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New Jersey · FEMA + NOAA + National Risk Index

Gloucester County, NJ

28 FEMA disaster declarations (1965-2021), with a FEMA National Risk Index rating of Relatively Moderate. Most common hazard: Hurricane.

28
FEMA declarations
17
Major disasters
87
NRI risk · Relatively Moderate
Hurricane
Top hazard

The verdict

Gloucester County has a nationally busy FEMA history: 28 declarations, more than 81% of counties in this registry. But the state comparison tempers that reading: the total is 6% below the New Jersey county mean. FEMA's separate National Risk Index places the county in the riskiest 13%; that score models loss and vulnerability rather than counting declarations.

Riskiest 13%
of U.S. counties for FEMA National Risk Index score
Relatively Moderate
FEMA National Risk Index rating
28
FEMA declarations vs 21 national county avg
709
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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How does Gloucester County compare?

Gloucester County vs. all counties in this dataset

FEMA disaster declarations, all-time

28 Top 19% higher than 81% 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 · 2026-08-03

Gloucester County's FEMA Risk Index score

FEMA National Risk Index composite score vs. the New Jersey county average

0/100100/100New Jersey avg91/10086.6/100
FEMA National Risk Index composite score vs. the New Jersey county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Gloucester County is led by Riverine Flooding (about $40.0M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Winter Weather carries the highest National Risk Index rating (Very 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 Gloucester County's hazard record show?

Reading the federal records together

FEMA's NFIP table contains a substantial paid-claim history for this county: 709 claims and $4.8M in payments. PlainHazard labels 500 or more claims a heavy registry record; that is a reporting bucket, not an official FEMA risk grade. The average paid claim was $6.8K. NFIP totals exclude uninsured flood losses and do not measure how many properties currently carry a policy.

Start with the state benchmark: a New Jersey county averages 29.7 federal declaration records, while Gloucester County has 28. The gap is 6% 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 sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 86.6/100 (Relatively Moderate). Expected Annual Loss is rated Relatively Moderate (roughly $77.0M in annualized losses). Social vulnerability reads Very Low and community resilience Very High, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Winter Weather stands out as the sharpest exposure here, rated Very High. FEMA's modeled frequency puts that hazard at an average of 11 times per year here, based on 203 historical events on record.

Declaration frequency

Nationally, Gloucester County's 28 FEMA records form a high-volume history; within New Jersey, however, the count is 6% below the county mean. 17 entries carry the Major Disaster classification. The largest incident group is Hurricane, appearing 9 times. The full 56-year record averages 0.5 declarations annually. A DR label alone does not say whether Individual Assistance, Public Assistance, or both followed.

67 /100

Historical Activity Index

High historical activity

Gloucester County, NJ · 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

28 OpenFEMA declarations, full ingest window (1.4x national county average)

County Disaster Density Moderate
12/25

28 declarations (0.9x state county average of 30)

Major Disaster Share High
15/25

17 of 28 declarations are major disasters (61%)

Hazard Diversity Very High
20/20

9 different disaster types declared in Gloucester County

Historical Declaration Activity

Activity Band

High

vs. New Jersey Avg

-6%

State avg: 29.7

vs. National Avg

+35%

National avg: 20.7

Avg Per Year

0.5

Over 56 years

FEMA NRI 8-hazard radar - Gloucester County

Gloucester County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 48, Hurricane 48, Tornado 48, Wildfire 25, Drought 48, Heat Wave 48, Winter Storm 92. The simple mean of these eight displayed scores is 48 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 48 8-hazard mean
Gloucester County NRI risk profile FIPS 34015 · displayed-hazard mean 48/100
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

28

High volume

Major Disaster share

61%

Major-heavy

NRI risk score

87

Relatively Moderate

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

How often does each hazard strike Gloucester 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
Winter Weather Very High an average of 11 times per year
Strong Wind Relatively High an average of 5.8 times per year
Heat Wave Relatively Moderate 11 modeled event-days per year
Earthquake Relatively Low roughly once every 618 years
Ice Storm Relatively High roughly once every 1 years
Riverine Flooding Relatively Moderate an average of 2.6 times per year
Coastal Flooding Relatively High an average of 3.7 times per year
Hurricane Relatively Moderate roughly once every 9 years
Lightning Relatively High an average of 35 times per year
Wildfire Relatively Low roughly once every 1,064 years
Cold Wave Relatively Moderate roughly once every 1 years
Drought Relatively Moderate 7.1 modeled event-days per year
Tornado Relatively Moderate roughly once every 7 years
Landslide Very Low roughly once every 13 years
Hail Relatively Low an average of 2 times per year

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

Disaster Types

Hurricane 9
Severe Storm 5
Snowstorm 5
Biological 2
Drought 2
Flood 2
Fire 1
Other 1
Severe Ice Storm 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Gloucester County's federal record, 32% 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 60.7%

of all 28 declarations

Emergency - 11 39.3%

of all 28 declarations

FEMA Declarations Timeline

Year Declarations
2021 3
2020 2
2015 1
2013 2
2011 3
2010 3
2007 1
2005 2
2003 1
2001 2
1999 1
1996 1
1993 1
1981 1
1977 1
Show 3 earlier declaration years
1975 1
1971 1
1965 1

Disaster Declarations

How the 28 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 28 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4614 REMNANTS OF HURRICANE IDA DR Hurricane 2021-09-05
3573 REMNANTS OF HURRICANE IDA EM Hurricane 2021-09-02
4574 TROPICAL STORM ISAIAS DR Hurricane 2020-12-11
4488 COVID-19 PANDEMIC DR Biological 2020-03-25
3451 COVID-19 EM Biological 2020-03-13
4231 SEVERE STORM DR Severe Storm 2015-07-22
4086 HURRICANE SANDY DR Hurricane 2012-10-30
3354 HURRICANE SANDY EM Hurricane 2012-10-28
4033 SEVERE STORMS AND FLOODING DR Severe Storm 2011-09-15
4021 HURRICANE IRENE DR Hurricane 2011-08-31
3332 HURRICANE IRENE EM Hurricane 2011-08-27
1897 SEVERE STORMS AND FLOODING DR Severe Storm 2010-04-02
1889 SEVERE WINTER STORM AND SNOWSTORM DR Snowstorm 2010-03-23
1873 SNOWSTORM DR Snowstorm 2010-02-05
1694 SEVERE STORMS AND INLAND AND COASTAL FLOODING DR Severe Storm 2007-04-26
3257 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-19
1588 SEVERE STORMS AND FLOODING DR Severe Storm 2005-04-19
3181 SNOW EM Snowstorm 2003-03-20
3169 FIRES AND EXPLOSIONS EM Fire 2001-09-19
3156 WEST NILE VIRUS EM Other 2000-11-01
Show 8 earlier declaration records
DR# Title Type Incident Date
3148 HURRICANE FLOYD EMERGENCY DECLARATIONS EM Hurricane 1999-09-17
1088 BLIZZARD OF 96 (SEVERE SNOW STORM) DR Snowstorm 1996-01-13
3106 SEVERE BLIZZARD EM Snowstorm 1993-03-17
3083 WATER SHORTAGE EM Drought 1980-10-19
528 ICE CONDITIONS DR Severe Ice Storm 1977-02-08
477 HEAVY RAINS, HIGH WINDS, HAIL & TORNADOES DR Flood 1975-07-23
310 HEAVY RAINS & FLOODING DR Flood 1971-09-04
205 WATER SHORTAGE DR Drought 1965-08-18

Storm Events in New Jersey

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 2,853 6 27 $33.9M
Winter Weather 1,141 8 114 $0
Flash Flood 955 32 7 $226.8M
Coastal Flood 380 0 0 $2.0M
Winter Storm 361 11 8 $0

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

NFIP Flood Insurance Claims

Total Claims

709

Total Paid

$4.8M

Avg Per Claim

$6.8K

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

FEMA National Risk Index

Overall Risk

Relatively Moderate

Score: 86.6/100

Expected Annual Loss

Relatively Moderate

$77.0M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

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

Winter Weather in the model means the accumulation of snow and cold that disrupts rather than destroys: road closures, roof loads, burst pipes and lost heating. Its costs land heavily on transport and on households least able to absorb an interruption.

Worth noting for Gloucester County: the model and the federal record do NOT point at the same hazard. Winter Weather carries the highest modeled rating (Very 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

Gloucester County's closest FEMA peer: Lewis County, NY

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

Further reading for this county

Understanding disaster data

Gloucester County's NFIP claims file (709 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 Gloucester County?
The most common disaster type in Gloucester County is Hurricane, with 9 declarations. Other disaster types include Severe Storm (5), Snowstorm (5), Biological (2).
How does Gloucester County's FEMA declaration record compare with the New Jersey average?
The typical New Jersey county has 29.7 FEMA declaration records; Gloucester County has 28, or 6% fewer. Against the national county mean of 20.7, this county's total is 35% higher. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Gloucester County received?
Gloucester County has received 17 major disaster declarations, representing 61% of all 28 disaster declarations.
How many flood insurance claims has Gloucester County filed?
Gloucester County has 709 National Flood Insurance Program (NFIP) claims totaling $4.8M in payments, with an average of $6.8K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Gloucester County?
No. In Gloucester County, Winter Weather has the highest National Risk Index rating (Very High), while Riverine Flooding leads Expected Annual Loss at about $40.0M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Gloucester County?
The most active year for disaster declarations in Gloucester County was 2010, with 3 declarations. The county has FEMA disaster data spanning 1965 to 2021.
What is the FEMA National Risk Index score for Gloucester County?
According to the FEMA National Risk Index, Gloucester County, New Jersey has an overall risk score of 86.6 out of 100 (Relatively Moderate). On social vulnerability the county rates Very Low; on community resilience, Very High. The Expected Annual Loss (EAL) score is Relatively Moderate, representing $77.0M in annualized losses.
Which natural hazard poses the greatest risk to Gloucester County?
FEMA's NRI data points to Gloucester County is Winter Weather (risk rating: Very High). Other significant hazards include Strong Wind (Relatively High) and Heat Wave (Relatively Moderate). FEMA's modeled event frequency puts winter weather here at an average of 11 times per year, drawn from 203 historical events on record. 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.

What this means for Gloucester County

Against a New Jersey county mean of 30 declarations, Gloucester County, NJ records 28, or 6% fewer. PlainHazard classifies that historical total as high activity.

  • Major Disaster is the largest group (17 of 28) in a declaration history that remains below its state benchmark; frequency here is not a forecast. New Jersey overview
  • Nationally the county exceeds 81% of recorded county totals, but its own New Jersey benchmark is higher. The ranking keeps those two contexts separate. Most-disaster rankings
  • The large NFIP claims file and FEMA declaration history measure different federal records; the guide explains where they overlap and where they do not. Disaster-data guide

A below-average federal record is not a safety guarantee. Use National Weather Service alerts and local emergency-management notices for present conditions, not this historical comparison.

All federal data sources used on this page
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial

Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →

Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.