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California · FEMA + NOAA + National Risk Index

San Diego County, CA

51 FEMA disaster declarations (1966-2024), with a FEMA National Risk Index rating of Very High. Most common hazard: Fire.

51
FEMA declarations
27
Major disasters
100
NRI risk · Very High
Fire
Top hazard

The verdict

Two federal records point in the busier direction for San Diego County. Its 51 FEMA declarations are 79% above the California county mean and exceed the count for 99% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 1%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 1%
of U.S. counties for FEMA National Risk Index score
Very High
FEMA National Risk Index rating
51
FEMA declarations vs 21 national county avg
2,442
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 06073 · San Diego County 51 declarations · rank 14/3,266

DECL-MEGA · MAJOR-MID · RANK-TOP · PHOTO-FINISH · NRI-HIGH · ACT-HIGH · TYPE-LEAD · VS-ST-HIGH

  • DECL-MEGA 51
  • MAJOR-MID 53%
  • RANK-TOP #14
  • PHOTO-FINISH Oklahoma
  • NRI-HIGH Very High
  • ACT-HIGH High
  • TYPE-LEAD Fire
  • VS-ST-HIGH +79%

Nearest declaration peer: Oklahoma, OK (0 declaration gap)

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

San Diego County among high-volume declaration counties

FEMA declaration records among San Diego County and nearest peers by total count

declarations

What this shows San Diego County carries 51 FEMA declaration records, ranked 14 of 3,266 counties in this registry.

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

Where San Diego County ranks in the national declaration registry

San Diego County vs. high-volume counties in this registry

FEMA disaster declarations, all-time · San Diego County

51 Top 1% higher than 99% 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

San Diego County's FEMA Risk Index score

0/100100/100California avg89/10099.7/100
FEMA National Risk Index composite score vs. the California county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for San Diego County is led by Riverine Flooding (about $647.6M Expected Annual Loss, Historical Loss Ratio Relatively High), while Wildfire 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 San Diego County's hazard record show?

Reading the federal records together

FEMA's NFIP table contains a substantial paid-claim history for this county: 2,442 claims and $48.0M in payments. PlainHazard labels 500 or more claims a heavy registry record; that is a reporting bucket, not an official FEMA risk grade. The average paid claim was $19.7K. NFIP totals exclude uninsured flood losses and do not measure how many properties currently carry a policy.

The declaration register points in the busier direction. San Diego County's 51 federal records stand 79% above the California county mean of 28.5. 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.

FEMA National Risk Index

This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 99.7/100 (Very High). Expected Annual Loss is rated Very High (roughly $1.5B 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, Wildfire stands out as the sharpest exposure here, rated Very High. FEMA's modeled frequency puts that hazard at roughly once every 38 years here.

83 /100

Historical Activity Index

Very High historical activity

San Diego 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) Very High
30/30

51 OpenFEMA declarations, full ingest window (2.5x national county average)

County Disaster Density Very High
22/25

51 declarations (1.8x state county average of 29)

Major Disaster Share High
13/25

27 of 51 declarations are major disasters (53%)

Hazard Diversity Very High
18/20

7 different disaster types declared in San Diego County

FEMA NRI 8-hazard radar - San Diego County

San Diego County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 70, Flood 92, Hurricane 8, Tornado 25, Wildfire 92, Drought 25, Heat Wave 70, Winter Storm 25. The simple mean of these eight displayed scores is 51 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 51 8-hazard mean
San Diego County NRI risk profile FIPS 06073 · displayed-hazard mean 51/100
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

51

Very high volume

Major Disaster share

53%

Major-heavy

NRI risk score

100

Very High

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

How often does each hazard strike San Diego 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
Wildfire Very High roughly once every 38 years
Riverine Flooding Very High an average of 7.9 times per year
Earthquake Relatively High roughly once every 9 years
Landslide Relatively High an average of 177 times per year
Heat Wave Relatively High 10 modeled event-days per year
Lightning Relatively Moderate an average of 11 times per year
Hail Relatively Moderate roughly once every 10 years
Coastal Flooding Relatively Moderate an average of 1.6 times per year
Tornado Relatively Low roughly once every 3 years
Drought Relatively Low 54 modeled event-days per year
Tsunami Relatively Low roughly once every 3 years
Strong Wind Relatively Moderate roughly once every 5 years
Winter Weather Relatively Low an average of 3.7 times per year
Volcanic Activity Very Low roughly once every 10,000 years
Avalanche Very Low roughly once every 100 years
Hurricane Very Low roughly once every 94 years
Cold Wave Very Low roughly once every 16,549 years

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

Disaster Types

Fire 28
Flood 12
Severe Storm 5
Biological 2
Freezing 2
Hurricane 1
Coastal Storm 1

What Fire declarations mean here

Fire is the most frequent declaration type on San Diego County's record, 55% of its declarations. Wildfire is the one hazard here with its own dedicated federal instrument: the Fire Management Assistance Grant, which appears in this data as an FM record. An FMAG can be authorised while a fire is still burning, on a timescale of hours, because its purpose is to reimburse the cost of fighting a fire that threatens to become a major disaster.

That distinction matters when comparing counties. An FM declaration is not a presidential major disaster declaration and does not carry the same assistance programmes, so a fire-heavy county's total is not directly comparable with a hurricane-heavy county's total unless the declaration types are separated, which is why they are listed separately on this page.

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 - 27 52.9%

of all 51 declarations

Fire Management - 18 35.3%

of all 51 declarations

Emergency - 6 11.8%

of all 51 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2023 2
2021 1
2020 2
2018 4
2017 1
2016 1
2014 2
2012 1
2011 1
2008 5
2007 2
2006 2
2005 4
2004 4
Show 16 earlier declaration years
2002 2
1998 1
1997 1
1995 2
1994 1
1993 1
1991 1
1988 1
1985 1
1983 1
1980 1
1978 1
1973 1
1970 1
1967 1
1966 1

Disaster Declarations

How the 51 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 51 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4758 SEVERE STORM AND FLOODING DR Flood 2024-02-19
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
4569 WILDFIRES DR Fire 2020-10-16
4482 COVID-19 PANDEMIC DR Biological 2020-03-22
3428 COVID-19 EM Biological 2020-03-13
5251 WEST FIRE FM Fire 2018-07-06
4353 WILDFIRES, FLOODING, MUDFLOWS, AND DEBRIS FLOWS DR Fire 2018-01-02
3396 WILDFIRES EM Fire 2017-12-08
5228 LILAC FIRE FM Fire 2017-12-07
4305 SEVERE WINTER STORMS, FLOODING, AND MUDSLIDES DR Flood 2017-03-16
5128 BORDER 3 FIRE FM Fire 2016-06-19
5054 POINSETTIA FIRE FM Fire 2014-05-14
5055 COCOS FIRE FM Fire 2014-05-14
5021 SHOCKEY FIRE FM Fire 2012-09-24
1952 SEVERE WINTER STORMS, FLOODING, AND DEBRIS AND MUD FLOWS DR Flood 2011-01-26
1731 WILDFIRES, FLOODING, MUD FLOWS, AND DEBRIS FLOWS DR Fire 2007-10-24
3279 WILDFIRES EM Fire 2007-10-23
2739 RICE FIRE FM Fire 2007-10-22
2734 WITCH FIRE FM Fire 2007-10-21
Show 31 earlier declaration records
DR# Title Type Incident Date
2735 HARRIS FIRE FM Fire 2007-10-21
2729 ANGEL FIRE FM Fire 2007-09-15
1689 SEVERE FREEZE DR Freezing 2007-03-13
2656 HORSE FIRE FM Fire 2006-07-24
2585 BORDER # 50 FIRE FM Fire 2005-10-06
3248 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
2582 SUNDEVIL FIRE FM Fire 2005-09-05
1585 SEVERE STORMS, FLOODING, LANDSLIDES, AND MUD AND DEBRIS FLOWS DR Severe Storm 2005-04-14
1577 SEVERE STORMS, FLOODING, DEBRIS FLOWS, AND MUDSLIDES DR Severe Storm 2005-02-04
2529 CA - MATAGUAY FIRE - 7-13-2004 FM Fire 2004-07-14
1498 WILDFIRES, FLOODING, MUDFLOW AND DEBRIS FLOW DIRECTLY RELATED T DR Fire 2003-10-27
2505 CA-CEDAR FIRE-10-26-2003 FM Fire 2003-10-26
2506 PARADISE FIRE FM Fire 2003-10-26
2456 CA - PINES FIRE - 07/30/02 FM Fire 2002-07-30
2396 GAVILAN FIRE FM Fire 2002-02-11
1203 SEVERE WINTER STORMS AND FLOODING DR Severe Storm 1998-02-09
3120 SEVERE FIRESTORMS EM Fire 1996-10-23
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
1005 FIRES, MUD/LANDSLIDES, FLOODING, SOIL EROSION DR Fire 1993-10-28
979 SEVERE WINTER STORM, MUD & LAND SLIDES, & FLOODING DR Flood 1993-02-03
894 SEVERE FREEZE DR Freezing 1991-02-11
812 SEVERE STORMS, HIGH TIDES & FLOODING DR Flood 1988-02-05
739 GRASS, WILDLANDS, & FOREST FIRES DR Fire 1985-07-18
677 COASTAL STORMS, FLOODS, SLIDES & TORNADOES DR Coastal Storm 1983-02-09
615 SEVERE STORMS, MUDSLIDES & FLOODING DR Flood 1980-02-21
547 COASTAL STORMS, MUDSLIDES & FLOODING DR Flood 1978-02-15
364 SEVERE STORMS, HIGH TIDES & FLOODING DR Flood 1973-02-08
295 FOREST & BRUSH FIRES DR Fire 1970-09-29
223 SEVERE STORMS & FLOODING DR Flood 1967-01-02
211 HEAVY RAINS & FLOODING DR Flood 1965-12-07

Storm Events in California

Statewide NOAA context only. PlainHazard does not currently attribute these state totals to San Diego 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

2,442

Total Paid

$48.0M

Avg Per Claim

$19.7K

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

FEMA National Risk Index

Overall Risk

Very High

Score: 99.7/100

Expected Annual Loss

Very High

$1.5B/year

Social Vulnerability

Relatively Low

Community Resilience

Very Low

Hazard Risk Breakdown

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

Wildfire risk in the model reflects fuel, terrain, weather and how much development sits in the wildland-urban interface. It is one of the few hazards where the exposure is materially changed by land management and building choices, not only by where the county happens to be.

For San Diego County the two measures on this page point the same way: Wildfire is the county's highest-rated modeled hazard (Very High), and Fire declarations also lead its federal record. Where the model and the declaration history agree, the reading is comparatively straightforward, the hazard is both expected and repeatedly realised.

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

San Diego County's closest FEMA peer: St. Charles Parish, LA

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for San Diego 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

San Diego County's NFIP claims file (2,442 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 San Diego County?
The most common disaster type in San Diego County is Fire, with 28 declarations. Other disaster types include Flood (12), Severe Storm (5), Biological (2).
How does San Diego County's FEMA declaration record compare with the California average?
FEMA lists 51 declaration records for San Diego County. That is 79% above the California county mean of 28.5. Its count is also 146% above 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 San Diego County received?
San Diego County has received 27 major disaster declarations, representing 53% of all 51 disaster declarations.
How many flood insurance claims has San Diego County filed?
San Diego County has 2,442 National Flood Insurance Program (NFIP) claims totaling $48.0M in payments, with an average of $19.7K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in San Diego County?
No. In San Diego County, Wildfire has the highest National Risk Index rating (Very High), while Riverine Flooding leads Expected Annual Loss at about $647.6M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in San Diego County?
The most active year for disaster declarations in San Diego County was 2008, with 5 declarations. The county has FEMA disaster data spanning 1966 to 2024.
What is the FEMA National Risk Index score for San Diego County?
According to the FEMA National Risk Index, San Diego County, California has an overall risk score of 99.7 out of 100 (Very High). Social vulnerability here rates Relatively Low, while community resilience comes in at Very Low. The Expected Annual Loss (EAL) score is Very High, representing $1.5B in annualized losses.
Which natural hazard poses the greatest risk to San Diego County?
The top hazard flagged by FEMA's NRI for San Diego County as of the latest release is Wildfire (risk rating: Very High). Other significant hazards include Riverine Flooding (Very High) and Earthquake (Relatively High). FEMA's modeled event frequency puts wildfire here at roughly once every 38 years. 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 San Diego County · vintage 2026-08-25 · Methodology · California profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events