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Texas · FEMA + NOAA + National Risk Index

Rockwall County, TX

17 FEMA disaster declarations (1966-2024), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Hurricane.

17
FEMA declarations
9
Major disasters
71
NRI risk · Relatively Low
Hurricane
Top hazard

The verdict

Rockwall County has a nationally busy FEMA history: 17 declarations, more than 32% of counties in this registry. But the state comparison tempers that reading: the total is 19% below the Texas county mean. FEMA's separate National Risk Index places the county in the riskiest 29%; that score models loss and vulnerability rather than counting declarations.

Riskiest 29%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
17
FEMA declarations vs 21 national county avg
61
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 48397 · Rockwall County 17 declarations · rank 2108/3,266

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

  • DECL-MID 17
  • MAJOR-MID 53%
  • RANK-LOWER #2,108
  • PHOTO-FINISH Curry
  • NRI-LOW 71
  • ACT-HIGH High
  • TYPE-LEAD Hurricane
  • VS-ST-BELOW -19%

Nearest declaration peer: Curry, OR (0 declaration gap)

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

Rockwall County among counties with fewer federal records

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

declarations

What this shows Rockwall County carries 17 FEMA declaration records, ranked 2108 of 3,266 counties in this registry.

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

Rockwall County versus quieter counties in this dataset

Rockwall County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Rockwall County

17 32nd percentile higher than 32% 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

Rockwall County's FEMA Risk Index score

0/100100/100Texas avg49/10070.7/100
FEMA National Risk Index composite score vs. the Texas county average

What does Rockwall County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 61 paid claims, totaling $1.5M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $24.2K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

Start with the state benchmark: a Texas county averages 20.9 federal declaration records, while Rockwall County has 17. The gap is 19% 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.

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 70.7/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $46.4M in annualized losses), and a Very Low social-vulnerability profile combined with Very High community resilience shapes how much of that raw exposure becomes realized harm. Of the 18 hazards FEMA models, Tornado stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at roughly once every 7 years here, based on 13 historical events on record.

55 /100

Historical Activity Index

High historical activity

Rockwall 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
12/30

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

County Disaster Density Moderate
10/25

17 declarations (0.8x state county average of 21)

Major Disaster Share High
13/25

9 of 17 declarations are major disasters (53%)

Hazard Diversity Very High
20/20

8 different disaster types declared in Rockwall County

FEMA NRI 8-hazard radar - Rockwall County

Rockwall County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 8, Tornado 70, Wildfire 25, Drought 25, Heat Wave 48, Winter Storm 48. The simple mean of these eight displayed scores is 32 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 32 8-hazard mean
Rockwall County NRI risk profile FIPS 48397 · displayed-hazard mean 32/100
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

17

Below median

Major Disaster share

53%

Major-heavy

NRI risk score

71

Relatively Low

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

How often does each hazard strike Rockwall 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
Tornado Relatively High roughly once every 7 years
Hail Relatively Moderate an average of 8 times per year
Heat Wave Relatively Moderate 18 modeled event-days per year
Strong Wind Relatively Moderate an average of 4.4 times per year
Cold Wave Relatively Moderate roughly once every 1 years
Wildfire Relatively Low roughly once every 1,151 years
Riverine Flooding Relatively Low roughly once every 1 years
Ice Storm Relatively Low an average of 1.3 times per year
Earthquake Very Low roughly once every 1,062 years
Lightning Relatively Low an average of 56 times per year
Drought Relatively Low 23 modeled event-days per year
Hurricane Very Low roughly once every 87 years
Winter Weather Relatively Low an average of 4.2 times per year
Landslide Very Low roughly once every 62 years

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

Disaster Types

Severe Storm 3
Fire 3
Hurricane 3
Flood 2
Severe Ice Storm 2
Biological 2
Other 1
Drought 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Rockwall County's federal record, 18% of its declarations. Atlantic tropical systems run on a defined season, 1 June to 30 November, with most activity concentrated between August and October; Pacific and territorial basins run on their own calendars. A single named storm routinely produces one declaration number covering a long corridor of counties at once, well inland as well as on the coast, which is why an affected county's count can jump by several in one year without several separate events having occurred.

One practical distinction matters when reading these records: a tropical declaration usually bundles wind, storm surge and inland rainfall flooding under a single incident, but the insurance behind them is split. Wind damage falls to property insurers, while flood and surge damage is covered only under a separate National Flood Insurance Program policy. That is why a county can show heavy declaration activity and a comparatively small NFIP claims record, or the reverse.

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 - 9 52.9%

of all 17 declarations

Emergency - 8 47.1%

of all 17 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2021 2
2020 2
2016 1
2008 1
2006 1
2005 3
2003 1
1999 1
1998 1
1993 1
1989 1
1966 1

Disaster Declarations

How the 17 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 17 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4781 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Flood 2024-05-17
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
4255 SEVERE WINTER STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2016-02-09
3284 WILDFIRES EM Fire 2008-03-14
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
3171 LOSS OF THE SPACE SHUTTLE COLUMBIA EM Other 2003-02-01
3142 EXTREME FIRE HAZARDS EM Fire 1999-09-01
1239 TROPICAL STORM CHARLEY DR Severe Storm 1998-08-26
3113 EXTREME FIRE HAZARD EM Drought 1993-09-10
828 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1989-05-19
218 SEVERE STORMS & FLOODING DR Flood 1966-05-12

Storm Events in Texas

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

61

Total Paid

$1.5M

Avg Per Claim

$24.2K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 70.7/100

Expected Annual Loss

Relatively Low

$46.4M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

Tornado Relatively High
Hail Relatively Moderate
Heat Wave Relatively Moderate
Strong Wind Relatively Moderate
Cold Wave Relatively Moderate
Wildfire Relatively Low
Riverine Flooding Relatively Low
Ice Storm Relatively Low
Earthquake Very Low
Lightning Relatively Low
Drought Relatively Low
Hurricane Very Low
Winter Weather Relatively Low
Landslide 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: Tornado

Tornado exposure is the most spatially concentrated in the model: total destruction along a narrow corridor with intact property either side. County-level averages therefore understate severity badly for anyone actually in the path, and overstate it for everyone else.

Worth noting for Rockwall County: the model and the federal record do NOT point at the same hazard. Tornado carries the highest modeled rating (Relatively High), while the county's declaration history is led by Hurricane. 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

Rockwall County's closest FEMA peer: Hardin County, TN

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Rockwall 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

Rockwall County's NFIP claims file (61 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 Rockwall County?
The most common disaster type in Rockwall County is Hurricane, with 3 declarations. Other disaster types include Severe Storm (3), Fire (3), Flood (2).
How does Rockwall County's FEMA declaration record compare with the Texas average?
The typical Texas county has 20.9 FEMA declaration records; Rockwall County has 17, or 19% fewer. Against the national county mean of 20.7, this county's total is 18% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Rockwall County received?
Rockwall County has received 9 major disaster declarations, representing 53% of all 17 disaster declarations.
How many flood insurance claims has Rockwall County filed?
Rockwall County has 61 National Flood Insurance Program (NFIP) claims totaling $1.5M in payments, with an average of $24.2K per claim.
What was the worst year for disasters in Rockwall County?
The most active year for disaster declarations in Rockwall County was 2005, with 3 declarations. The county has FEMA disaster data spanning 1966 to 2024.
What is the FEMA National Risk Index score for Rockwall County?
According to the FEMA National Risk Index, Rockwall County, Texas has an overall risk score of 70.7 out of 100 (Relatively Low). The county's social vulnerability rating is Very Low and community resilience is Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $46.4M in annualized losses.
Which natural hazard poses the greatest risk to Rockwall County?
Based on FEMA NRI data, the highest-risk natural hazard in Rockwall County is Tornado (risk rating: Relatively High). Other significant hazards include Hail (Relatively Moderate) and Heat Wave (Relatively Moderate). FEMA's modeled event frequency puts tornado here at roughly once every 7 years, drawn from 13 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 Rockwall County · vintage 2026-08-25 · Methodology · Texas profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events