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 22 claims and $38.1K 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.

The declaration register points in the busier direction. Campbell County's 6 federal records stand 5% above the Wyoming county mean of 5.7. That comparison describes how often federal action was recorded, including any Major Disaster, Emergency, and Fire Management entries shown on this page; it does not convert the count into future probability.

47 /100

Historical Activity Index

Moderate historical activity

Campbell County, WY · 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
4/30

6 OpenFEMA declarations, full ingest window (0.3x national county average)

County Disaster Density High
13/25

6 declarations (1.1x state county average of 6)

Major Disaster Share High
17/25

4 of 6 declarations are major disasters (67%)

Hazard Diversity High
13/20

5 different disaster types declared in Campbell County

FEMA NRI 8-hazard radar - Campbell County

Campbell County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 25, Hurricane 0, Tornado 25, Wildfire 48, Drought 8, Heat Wave 8, Winter Storm 70. The simple mean of these eight displayed scores is 26 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 26 8-hazard mean
Campbell County NRI risk profile FIPS 56005 · displayed-hazard mean 26/100
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

6

Low volume

Major Disaster share

67%

Major-heavy

NRI risk score

56

Relatively Low

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

How often does each hazard strike Campbell 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
Hail Relatively High an average of 2.2 times per year
Wildfire Relatively Moderate roughly once every 227 years
Winter Weather Relatively High an average of 16 times per year
Cold Wave Relatively Moderate an average of 4.8 times per year
Earthquake Relatively Low roughly once every 437 years
Landslide Relatively Low an average of 3.7 times per year
Lightning Relatively Moderate an average of 38 times per year
Tornado Relatively Low roughly once every 1 years
Riverine Flooding Relatively Low roughly once every 1 years
Strong Wind Relatively Low an average of 1.1 times per year
Drought Very Low 80 modeled event-days per year
Ice Storm Very Low roughly once every 67 years
Heat Wave Very Low 0.2 modeled event-days per year

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

Disaster Types

Biological 2
Fire 1
Tornado 1
Toxic Substances 1
Flood 1

What Biological declarations mean here

Biological is the most frequent declaration type on Campbell County's record, 33% of its declarations. In practice this category is dominated by the COVID-19 declarations of 2020, which were issued across every US state and territory rather than in response to any local hazard event.

This has a direct consequence for how Campbell County's number should be read. Because those declarations reached essentially every county in the country, they raise every county's total by a similar amount and tell you nothing about local hazard exposure. A county whose record is led by Biological declarations is, in most cases, a county with a genuinely quiet weather-hazard history, the pandemic records are simply the largest thing in an otherwise short list.

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 - 4 66.7%

of all 6 declarations

Emergency - 2 33.3%

of all 6 declarations

FEMA Declarations Timeline

Year Declarations
2025 1
2020 2
2005 1
1987 1
1978 1

Disaster Declarations

How the 6 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 6 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4845 WILDFIRES DR Fire 2024-11-13
4535 COVID-19 PANDEMIC DR Biological 2020-04-11
3479 COVID-19 EM Biological 2020-03-13
1599 TORNADO DR Tornado 2005-08-22
3092 METHANE GAS SEEPAGE EM Toxic Substances 1987-09-04
557 SEVERE STORMS, FLOODING & MUDSLIDES DR Flood 1978-05-29

Storm Events in Wyoming

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

Storm Type Events Fatalities Injuries Property Damage
High Wind 5,115 0 21 $1.5M
Winter Storm 2,212 1 41 $115.0K
Hail 1,811 0 0 $5.5M
Thunderstorm Wind 1,137 1 12 $916.3K
Winter Weather 616 3 7 $100.0K

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

NFIP Flood Insurance Claims

Total Claims

22

Total Paid

$38.1K

Avg Per Claim

$1.7K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 56.1/100

Expected Annual Loss

Relatively Low

$25.0M/year

Social Vulnerability

Very Low

Community Resilience

Very Low

Hazard Risk Breakdown

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

Hail is among the most expensive hazards in the model relative to how little it threatens life. It concentrates on roofs, vehicles and crops, and a single severe storm can generate an insurance loss across a metropolitan area without a single injury.

Worth noting for Campbell County: the model and the federal record do NOT point at the same hazard. Hail carries the highest modeled rating (Relatively High), while the county's declaration history is led by Biological. 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

Campbell County's closest FEMA peer: San Juan County, CO

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Campbell 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

FEMA's National Risk Index flags Hail as the top modeled exposure here (Relatively High); the guide explains how that model differs from declaration counts.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Campbell County?
The most common disaster type in Campbell County is Biological, with 2 declarations. Other disaster types include Fire (1), Tornado (1), Toxic Substances (1).
How does Campbell County's FEMA declaration record compare with the Wyoming average?
FEMA lists 6 declaration records for Campbell County. That is 5% above the Wyoming county mean of 5.7. Its count is also 71% below the national county mean of 20.7. A larger declaration history records more federal actions; it is not a forecast of the county's next hazard.
How many major FEMA disaster declarations has Campbell County received?
Campbell County has received 4 major disaster declarations, representing 67% of all 6 disaster declarations.
How many flood insurance claims has Campbell County filed?
Campbell County has 22 National Flood Insurance Program (NFIP) claims totaling $38.1K in payments, with an average of $1.7K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Campbell County?
No. In Campbell County, Hail has the highest National Risk Index rating (Relatively High), while Cold Wave leads Expected Annual Loss at about $7.8M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Campbell County?
The most active year for disaster declarations in Campbell County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1978 to 2025.
What is the FEMA National Risk Index score for Campbell County?
According to the FEMA National Risk Index, Campbell County, Wyoming has an overall risk score of 56.1 out of 100 (Relatively Low). On social vulnerability the county rates Very Low; on community resilience, Very Low. The Expected Annual Loss (EAL) score is Relatively Low, representing $25.0M in annualized losses.
Which natural hazard poses the greatest risk to Campbell County?
Based on FEMA NRI data, the highest-risk natural hazard in Campbell County is Hail (risk rating: Relatively High). Other significant hazards include Wildfire (Relatively Moderate) and Winter Weather (Relatively High). FEMA's modeled event frequency puts hail here at an average of 2.2 times per year, drawn from 83 historical events on record. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
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 Campbell County · vintage 2026-08-25 · Methodology · Wyoming profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events