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Utah · FEMA + NOAA + National Risk Index

Summit County, UT

9 FEMA disaster declarations (1977-2021), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

9
FEMA declarations
4
Major disasters
60
NRI risk · Relatively Low
Flood
Top hazard

The verdict

FEMA records a middle-volume declaration history for Summit County: 9 entries, 6% above its Utah county benchmark and ahead of 8% of counties nationally. The National Risk Index answers a different question. Its modeled loss, vulnerability, and resilience inputs place this county in the riskiest 40% of U.S. counties.

Riskiest 40%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
9
FEMA declarations vs 21 national county avg
46
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 49043 · Summit County 9 declarations · rank 3017/3,266

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

  • DECL-LIGHT 9
  • MAJOR-LIGHT 44%
  • RANK-LOWER #3,017
  • PHOTO-FINISH Fulton
  • NRI-LOW 60
  • ACT-MODERATE Moderate
  • TYPE-LEAD Flood
  • VS-ST-ABOVE +6%

Nearest declaration peer: Fulton, OH (0 declaration gap)

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

Summit County among counties with fewer federal records

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

declarations

What this shows Summit County carries 9 FEMA declaration records, ranked 3017 of 3,266 counties in this registry.

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

Summit County versus quieter counties in this dataset

Summit County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Summit County

9 8th percentile higher than 8% 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

Summit County's FEMA Risk Index score

0/100100/100Utah avg36/10060.1/100
FEMA National Risk Index composite score vs. the Utah county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Summit County is led by Riverine Flooding (about $11.9M Expected Annual Loss, Historical Loss Ratio Relatively High), while Avalanche carries the highest National Risk Index rating (Very 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 Summit County's hazard record show?

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 60.1/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $38.6M in annualized losses), and a Very Low social-vulnerability profile combined with Very High community resilience shapes how much of that raw exposure becomes realized harm. Of the 18 hazards FEMA models, Avalanche stands out as the sharpest exposure here, rated Very High. FEMA's modeled frequency puts that hazard at an average of 1.5 times per year here, based on 46 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 46 claims and $160.7K 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.

The declaration register points in the busier direction. Summit County's 9 federal records stand 6% above the Utah county mean of 8.5. 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.

44 /100

Historical Activity Index

Moderate historical activity

Summit County, UT · 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

9 OpenFEMA declarations, full ingest window (0.4x national county average)

County Disaster Density High
13/25

9 declarations (1.1x state county average of 8)

Major Disaster Share Moderate
11/25

4 of 9 declarations are major disasters (44%)

Hazard Diversity High
13/20

5 different disaster types declared in Summit County

FEMA NRI 8-hazard radar - Summit County

Summit County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 0, Tornado 8, Wildfire 48, Drought 8, Heat Wave 8, Winter Storm 70. The simple mean of these eight displayed scores is 22 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 22 8-hazard mean
Summit County NRI risk profile FIPS 49043 · displayed-hazard mean 22/100
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

9

Low volume

Major Disaster share

44%

Mixed major share

NRI risk score

60

Relatively Low

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

How often does each hazard strike Summit 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
Avalanche Very High an average of 1.5 times per year
Wildfire Relatively Moderate roughly once every 224 years
Landslide Relatively Moderate an average of 1.4 times per year
Lightning Relatively High an average of 43 times per year
Winter Weather Relatively High an average of 51 times per year
Strong Wind Relatively Moderate roughly once every 1 years
Earthquake Very Low roughly once every 142 years
Riverine Flooding Relatively Low roughly once every 5 years
Volcanic Activity Very Low roughly once every 10,000 years
Drought Very Low 75 modeled event-days per year
Heat Wave Very Low 0.1 modeled event-days per year
Ice Storm Very Low roughly once every 67 years
Tornado Very Low roughly once every 9 years
Hail Very Low roughly once every 4 years
Cold Wave Very Low roughly once every 15 years

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

Disaster Types

Flood 3
Fire 2
Biological 2
Coastal Storm 1
Drought 1

What Flood declarations mean here

Flood is the most frequent declaration type on Summit County's record, 33% 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 - 4 44.4%

of all 9 declarations

Emergency - 3 33.3%

of all 9 declarations

Fire Management - 2 22.2%

of all 9 declarations

FEMA Declarations Timeline

Year Declarations
2021 1
2020 2
2013 1
2011 1
2005 1
1984 1
1983 1
1977 1

Disaster Declarations

How the 9 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 9 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
5408 PARLEYS CANYON FIRE FM Fire 2021-08-14
4525 COVID-19 PANDEMIC DR Biological 2020-04-04
3478 COVID-19 EM Biological 2020-03-13
5044 ROCKPORT FIVE FIRE FM Fire 2013-08-13
4011 FLOODING DR Flood 2011-08-08
3223 HURRICANE KATRINA EVACUATION EM Coastal Storm 2005-09-05
720 SEVERE STORMS, MUDSLIDES, LANDSLIDES & FLOODING DR Flood 1984-08-17
680 SEVERE STORMS, LANDSLIDES & FLOODING DR Flood 1983-04-30
3024 DROUGHT EM Drought 1977-01-20

Storm Events in Utah

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 1,382 3 7 $2.2M
Flash Flood 536 29 17 $101.2M
High Wind 496 4 60 $12.7M
Heavy Snow 488 1 2 $2.4M
Winter Storm 344 1 36 $435.0K

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

NFIP Flood Insurance Claims

Total Claims

46

Total Paid

$160.7K

Avg Per Claim

$3.5K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 60.1/100

Expected Annual Loss

Relatively Low

$38.6M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

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

Avalanche is the most geographically restricted hazard in the model, limited to steep terrain holding seasonal snow. Its exposure concentrates on mountain roads, rail corridors and backcountry recreation rather than on the built environment generally.

Worth noting for Summit County: the model and the federal record do NOT point at the same hazard. Avalanche carries the highest modeled rating (Very 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

Summit County's closest FEMA peer: Cass County, IA

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Summit 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 Avalanche as the top modeled exposure here (Very 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 Summit County?
The most common disaster type in Summit County is Flood, with 3 declarations. Other disaster types include Fire (2), Biological (2), Coastal Storm (1).
How does Summit County's FEMA declaration record compare with the Utah average?
FEMA lists 9 declaration records for Summit County. That is 6% above the Utah county mean of 8.5. Its count is also 57% 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 Summit County received?
Summit County has received 4 major disaster declarations, representing 44% of all 9 disaster declarations.
How many flood insurance claims has Summit County filed?
Summit County has 46 National Flood Insurance Program (NFIP) claims totaling $160.7K in payments, with an average of $3.5K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Summit County?
No. In Summit County, Avalanche has the highest National Risk Index rating (Very High), while Riverine Flooding leads Expected Annual Loss at about $11.9M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Summit County?
The most active year for disaster declarations in Summit County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1977 to 2021.
What is the FEMA National Risk Index score for Summit County?
According to the FEMA National Risk Index, Summit County, Utah has an overall risk score of 60.1 out of 100 (Relatively Low). On social vulnerability the county rates Very Low; on community resilience, Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $38.6M in annualized losses.
Which natural hazard poses the greatest risk to Summit County?
FEMA's NRI data points to Summit County is Avalanche (risk rating: Very High). Other significant hazards include Wildfire (Relatively Moderate) and Landslide (Relatively Moderate). FEMA's modeled event frequency puts avalanche here at an average of 1.5 times per year, drawn from 46 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 Summit County · vintage 2026-08-25 · Methodology · Utah profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events