FEMA Records
10
Total declarations
California · FEMA + NOAA + National Risk Index
Orange County, CA
10 FEMA disaster declarations (2017–2026), with a FEMA National Risk Index rating of Very High. Most common hazard: Fire.
- 10
- FEMA declarations
- 1
- Major disasters
- 100
- NRI risk · Very High
- Fire
- Top hazard
The verdict
Orange County ranks in the riskiest 1% of U.S. counties for FEMA-modeled hazard risk, with more federally declared disasters than 94% of the 2,791 counties FEMA tracks. FEMA rates the county's overall risk as Very High, based on 10 federal disaster declarations recorded since 2017, most often fire, 160% above the national county average of 4.
- Riskiest 1%
- of U.S. counties for FEMA National Risk Index score
- Very High
- FEMA National Risk Index rating
- 10
- FEMA declarations vs 4 national county avg
- 6
- fire declarations, the most common hazard here
FEMA's National Risk Index score reflects expected annual loss, social vulnerability, and community resilience; the declaration count above reflects only Presidentially declared disasters, not every hazard event.
How does Orange County compare?
Orange County vs. every U.S. county
FEMA disaster declarations, all-time
10 Top 6% higher than 94% of 2,791 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 · 2026-07-25
Orange County's FEMA Risk Index score
FEMA National Risk Index composite score vs. the California county average
How disaster-prone is Orange County?
Declaration frequency
Orange County, California has recorded 10 FEMA disaster declarations between 2017 and 2026, of which 1 were classified as Major Disaster declarations (DR) requiring federal individual and public assistance. That puts the county's average at 1.1 declarations per year across a 9-year record, or roughly 29% above the California county average of 7.8 and 160% above the national county average of 3.8. The dominant disaster type on record is Fire, with 6 of 10 declarations falling under this category.
FEMA National Risk Index
This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 99.8/100 (Very High). Expected Annual Loss is rated Very High (roughly $1926.5M in annualized losses). Social vulnerability reads Relatively Low and community resilience Very Low, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Earthquake stands out as the sharpest exposure here, rated Very High.
Flood exposure & the bottom line
Taken together, these indicators place Orange County at a high relative risk level, its federal disaster history outpaces most of the country, and it is worth pairing that record with forward-looking hazard maps before making insurance or relocation decisions.
Risk Assessment
Risk Level
High
vs. California Avg
+29%
State avg: 7.8
vs. National Avg
+160%
National avg: 3.8
Avg Per Year
1.1
Over 9 years
FEMA NRI 8-hazard radar - Orange County
How to read this radar
The radar plots Orange County's relative exposure to the eight headline natural hazards used by the FEMA National Risk Index. Each axis is the qualitative NRI risk rating (Very Low through Very High) re-expressed on a 0-100 scale so that the polygon shape lets you compare a county against another at a glance. A rounder polygon means broad multi-hazard exposure; a spiky polygon means one or two dominant hazards drive most of the modeled risk.
NRI Source
FEMA 2023
Latest NRI release
County FIPS
06059
CA state code
Source: FEMA National Risk Index FEMA National Risk Index Per-county per-hazard ratings, 2023 release
Disaster Types
Fire 6
Flood 2
Chemical 1
Biological 1
Declaration Types
What DR / EM / FM mean
FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).
Fire Management - 6 60.0%
of all 10 declarations
Emergency - 3 30.0%
of all 10 declarations
Major Disaster - 1 10.0%
of all 10 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2026 | 1 | |
| 2023 | 2 | |
| 2022 | 1 | |
| 2021 | 3 | |
| 2020 | 1 | |
| 2018 | 1 | |
| 2017 | 1 | |
Disaster Declarations
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 3646 | CHEMICAL RELEASE | EM | Chemical | 2026-05-25 |
| 3592 | SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES | EM | Flood | 2023-03-10 |
| 3591 | SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES | EM | Flood | 2023-01-09 |
| 5439 | COASTAL FIRE | FM | Fire | 2022-05-12 |
| 5383 | BOND FIRE | FM | Fire | 2020-12-03 |
| 5380 | SILVERADO FIRE | FM | Fire | 2020-10-26 |
| 5381 | BLUE RIDGE FIRE | FM | Fire | 2020-10-26 |
| 4482 | COVID-19 PANDEMIC | DR | Biological | 2020-03-22 |
| 5223 | CANYON 2 FIRE | FM | Fire | 2017-10-09 |
| 5213 | CANYON FIRE | FM | Fire | 2017-09-26 |
Storm Events in California
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| High Wind | 4,876 | 14 | 30 | $229.3M |
| Flood | 3,682 | 33 | 31 | $991.0M |
| Heavy Snow | 2,071 | 6 | 0 | $1.6M |
| Drought | 2,039 | 0 | 0 | $0 |
| Dense Fog | 1,820 | 59 | 164 | $3.5M |
Source: NOAA Storm Events Database NOAA Storm Events Database State-level aggregated data, 2015–2025
FEMA National Risk Index
Overall Risk
Very High
Score: 99.8/100
Expected Annual Loss
Very High
$1926.5M/year
Social Vulnerability
Relatively Low
Community Resilience
Very Low
Hazard Risk Breakdown
Earthquake Very High
Wildfire Relatively High
Landslide Relatively High
Heat Wave Relatively High
Coastal Flooding Relatively High
Tornado Relatively Moderate
Hail Relatively Moderate
Lightning Relatively Moderate
Tsunami Relatively Low
Strong Wind Relatively Moderate
Drought Relatively Low
Avalanche Very Low
Winter Weather Very Low
Cold Wave No Rating
Hurricane No Rating
Source: FEMA National Risk Index (NRI) FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri
Counties with Similar Risk in California
Disaster Preparedness Guides
Related
Frequently Asked Questions
How many natural disasters has Orange County, California had?
Orange County, California has received 10 FEMA disaster declarations from 2017 to 2026. Of these, 1 were major disaster declarations.
What is the most common disaster type in Orange County?
The most common disaster type in Orange County is Fire, with 6 declarations. Other disaster types include Flood (2), Chemical (1), Biological (1).
How does Orange County's disaster risk compare to the California average?
Orange County has 10 disaster declarations, which is 29% higher than the California county average of 7.8 declarations. Compared to the national county average of 3.8, it is 160% higher.
How many major FEMA disaster declarations has Orange County received?
Orange County has received 1 major disaster declaration, representing 10% of all 10 disaster declarations. Major disaster declarations typically involve significant damage requiring federal assistance.
What types of storms are most common in California?
The most common storm types in California include High Wind (4,876 events), Flood (3,682 events), Heavy Snow (2,071 events). NOAA storm event data covers severe weather from 2015 to 2025.
What was the worst year for disasters in Orange County?
The most active year for disaster declarations in Orange County was 2021, with 3 declarations. The county has FEMA disaster data spanning 2017 to 2026.
What is the overall disaster risk level for Orange County?
Orange County has recorded 10 FEMA disaster declarations, a volume FEMA data classifies as high-risk, well above what most U.S. counties see over the same period.
What is the FEMA National Risk Index score for Orange County?
According to the FEMA National Risk Index, Orange County, California has an overall risk score of 99.8 out of 100 (Very High). The county's social vulnerability rating is Relatively Low and community resilience is Very Low. The Expected Annual Loss (EAL) score is Very High, representing $1926.5M in annualized losses.
Which natural hazard poses the greatest risk to Orange County?
Based on FEMA NRI data, the highest-risk natural hazard in Orange County is Earthquake (risk rating: Very High). Other significant hazards include Wildfire (Relatively High) and Landslide (Relatively High). 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.
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.
What this means for Orange County
Orange County, CA runs 29% above the California county average for federal disaster declarations (10 vs 8), a high historical load overall.
- Its most common federal declaration type is fire management (6 of 10) - know the hazards most likely here before they happen. California overview
- See how this county ranks against the rest of the country for disaster frequency. Most-disaster rankings
- Read how to read FEMA declarations, NRI risk scores, and what they do and don't tell you. Disaster-data guide
Historical declaration counts describe past federal response, not a forecast. For current threats, follow the National Weather Service and local officials; in an emergency call 911.
According to the Federal Emergency Management Agency, this profile draws on 2,791 tracked U.S. counties in FEMA's Disaster Declarations Summaries dataset, refreshed as of 2026-07-25. Read our methodology - how this data is sourced, computed, and verified.
All federal data sources used on this page
- FEMA OpenFEMA, Disaster Declarations Summaries v2 - all federally-declared disasters for this county. fema.gov/openfema/disaster-declarations
- FEMA National Risk Index (NRI) - per-county per-hazard risk ratings and expected annual loss. hazards.fema.gov/nri
- NOAA NCEI Storm Events Database - state-level storm/severe-weather event records, 2015–2025. ncdc.noaa.gov/stormevents
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial
Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →
Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. This page draws directly on FEMA federal disaster data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, or report a data error.