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Texas · FEMA + NOAA + National Risk Index

Grimes County, TX

27 FEMA disaster declarations (1993-2024), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Hurricane.

27
FEMA declarations
17
Major disasters
57
NRI risk · Relatively Low
Hurricane
Top hazard

The verdict

Two federal records point in the busier direction for Grimes County. Its 27 FEMA declarations are 29% above the Texas county mean and exceed the count for 78% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 43%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 43%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
27
FEMA declarations vs 21 national county avg
89
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 48185 · Grimes County 27 declarations · rank 699/3,266

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

  • DECL-HEAVY 27
  • MAJOR-MID 63%
  • RANK-MID #699
  • PHOTO-FINISH Greene
  • NRI-LOW 57
  • ACT-HIGH High
  • TYPE-LEAD Hurricane
  • VS-ST-ABOVE +29%

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

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

Grimes County among high-volume declaration counties

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

declarations

What this shows Grimes County carries 27 FEMA declaration records, ranked 699 of 3,266 counties in this registry.

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

Where Grimes County ranks in the national declaration registry

Grimes County vs. high-volume counties in this registry

FEMA disaster declarations, all-time · Grimes County

27 Top 22% higher than 78% 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

Grimes County's FEMA Risk Index score

0/100100/100Texas avg49/10057/100
FEMA National Risk Index composite score vs. the Texas county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Grimes County is led by Riverine Flooding (about $3.1M Expected Annual Loss, Historical Loss Ratio Very Low), while Drought carries the highest National Risk Index rating (Relatively 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 Grimes County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 89 paid claims, totaling $1.4M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $15.6K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

The declaration register points in the busier direction. Grimes County's 27 federal records stand 29% above the Texas county mean of 20.9. 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 carries a high composite score on FEMA's National Risk Index, 57.0/100, rated Relatively Low. Its Expected Annual Loss rating is Very Low (roughly $14.4M in annualized losses), and a Relatively High social-vulnerability profile combined with Relatively Low community resilience shapes how much of that raw exposure becomes realized harm. Of the 18 hazards FEMA models, Drought stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at 26 modeled event-days per year here, based on 847 historical events on record.

72 /100

Historical Activity Index

High historical activity

Grimes 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) High
20/30

27 OpenFEMA declarations, full ingest window (1.3x national county average)

County Disaster Density High
16/25

27 declarations (1.3x state county average of 21)

Major Disaster Share High
16/25

17 of 27 declarations are major disasters (63%)

Hazard Diversity Very High
20/20

8 different disaster types declared in Grimes County

FEMA NRI 8-hazard radar - Grimes County

Grimes County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 48, Tornado 48, Wildfire 8, Drought 70, Heat Wave 25, Winter Storm 48. The simple mean of these eight displayed scores is 35 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 35 8-hazard mean
Grimes County NRI risk profile FIPS 48185 · displayed-hazard mean 35/100
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

27

High volume

Major Disaster share

63%

Major-heavy

NRI risk score

57

Relatively Low

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

How often does each hazard strike Grimes 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 High 26 modeled event-days per year
Hurricane Relatively Moderate roughly once every 10 years
Cold Wave Relatively Moderate roughly once every 1 years
Lightning Relatively Moderate an average of 65 times per year
Tornado Relatively Moderate roughly once every 2 years
Wildfire Very Low roughly once every 750 years
Heat Wave Relatively Low 12 modeled event-days per year
Ice Storm Relatively Low roughly once every 1 years
Strong Wind Relatively Low an average of 1.6 times per year
Riverine Flooding Relatively Low an average of 1.3 times per year
Hail Very Low an average of 2.4 times per year
Earthquake Very Low roughly once every 1,901 years
Winter Weather Very Low an average of 2.3 times per year
Landslide Very Low roughly once every 10 years

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

Disaster Types

Hurricane 7
Flood 6
Fire 6
Severe Ice Storm 2
Biological 2
Severe Storm 2
Coastal Storm 1
Drought 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Grimes County's federal record, 26% 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 - 17 63.0%

of all 27 declarations

Emergency - 8 29.6%

of all 27 declarations

Fire Management - 2 7.4%

of all 27 declarations

FEMA Declarations Timeline

Year Declarations
2024 2
2021 2
2020 3
2019 1
2017 1
2016 2
2015 1
2011 3
2008 2
2006 1
2005 3
2001 1
1999 2
1998 1
1995 1
Show 1 earlier declaration years
1993 1

Disaster Declarations

How the 27 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 27 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4798 HURRICANE BERYL DR Hurricane 2024-07-09
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
3540 TROPICAL STORMS MARCO AND LAURA EM Hurricane 2020-08-24
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
4332 HURRICANE HARVEY DR Hurricane 2017-08-25
4272 SEVERE STORMS AND FLOODING DR Flood 2016-06-11
4269 SEVERE STORMS AND FLOODING DR Flood 2016-04-25
4223 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS AND FLOODING DR Severe Storm 2015-05-29
4029 WILDFIRES DR Fire 2011-09-09
2964 RILEY ROAD FIRE FM Fire 2011-09-06
2927 DYER MILL FIRE FM Fire 2011-06-20
1791 HURRICANE IKE DR Hurricane 2008-09-13
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
Show 7 earlier declaration records
DR# Title Type Incident Date
3216 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-02
1379 TX-TROPICAL STORM ALLISON-06-06-2001 DR Coastal Storm 2001-06-09
3142 EXTREME FIRE HAZARDS EM Fire 1999-09-01
1257 TX-FLOODING 10/18/98 DR Flood 1998-10-21
1239 TROPICAL STORM CHARLEY DR Severe Storm 1998-08-26
1041 SEVERE THUNDERSTORMS AND FLOODING DR Flood 1994-10-18
3113 EXTREME FIRE HAZARD EM Drought 1993-09-10

Storm Events in Texas

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

89

Total Paid

$1.4M

Avg Per Claim

$15.6K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 57.0/100

Expected Annual Loss

Very Low

$14.4M/year

Social Vulnerability

Relatively High

Community Resilience

Relatively Low

Hazard Risk Breakdown

Drought Relatively High
Hurricane Relatively Moderate
Cold Wave Relatively Moderate
Lightning Relatively Moderate
Tornado Relatively Moderate
Wildfire Very Low
Heat Wave Relatively Low
Ice Storm Relatively Low
Strong Wind Relatively Low
Riverine Flooding Relatively Low
Hail Very Low
Earthquake Very Low
Winter Weather Very 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: 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 Grimes County: the model and the federal record do NOT point at the same hazard. Drought 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

Grimes County's closest FEMA peer: Otsego County, NY

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Grimes 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

Grimes County's NFIP claims file (89 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 Grimes County?
The most common disaster type in Grimes County is Hurricane, with 7 declarations. Other disaster types include Flood (6), Fire (6), Severe Ice Storm (2).
How does Grimes County's FEMA declaration record compare with the Texas average?
FEMA lists 27 declaration records for Grimes County. That is 29% above the Texas county mean of 20.9. Its count is also 30% 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 Grimes County received?
Grimes County has received 17 major disaster declarations, representing 63% of all 27 disaster declarations.
How many flood insurance claims has Grimes County filed?
Grimes County has 89 National Flood Insurance Program (NFIP) claims totaling $1.4M in payments, with an average of $15.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Grimes County?
No. In Grimes County, Drought has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $3.1M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Grimes County?
The most active year for disaster declarations in Grimes County was 2005, with 3 declarations. The county has FEMA disaster data spanning 1993 to 2024.
What is the FEMA National Risk Index score for Grimes County?
According to the FEMA National Risk Index, Grimes County, Texas has an overall risk score of 57.0 out of 100 (Relatively Low). The county's social vulnerability rating is Relatively High and community resilience is Relatively Low. The Expected Annual Loss (EAL) score is Very Low, representing $14.4M in annualized losses.
Which natural hazard poses the greatest risk to Grimes County?
The top hazard flagged by FEMA's NRI for Grimes County as of the latest release is Drought (risk rating: Relatively High). Other significant hazards include Hurricane (Relatively Moderate) and Cold Wave (Relatively Moderate). FEMA's modeled event frequency puts drought here at 26 modeled event-days per year, drawn from 847 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 Grimes County · vintage 2026-08-25 · Methodology · Texas profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events