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Texas · FEMA + NOAA + National Risk Index

Mason County, TX

20 FEMA disaster declarations (1989-2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Flood.

20
FEMA declarations
12
Major disasters
11
NRI risk · Very Low
Flood
Top hazard

The verdict

Mason County has a nationally busy FEMA history: 20 declarations, more than 46% of counties in this registry. But the state comparison tempers that reading: the total is 4% below the Texas county mean. FEMA's separate National Risk Index places the county safer than 11%; that score models loss and vulnerability rather than counting declarations.

Safer than 11%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
20
FEMA declarations vs 21 national county avg
5
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Major Disaster (DR) and Emergency (EM) records; an EM authorizes a narrower set of federal assistance than a DR.

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FEMA OpenFEMA declaration desk

County FIPS 48319 · Mason County 20 declarations · rank 1731/3,266

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

  • DECL-HEAVY 20
  • MAJOR-MID 60%
  • RANK-LOWER #1,731
  • PHOTO-FINISH Monona
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Flood
  • VS-ST-BELOW -4%

Nearest declaration peer: Monona, IA (0 declaration gap)

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

Mason County in the declaration-count neighbourhood

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

declarations

What this shows Mason County carries 20 FEMA declaration records, ranked 1731 of 3,266 counties in this registry.

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

How Mason County's FEMA declaration count compares nationally

Mason County vs. all counties in this dataset

FEMA disaster declarations, all-time · Mason County

20 46th percentile higher than 46% 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

Mason County's FEMA Risk Index score

0/100100/100Texas avg49/10011/100
FEMA National Risk Index composite score vs. the Texas county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Mason County is led by Riverine Flooding (about $2.0M Expected Annual Loss, Historical Loss Ratio Relatively High), while Drought carries the highest National Risk Index rating (Relatively Moderate). 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 Mason County's hazard record show?

FEMA National Risk Index

FEMA's National Risk Index places this county in the low end of the national distribution, composite score 11.0/100 (Very Low). Expected Annual Loss is rated Very Low (roughly $3.3M in annualized losses). Two modifiers shape how that exposure becomes real-world harm here: social vulnerability (Very High) and community resilience (Relatively Moderate). Among the 18 modeled hazards, Drought carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at 79 modeled event-days per year here, based on 1,988 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 5 claims and $119.1K 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 Texas county averages 20.9 federal declaration records, while Mason County has 20. The gap is 4% 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.

59 /100

Historical Activity Index

High historical activity

Mason County, TX · 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
14/30

20 OpenFEMA declarations, full ingest window (1.0x national county average)

County Disaster Density Moderate
12/25

20 declarations (1.0x state county average of 21)

Major Disaster Share High
15/25

12 of 20 declarations are major disasters (60%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Mason County

FEMA NRI 8-hazard radar - Mason County

Mason County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 8, Tornado 8, Wildfire 25, Drought 48, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 17 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 17 8-hazard mean
Mason County NRI risk profile FIPS 48319 · displayed-hazard mean 17/100
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

20

Above median

Major Disaster share

60%

Major-heavy

NRI risk score

11

Very Low

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

How often does each hazard strike Mason 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 Relatively Moderate 79 modeled event-days per year
Wildfire Relatively Low roughly once every 476 years
Lightning Relatively Low an average of 46 times per year
Hail Relatively Low an average of 3 times per year
Hurricane Very Low roughly once every 84 years
Winter Weather Relatively Low an average of 3.8 times per year
Riverine Flooding Very Low roughly once every 1 years
Heat Wave Very Low 6.8 modeled event-days per year
Tornado Very Low roughly once every 5 years
Landslide Very Low roughly once every 4 years
Strong Wind Very Low roughly once every 1 years
Cold Wave Very Low roughly once every 2 years
Earthquake Very Low roughly once every 4,202 years
Ice Storm Very Low roughly once every 8 years

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

Disaster Types

Flood 5
Fire 4
Severe Storm 3
Hurricane 3
Severe Ice Storm 2
Biological 2
Drought 1

What Flood declarations mean here

Flood is the most frequent declaration type on Mason County's record, 25% 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 - 12 60.0%

of all 20 declarations

Emergency - 8 40.0%

of all 20 declarations

FEMA Declarations Timeline

Year Declarations
2026 1
2025 1
2021 2
2020 2
2019 1
2011 1
2008 1
2007 1
2006 1
2005 3
1999 1
1998 1
1997 1
1993 1
1992 1
Show 1 earlier declaration years
1989 1

Disaster Declarations

How the 20 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 20 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
3649 FLOODING EM Flood 2026-07-18
4879 SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING DR Flood 2025-07-06
4586 SEVERE WINTER STORMS DR Severe Ice Storm 2021-02-19
3554 SEVERE WINTER STORM EM Severe Ice Storm 2021-02-14
4485 COVID-19 PANDEMIC DR Biological 2020-03-25
3458 COVID-19 EM Biological 2020-03-13
4416 SEVERE STORMS AND FLOODING DR Flood 2019-02-25
1999 WILDFIRES DR Fire 2011-07-01
3284 WILDFIRES EM Fire 2008-03-14
1709 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2007-06-29
1624 EXTREME WILDFIRE THREAT DR Fire 2006-01-11
1606 HURRICANE RITA DR Hurricane 2005-09-24
3261 HURRICANE RITA EM Hurricane 2005-09-21
3216 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-02
3142 EXTREME FIRE HAZARDS EM Fire 1999-09-01
1239 TROPICAL STORM CHARLEY DR Severe Storm 1998-08-26
1179 SEVERE STORMS AND FLOODING DR Flood 1997-07-07
3113 EXTREME FIRE HAZARD EM Drought 1993-09-10
930 SEVERE THUNDERSTORMS DR Flood 1991-12-26
828 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1989-05-19

Storm Events in Texas

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

Storm Type Events Fatalities Injuries Property Damage
Hail 14,072 0 15 $7.4B
Thunderstorm Wind 10,293 41 141 $369.9M
Drought 7,032 0 0 $86.0K
Flash Flood 4,728 338 24 $47.6B
Heat 4,079 119 405 $0

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

NFIP Flood Insurance Claims

Total Claims

5

Total Paid

$119.1K

Avg Per Claim

$23.8K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 11.0/100

Expected Annual Loss

Very Low

$3.3M/year

Social Vulnerability

Very High

Community Resilience

Relatively Moderate

Hazard Risk Breakdown

Drought Relatively Moderate
Wildfire Relatively Low
Lightning Relatively Low
Hail Relatively Low
Hurricane Very Low
Winter Weather Relatively Low
Riverine Flooding Very Low
Heat Wave Very Low
Tornado Very Low
Landslide Very Low
Strong Wind Very Low
Cold Wave Very Low
Earthquake Very Low
Ice Storm 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: 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 Mason County: the model and the federal record do NOT point at the same hazard. Drought carries the highest modeled rating (Relatively Moderate), 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

Mason County's closest FEMA peer: Gilmer County, GA

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Mason 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 20 FEMA declarations, Mason 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 Mason County?
The most common disaster type in Mason County is Flood, with 5 declarations. Other disaster types include Fire (4), Severe Storm (3), Hurricane (3).
How does Mason County's FEMA declaration record compare with the Texas average?
The typical Texas county has 20.9 FEMA declaration records; Mason County has 20, or 4% fewer. Against the national county mean of 20.7, this county's total is 3% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Mason County received?
Mason County has received 12 major disaster declarations, representing 60% of all 20 disaster declarations.
How many flood insurance claims has Mason County filed?
Mason County has 5 National Flood Insurance Program (NFIP) claims totaling $119.1K in payments, with an average of $23.8K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Mason County?
No. In Mason County, Drought has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $2.0M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Mason County?
The most active year for disaster declarations in Mason County was 2005, with 3 declarations. The county has FEMA disaster data spanning 1989 to 2026.
What is the FEMA National Risk Index score for Mason County?
According to the FEMA National Risk Index, Mason County, Texas has an overall risk score of 11.0 out of 100 (Very Low). On social vulnerability the county rates Very High; on community resilience, Relatively Moderate. The Expected Annual Loss (EAL) score is Very Low, representing $3.3M in annualized losses.
Which natural hazard poses the greatest risk to Mason County?
FEMA's NRI data points to Mason County is Drought (risk rating: Relatively Moderate). Other significant hazards include Wildfire (Relatively Low) and Lightning (Relatively Low). FEMA's modeled event frequency puts drought here at 79 modeled event-days per year, drawn from 1,988 historical events on record. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
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 Mason County · vintage 2026-08-25 · Methodology · Texas profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events