PlainHazard

If you are in immediate danger, call 911.

The data below is historical (NOAA Storm Events / FEMA), not a live alert. For current warnings and evacuation orders, check the National Weather Service, Ready.gov, or FEMA.gov.

New Mexico · FEMA + NOAA + National Risk Index

Los Alamos County, NM

10 FEMA disaster declarations (2000-2022), with a FEMA National Risk Index rating of Very Low. Most common hazard: Fire.

10
FEMA declarations
6
Major disasters
4
NRI risk · Very Low
Fire
Top hazard

The verdict

Los Alamos County has a nationally busy FEMA history: 10 declarations, more than 10% of counties in this registry. But the state comparison tempers that reading: the total is 20% below the New Mexico county mean. FEMA's separate National Risk Index places the county safer than 4%; that score models loss and vulnerability rather than counting declarations.

Safer than 4%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
10
FEMA declarations vs 21 national county avg
10
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.

View my watchlist

FEMA OpenFEMA declaration desk

County FIPS 35028 · Los Alamos County 10 declarations · rank 2891/3,266

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

  • DECL-MID 10
  • MAJOR-MID 60%
  • RANK-LOWER #2,891
  • PHOTO-FINISH Cheyenne
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Fire
  • VS-ST-BELOW -20%

Nearest declaration peer: Cheyenne, NE (0 declaration gap)

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

Los Alamos County among counties with fewer federal records

FEMA declaration records among Los Alamos County and nearest peers by total count

declarations

What this shows Los Alamos County carries 10 FEMA declaration records, ranked 2891 of 3,266 counties in this registry.

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

Los Alamos County versus quieter counties in this dataset

Los Alamos County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Los Alamos County

10 10th percentile higher than 10% 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

Los Alamos County's FEMA Risk Index score

0/100100/100New Mexico avg59/1003.6/100
FEMA National Risk Index composite score vs. the New Mexico county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Los Alamos County is led by Riverine Flooding (about $2.9M Expected Annual Loss, Historical Loss Ratio Relatively High), while Wildfire carries the highest National Risk Index rating (Relatively Low). 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 Los Alamos County's hazard record show?

FEMA National Risk Index

This county sits at the very bottom of FEMA's National Risk Index nationally, a composite score of 3.6/100 (rated Very Low). Projected losses are minimal, Expected Annual Loss reads Very Low (roughly $5.3M in annualized losses), and the county's exposure is shaped by a Very Low social-vulnerability profile and Very High community resilience. Even the county's top-rated hazard, Wildfire, only reaches Relatively Low on FEMA's scale, none of the 18 modeled hazards stand out here. FEMA's modeled frequency puts that hazard at roughly once every 382 years here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 10 claims and $30.9K 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 New Mexico county averages 12.5 federal declaration records, while Los Alamos County has 10. The gap is 20% 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.

42 /100

Historical Activity Index

Moderate historical activity

Los Alamos County, NM · 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

10 OpenFEMA declarations, full ingest window (0.5x national county average)

County Disaster Density Moderate
10/25

10 declarations (0.8x state county average of 12)

Major Disaster Share High
15/25

6 of 10 declarations are major disasters (60%)

Hazard Diversity High
10/20

4 different disaster types declared in Los Alamos County

FEMA NRI 8-hazard radar - Los Alamos County

Los Alamos County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 0, Tornado 8, Wildfire 25, Drought 0, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 10 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 10 8-hazard mean
Los Alamos County NRI risk profile FIPS 35028 · displayed-hazard mean 10/100
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

10

Low volume

Major Disaster share

60%

Major-heavy

NRI risk score

4

Very Low

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

How often does each hazard strike Los Alamos 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 Relatively Low roughly once every 382 years
Landslide Relatively Low roughly once every 13 years
Earthquake Very Low roughly once every 502 years
Winter Weather Relatively Low an average of 27 times per year
Lightning Relatively Low an average of 69 times per year
Riverine Flooding Very Low roughly once every 3 years
Hail Very Low roughly once every 1 years
Avalanche Very Low roughly once every 100 years
Cold Wave Very Low roughly once every 19 years
Heat Wave Very Low 0.3 modeled event-days per year
Tornado Very Low roughly once every 155 years
Strong Wind Very Low roughly once every 5 years
Ice Storm Very Low roughly once every 67 years
Drought No Rating 94 modeled event-days per year

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

Disaster Types

Fire 4
Flood 3
Biological 2
Hurricane 1

What Fire declarations mean here

Fire is the most frequent declaration type on Los Alamos County's record, 40% 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 - 6 60.0%

of all 10 declarations

Emergency - 3 30.0%

of all 10 declarations

Fire Management - 1 10.0%

of all 10 declarations

FEMA Declarations Timeline

Year Declarations
2022 1
2020 2
2014 1
2012 2
2011 1
2005 1
2000 2

Disaster Declarations

How the 10 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 10 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4652 WILDFIRES, STRAIGHT-LINE WINDS, FLOODING, MUDFLOWS, AND DEBRIS FLOWS DR Fire 2022-05-04
4529 COVID-19 PANDEMIC DR Biological 2020-04-05
3460 COVID-19 EM Biological 2020-03-13
4152 SEVERE STORMS, FLOODING, AND MUDSLIDES DR Flood 2013-10-29
4079 FLOODING DR Flood 2012-08-24
4047 FLOODING DR Flood 2011-11-23
2933 LAS CONCHAS FIRE FM Fire 2011-06-26
3229 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-07
1329 SEVERE FOREST FIRE DR Fire 2000-05-13
3154 SEVERE FIRE THREATS EM Fire 2000-05-10

Storm Events in New Mexico

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

Storm Type Events Fatalities Injuries Property Damage
Drought 3,382 0 0 $0
High Wind 2,351 0 3 $18.9M
Hail 1,669 1 24 $17.2M
Heavy Snow 986 6 72 $2.5M
Thunderstorm Wind 952 1 13 $25.1M

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

NFIP Flood Insurance Claims

Total Claims

10

Total Paid

$30.9K

Avg Per Claim

$3.1K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 3.6/100

Expected Annual Loss

Very Low

$5.3M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

Wildfire Relatively Low
Landslide Relatively Low
Earthquake Very Low
Winter Weather Relatively Low
Lightning Relatively Low
Riverine Flooding Very Low
Hail Very Low
Avalanche Very Low
Cold Wave Very Low
Heat Wave Very Low
Tornado Very Low
Strong Wind Very Low
Ice Storm Very Low
Drought No Rating
Volcanic Activity 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: 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 Los Alamos County the two measures on this page point the same way: Wildfire is the county's highest-rated modeled hazard (Relatively Low), 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

Los Alamos County's closest FEMA peer: Polk County, WI

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Los Alamos 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 10 FEMA declarations, Los Alamos 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 Los Alamos County?
The most common disaster type in Los Alamos County is Fire, with 4 declarations. Other disaster types include Flood (3), Biological (2), Hurricane (1).
How does Los Alamos County's FEMA declaration record compare with the New Mexico average?
The typical New Mexico county has 12.5 FEMA declaration records; Los Alamos County has 10, or 20% fewer. Against the national county mean of 20.7, this county's total is 52% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Los Alamos County received?
Los Alamos County has received 6 major disaster declarations, representing 60% of all 10 disaster declarations.
How many flood insurance claims has Los Alamos County filed?
Los Alamos County has 10 National Flood Insurance Program (NFIP) claims totaling $30.9K in payments, with an average of $3.1K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Los Alamos County?
No. In Los Alamos County, Wildfire has the highest National Risk Index rating (Relatively Low), while Riverine Flooding leads Expected Annual Loss at about $2.9M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Los Alamos County?
The most active year for disaster declarations in Los Alamos County was 2000, with 2 declarations. The county has FEMA disaster data spanning 2000 to 2022.
What is the FEMA National Risk Index score for Los Alamos County?
According to the FEMA National Risk Index, Los Alamos County, New Mexico has an overall risk score of 3.6 out of 100 (Very Low). The county's social vulnerability rating is Very Low and community resilience is Very High. The Expected Annual Loss (EAL) score is Very Low, representing $5.3M in annualized losses.
Which natural hazard poses the greatest risk to Los Alamos County?
Based on FEMA NRI data, the highest-risk natural hazard in Los Alamos County as of the latest release is Wildfire (risk rating: Relatively Low). Other significant hazards include Landslide (Relatively Low) and Earthquake (Very Low). FEMA's modeled event frequency puts wildfire here at roughly once every 382 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 Los Alamos County · vintage 2026-08-25 · Methodology · New Mexico profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events