FEMA Records
22
Above median
California · FEMA + NOAA + National Risk Index
Yolo County, CA
22 FEMA disaster declarations (1965-2023), with a FEMA National Risk Index rating of Relatively Moderate. Most common hazard: Severe Storm.
- 22
- FEMA declarations
- 16
- Major disasters
- 91
- NRI risk · Relatively Moderate
- Severe Storm
- Top hazard
The verdict
Yolo County has a nationally busy FEMA history: 22 declarations, more than 57% of counties in this registry. But the state comparison tempers that reading: the total is 23% below the California county mean. FEMA's separate National Risk Index places the county in the riskiest 9%; that score models loss and vulnerability rather than counting declarations.
- Riskiest 9%
- of U.S. counties for FEMA National Risk Index score
- Relatively Moderate
- FEMA National Risk Index rating
- 22
- FEMA declarations vs 21 national county avg
- 340
- 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.
FEMA OpenFEMA declaration desk
County FIPS 06113 · Yolo County 22 declarations · rank 1359/3,266
DECL-HEAVY · MAJOR-MID · RANK-LOWER · PHOTO-FINISH · NRI-MID · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW
- DECL-HEAVY 22
- MAJOR-MID 73%
- RANK-LOWER #1,359
- PHOTO-FINISH Hardy
- NRI-MID 91
- ACT-HIGH High
- TYPE-LEAD Severe Storm
- VS-ST-BELOW -23%
Nearest declaration peer: Hardy, WV (0 declaration gap)
FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · California state profile
Yolo County in the declaration-count neighbourhood
FEMA declaration records among Yolo County and nearest peers by total count
- Los Angeles · largest
Los Angeles · largest
88 declarations
- Hardy · near 22
Hardy · near
22 declarations
- Prairie · near 22
Prairie · near
22 declarations
- St. Francis · near 22
St. Francis · near
22 declarations
- Yolo · this county 22
Yolo · this county
22 declarations
- Ujelang · smallest 1
Ujelang · smallest
1 declarations
What this shows Yolo County carries 22 FEMA declaration records, ranked 1359 of 3,266 counties in this registry.
How Yolo County's FEMA declaration count compares nationally
Yolo County vs. all counties in this dataset
FEMA disaster declarations, all-time · Yolo County
22 Top 43% higher than 57% of 3,266 counties
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
Yolo County's FEMA Risk Index score
Which hazard drives modeled loss here?
FEMA's modeled annual dollar loss for Yolo County is led by Riverine Flooding (about $42.2M Expected Annual Loss, Historical Loss Ratio Relatively Low), while Drought 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 Yolo County's hazard record show?
Reading the federal records together
The NFIP claims register shows a middle-volume loss record here: 340 paid claims, totaling $3.3M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $9.7K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.
Start with the state benchmark: a California county averages 28.5 federal declaration records, while Yolo County has 22. The gap is 23% 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 sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 91.4/100 (Relatively Moderate). Expected Annual Loss is rated Relatively Moderate (roughly $116.2M in annualized losses). Social vulnerability reads Relatively Low and community resilience Relatively High, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Drought stands out as the sharpest exposure here, rated Very High. FEMA's modeled frequency puts that hazard at 75 modeled event-days per year here, based on 2,114 historical events on record.
64 /100
Historical Activity Index
High historical activity
Yolo County, CA · 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) High
16/30
22 OpenFEMA declarations, full ingest window (1.1x national county average)
County Disaster Density Moderate
10/25
22 declarations (0.8x state county average of 29)
Major Disaster Share High
18/25
16 of 22 declarations are major disasters (73%)
Hazard Diversity Very High
20/20
8 different disaster types declared in Yolo County
FEMA NRI 8-hazard radar - Yolo County
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.
Major Disaster share
73%
Major-heavy
NRI risk score
91
Relatively Moderate
Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release
How often does each hazard strike Yolo 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 |
|---|---|---|
| Drought | Very High | 75 modeled event-days per year |
| Earthquake | Relatively Moderate | roughly once every 15 years |
| Riverine Flooding | Relatively Moderate | roughly once every 1 years |
| Wildfire | Relatively Low | roughly once every 219 years |
| Landslide | Relatively Low | an average of 11 times per year |
| Heat Wave | Relatively Low | 7.2 modeled event-days per year |
| Volcanic Activity | Very Low | roughly once every 10,000 years |
| Lightning | Relatively Low | an average of 5.8 times per year |
| Tornado | Very Low | roughly once every 7 years |
| Hail | Very Low | roughly once every 17 years |
| Strong Wind | Very Low | roughly once every 40 years |
| Avalanche | Very Low | roughly once every 100 years |
| Winter Weather | Very Low | roughly once every 14 years |
Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release
Disaster Types
Severe Storm 7
Flood 6
Fire 3
Biological 2
Hurricane 1
Freezing 1
Coastal Storm 1
Drought 1
What Severe Storm declarations mean here
Severe Storm is the most frequent declaration type on Yolo County's record, 32% 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 - 16 72.7%
of all 22 declarations
Emergency - 4 18.2%
of all 22 declarations
Fire Management - 2 9.1%
of all 22 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2023 | 2 | |
| 2020 | 4 | |
| 2019 | 1 | |
| 2017 | 3 | |
| 2015 | 1 | |
| 2006 | 1 | |
| 2005 | 1 | |
| 1998 | 1 | |
| 1997 | 1 | |
| 1995 | 2 | |
| 1991 | 1 | |
| 1986 | 1 | |
| 1983 | 1 | |
| 1977 | 1 | |
| 1965 | 1 | |
Disaster Declarations
How the 22 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.
Download these 22 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 4683 | SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES | DR | Flood | 2023-01-14 |
| 3591 | SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES | EM | Flood | 2023-01-09 |
| 4558 | WILDFIRES | DR | Fire | 2020-08-22 |
| 5331 | LNU LIGHTNING FIRE COMPLEX | FM | Fire | 2020-08-18 |
| 4482 | COVID-19 PANDEMIC | DR | Biological | 2020-03-22 |
| 3428 | COVID-19 | EM | Biological | 2020-03-13 |
| 4434 | SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES | DR | Severe Storm | 2019-05-17 |
| 4308 | SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES | DR | Flood | 2017-04-01 |
| 4305 | SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES | DR | Flood | 2017-03-16 |
| 4301 | SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES | DR | Severe Storm | 2017-02-14 |
| 5091 | WRAGG FIRE | FM | Fire | 2015-07-23 |
| 1628 | SEVERE STORMS, FLOODING, MUDSLIDES, AND LANDSLIDES | DR | Severe Storm | 2006-02-03 |
| 3248 | HURRICANE KATRINA EVACUATION | EM | Hurricane | 2005-09-13 |
| 1203 | SEVERE WINTER STORMS AND FLOODING | DR | Severe Storm | 1998-02-09 |
| 1155 | SEVERE STORMS, FLOODING, MUD AND LANDSLIDES | DR | Severe Storm | 1997-01-04 |
| 1046 | SEVERE WINTER STORMS, FLOODING LANDSLIDES, MUD FLOW | DR | Severe Storm | 1995-03-12 |
| 1044 | SEVERE WINTER STORMS, FLOODING, LANDSLIDES, MUD FLOWS | DR | Severe Storm | 1995-01-10 |
| 894 | SEVERE FREEZE | DR | Freezing | 1991-02-11 |
| 758 | SEVERE STORMS & FLOODING | DR | Flood | 1986-02-21 |
| 677 | COASTAL STORMS, FLOODS, SLIDES & TORNADOES | DR | Coastal Storm | 1983-02-09 |
Show 2 earlier declaration records
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 3023 | DROUGHT | EM | Drought | 1977-01-20 |
| 183 | HEAVY RAINS & FLOODING | DR | Flood | 1964-12-24 |
Storm Events in California
Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Yolo County.
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| High Wind | 4,070 | 13 | 27 | $228.2M |
| Flood | 3,132 | 26 | 25 | $985.1M |
| Heavy Snow | 1,814 | 6 | 0 | $1.6M |
| Dense Fog | 1,605 | 52 | 148 | $2.8M |
| Drought | 1,421 | 0 | 0 | $0 |
Source: NOAA Storm Events Database State-level aggregated data, 2015-2025
NFIP Flood Insurance Claims
Total Claims
340
Total Paid
$3.3M
Avg Per Claim
$9.7K
Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data
FEMA National Risk Index
Overall Risk
Relatively Moderate
Score: 91.4/100
Expected Annual Loss
Relatively Moderate
$116.2M/year
Social Vulnerability
Relatively Low
Community Resilience
Relatively High
Hazard Risk Breakdown
Drought Very High
Earthquake Relatively Moderate
Riverine Flooding Relatively Moderate
Wildfire Relatively Low
Landslide Relatively Low
Heat Wave Relatively Low
Volcanic Activity Very Low
Lightning Relatively Low
Tornado Very Low
Hail Very Low
Strong Wind Very Low
Avalanche Very Low
Winter Weather Very Low
Cold Wave 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: Drought
Drought is the slowest of the modeled hazards and the least visible: it does its damage to agriculture, water supply and soil over seasons rather than hours, so it rarely produces the kind of single-day damage that drives a disaster declaration. FEMA scores it in event-days per year rather than discrete events for exactly that reason.
Worth noting for Yolo County: the model and the federal record do NOT point at the same hazard. Drought carries the highest modeled rating (Very High), 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
Yolo County's closest FEMA peer: Alexandria (city), VA
Comparisons use published FEMA declaration fields plus the National Risk Index composite for Yolo County. Record similarity, not a safety rating.
Closest declaration profiles
Yolo County shows 22 FEMA declarations, led by Severe Storm.
Similar Major-disaster share
Yolo County: 16 of 22 of its declarations are Major.
Similar modeled NRI score
Yolo County: NRI composite 91.4 (Relatively Moderate).
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 Yolo County - capture-dated entries only.
Compare beyond this state
Nationwide peers by NRI score & FEMA declaration volume
Two PlainHazard-derived comparison paths for Yolo 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.
Similar NRI composite
Nearest out-of-state counties by FEMA NRI score. This county: 91.4 (Relatively Moderate).
Similar declaration volume
Nearest out-of-state counties by FEMA declaration count. This county: 22. NRI peers are excluded so the two link sets stay distinct.
Further reading for this county
Understanding disaster data
Yolo County's NFIP claims file (340 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.
More PlainHazard guides
- Most disaster-prone counties - U.S. counties ranked by FEMA declaration totals.
- Understanding disaster data - declarations vs storm events vs NRI scores.
- Preparing for natural disasters - household checklist (not county-specific advice).
Frequently Asked Questions
What is the most common disaster type in Yolo County?
The most common disaster type in Yolo County is Severe Storm, with 7 declarations. Other disaster types include Flood (6), Fire (3), Biological (2).
How does Yolo County's FEMA declaration record compare with the California average?
The typical California county has 28.5 FEMA declaration records; Yolo County has 22, or 23% fewer. Against the national county mean of 20.7, this county's total is 6% higher. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Yolo County received?
Yolo County has received 16 major disaster declarations, representing 73% of all 22 disaster declarations.
How many flood insurance claims has Yolo County filed?
Yolo County has 340 National Flood Insurance Program (NFIP) claims totaling $3.3M in payments, with an average of $9.7K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Yolo County?
No. In Yolo County, Drought has the highest National Risk Index rating (Very High), while Riverine Flooding leads Expected Annual Loss at about $42.2M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Yolo County?
The most active year for disaster declarations in Yolo County was 2020, with 4 declarations. The county has FEMA disaster data spanning 1965 to 2023.
What is the FEMA National Risk Index score for Yolo County?
According to the FEMA National Risk Index, Yolo County, California has an overall risk score of 91.4 out of 100 (Relatively Moderate). The county's social vulnerability rating is Relatively Low and community resilience is Relatively High. The Expected Annual Loss (EAL) score is Relatively Moderate, representing $116.2M in annualized losses.
Which natural hazard poses the greatest risk to Yolo County?
Based on FEMA NRI data, the highest-risk natural hazard in Yolo County is Drought (risk rating: Very High). Other significant hazards include Earthquake (Relatively Moderate) and Riverine Flooding (Relatively Moderate). FEMA's modeled event frequency puts drought here at 75 modeled event-days per year, drawn from 2,114 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.
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 Yolo County · vintage 2026-08-25 · Methodology · California profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events