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California · FEMA + NOAA + National Risk Index

Inyo County, CA

16 FEMA disaster declarations (1967-2024), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

16
FEMA declarations
11
Major disasters
79
NRI risk · Relatively Low
Flood
Top hazard

The verdict

Inyo County has a nationally busy FEMA history: 16 declarations, more than 27% of counties in this registry. But the state comparison tempers that reading: the total is 44% below the California county mean. FEMA's separate National Risk Index places the county in the riskiest 21%; that score models loss and vulnerability rather than counting declarations.

Riskiest 21%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
16
FEMA declarations vs 21 national county avg
4
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 06027 · Inyo County 16 declarations · rank 2337/3,266

DECL-MID · MAJOR-MID · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW

  • DECL-MID 16
  • MAJOR-MID 69%
  • RANK-LOWER #2,337
  • PHOTO-FINISH Greene
  • NRI-LOW 79
  • ACT-HIGH High
  • TYPE-LEAD Flood
  • VS-ST-BELOW -44%

Nearest declaration peer: Greene, GA (0 declaration gap)

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

Inyo County among counties with fewer federal records

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

declarations

What this shows Inyo County carries 16 FEMA declaration records, ranked 2337 of 3,266 counties in this registry.

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

Inyo County versus quieter counties in this dataset

Inyo County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Inyo County

16 27th percentile higher than 27% 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

Inyo County's FEMA Risk Index score

0/100100/100California avg89/10079.3/100
FEMA National Risk Index composite score vs. the California county average

What does Inyo County's hazard record show?

FEMA National Risk Index

This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 79.3/100 (Relatively Low). Expected Annual Loss is rated Relatively Low (roughly $28.3M in annualized losses). Social vulnerability reads Very High and community resilience Relatively Low, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Heat Wave stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at 10 modeled event-days per year here, based on 61 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 4 claims and $11.7K 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.

Start with the state benchmark: a California county averages 28.5 federal declaration records, while Inyo County has 16. The gap is 44% 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.

51 /100

Historical Activity Index

High historical activity

Inyo 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) Moderate
12/30

16 OpenFEMA declarations, full ingest window (0.8x national county average)

County Disaster Density Moderate
7/25

16 declarations (0.6x state county average of 29)

Major Disaster Share High
17/25

11 of 16 declarations are major disasters (69%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Inyo County

FEMA NRI 8-hazard radar - Inyo County

Inyo County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 48, Flood 25, Hurricane 0, Tornado 8, Wildfire 25, Drought 8, Heat Wave 70, Winter Storm 25. 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
Inyo County NRI risk profile FIPS 06027 · 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

16

Below median

Major Disaster share

69%

Major-heavy

NRI risk score

79

Relatively Low

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

How often does each hazard strike Inyo 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
Heat Wave Relatively High 10 modeled event-days per year
Avalanche Very High roughly once every 6 years
Earthquake Relatively Moderate roughly once every 12 years
Wildfire Relatively Low roughly once every 437 years
Landslide Relatively Low an average of 31 times per year
Volcanic Activity Very Low roughly once every 1,111 years
Riverine Flooding Relatively Low an average of 5 times per year
Winter Weather Relatively Low an average of 4.6 times per year
Lightning Relatively Low an average of 16 times per year
Drought Very Low 153 modeled event-days per year
Tornado Very Low roughly once every 10 years
Cold Wave Very Low roughly once every 3,764,775 years
Strong Wind Very Low roughly once every 15 years
Hail Very Low roughly once every 49 years

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

Disaster Types

Flood 7
Severe Storm 3
Hurricane 2
Biological 2
Fire 1
Drought 1

What Flood declarations mean here

Flood is the most frequent declaration type on Inyo County's record, 44% 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 - 11 68.8%

of all 16 declarations

Emergency - 4 25.0%

of all 16 declarations

Fire Management - 1 6.3%

of all 16 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2023 3
2020 2
2017 2
2011 1
2007 1
2005 1
1995 1
1978 1
1977 1
1969 1
1967 1

Disaster Declarations

How the 16 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 16 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4750 TROPICAL STORM HILARY DR Hurricane 2023-11-21
4699 SEVERE WINTER STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Severe Storm 2023-04-03
3592 SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES EM Flood 2023-03-10
4683 SEVERE WINTER STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Flood 2023-01-14
4482 COVID-19 PANDEMIC DR Biological 2020-03-22
3428 COVID-19 EM Biological 2020-03-13
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
1952 SEVERE WINTER STORMS, FLOODING, AND DEBRIS AND MUD FLOWS DR Flood 2011-01-26
2706 INYO FIRE COMPLEX FM Fire 2007-07-07
3248 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
1046 SEVERE WINTER STORMS, FLOODING LANDSLIDES, MUD FLOW DR Severe Storm 1995-03-12
547 COASTAL STORMS, MUDSLIDES & FLOODING DR Flood 1978-02-15
3023 DROUGHT EM Drought 1977-01-20
253 SEVERE STORMS & FLOODING DR Flood 1969-01-26
223 SEVERE STORMS & FLOODING DR Flood 1967-01-02

Storm Events in California

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

4

Total Paid

$11.7K

Avg Per Claim

$2.9K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 79.3/100

Expected Annual Loss

Relatively Low

$28.3M/year

Social Vulnerability

Very High

Community Resilience

Relatively Low

Hazard Risk Breakdown

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

Heat Wave is measured in event-days per year rather than discrete events, and it is the hazard whose harm is most consistently undercounted: its toll is health and mortality, concentrated among people without cooling, rather than visible damage to property.

Worth noting for Inyo County: the model and the federal record do NOT point at the same hazard. Heat Wave carries the highest modeled rating (Relatively 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

Inyo County's closest FEMA peer: Maury County, TN

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Inyo 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

Most disaster-prone counties

With 16 FEMA declarations, Inyo County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Inyo County?
The most common disaster type in Inyo County is Flood, with 7 declarations. Other disaster types include Severe Storm (3), Hurricane (2), Biological (2).
How does Inyo County's FEMA declaration record compare with the California average?
The typical California county has 28.5 FEMA declaration records; Inyo County has 16, or 44% fewer. Against the national county mean of 20.7, this county's total is 23% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Inyo County received?
Inyo County has received 11 major disaster declarations, representing 69% of all 16 disaster declarations.
How many flood insurance claims has Inyo County filed?
Inyo County has 4 National Flood Insurance Program (NFIP) claims totaling $11.7K in payments, with an average of $2.9K per claim.
What was the worst year for disasters in Inyo County?
The most active year for disaster declarations in Inyo County was 2023, with 3 declarations. The county has FEMA disaster data spanning 1967 to 2024.
What is the FEMA National Risk Index score for Inyo County?
According to the FEMA National Risk Index, Inyo County, California has an overall risk score of 79.3 out of 100 (Relatively Low). The county's social vulnerability rating is Very High and community resilience is Relatively Low. The Expected Annual Loss (EAL) score is Relatively Low, representing $28.3M in annualized losses.
Which natural hazard poses the greatest risk to Inyo County?
The top hazard flagged by FEMA's NRI for Inyo County as of the latest release is Heat Wave (risk rating: Relatively High). Other significant hazards include Avalanche (Very High) and Earthquake (Relatively Moderate). FEMA's modeled event frequency puts heat wave here at 10 modeled event-days per year, drawn from 61 historical events on record. 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.

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 Inyo County · vintage 2026-08-25 · Methodology · California profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events