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Pennsylvania · FEMA + NOAA + National Risk Index

Northumberland County, PA

19 FEMA disaster declarations (1972-2020), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

19
FEMA declarations
13
Major disasters
79
NRI risk · Relatively Low
Flood
Top hazard

The verdict

Two federal records point in the busier direction for Northumberland County. Its 19 FEMA declarations are 2% above the Pennsylvania county mean and exceed the count for 41% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 21%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 21%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
19
FEMA declarations vs 21 national county avg
1,721
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 Northumberland County compare?

Northumberland County vs. all counties in this dataset

FEMA disaster declarations, all-time

19 41st percentile higher than 41% 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

Northumberland County's FEMA Risk Index score

FEMA National Risk Index composite score vs. the Pennsylvania county average

0/100100/100Pennsylvania avg67/10079.2/100
FEMA National Risk Index composite score vs. the Pennsylvania county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Northumberland County is led by Riverine Flooding (about $30.2M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Winter Weather 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 Northumberland County's hazard record show?

Reading the federal records together

FEMA's NFIP table contains a substantial paid-claim history for this county: 1,721 claims and $24.2M 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 $14.1K. NFIP totals exclude uninsured flood losses and do not measure how many properties currently carry a policy.

The declaration register points in the busier direction. Northumberland County's 19 federal records stand 2% above the Pennsylvania county mean of 18.6. 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 sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 79.2/100 (Relatively Low). Expected Annual Loss is rated Relatively Low (roughly $37.3M in annualized losses). Social vulnerability reads Relatively Moderate 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 Relatively High. FEMA's modeled frequency puts that hazard at an average of 13 times per year here, based on 243 historical events on record.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 19 entries for Northumberland County, including 13 Major Disaster records, 2% above the Pennsylvania county mean. Across the 48-year span, that works out to 0.4 declarations a year. Flood leads the file with 7 entries. Declaration type records the federal action taken, not every assistance program approved.

59 /100

Historical Activity Index

High historical activity

Northumberland County, PA · 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

19 OpenFEMA declarations, full ingest window (0.9x national county average)

County Disaster Density High
13/25

19 declarations (1.0x state county average of 19)

Major Disaster Share High
17/25

13 of 19 declarations are major disasters (68%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Northumberland County

Historical Declaration Activity

Activity Band

High

vs. Pennsylvania Avg

+2%

State avg: 18.6

vs. National Avg

-8%

National avg: 20.7

Avg Per Year

0.4

Over 48 years

FEMA NRI 8-hazard radar - Northumberland County

Northumberland County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 48, Hurricane 25, Tornado 25, Wildfire 8, Drought 0, Heat Wave 25, Winter Storm 70. The simple mean of these eight displayed scores is 28 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 28 8-hazard mean
Northumberland County NRI risk profile FIPS 42097 · displayed-hazard mean 28/100
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

19

Below median

Major Disaster share

68%

Major-heavy

NRI risk score

79

Relatively Low

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

How often does each hazard strike Northumberland 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 Relatively High an average of 13 times per year
Riverine Flooding Relatively Moderate an average of 1.3 times per year
Strong Wind Relatively High an average of 3.6 times per year
Landslide Relatively Low roughly once every 2 years
Hurricane Relatively Low roughly once every 18 years
Lightning Relatively Moderate an average of 34 times per year
Earthquake Relatively Low roughly once every 1,272 years
Heat Wave Relatively Low 2.8 modeled event-days per year
Ice Storm Relatively Low roughly once every 3 years
Cold Wave Relatively Low an average of 1.4 times per year
Tornado Relatively Low roughly once every 5 years
Avalanche Very Low roughly once every 100 years
Wildfire Very Low roughly once every 19,812 years
Hail Very Low an average of 1.8 times per year

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

Disaster Types

Flood 7
Severe Storm 4
Hurricane 3
Biological 2
Snowstorm 2
Tornado 1

What Flood declarations mean here

Flood is the most frequent declaration type on Northumberland County's record, 37% 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 - 13 68.4%

of all 19 declarations

Emergency - 6 31.6%

of all 19 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2013 1
2011 2
2006 1
2005 1
2004 2
2003 1
1999 1
1996 2
1994 1
1993 1
1985 1
1977 1
1975 1
1972 1

Disaster Declarations

How the 19 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 19 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4506 COVID-19 PANDEMIC DR Biological 2020-03-30
3441 COVID-19 EM Biological 2020-03-13
3356 HURRICANE SANDY EM Hurricane 2012-10-29
4030 TROPICAL STORM LEE DR Flood 2011-09-12
3340 REMNANTS OF TROPICAL STORM LEE EM Flood 2011-09-08
1649 SEVERE STORMS, FLOODING, AND MUDSLIDES DR Severe Storm 2006-06-30
3235 HURRICANE KATRINA EM Hurricane 2005-09-10
1557 TROPICAL DEPRESSION IVAN DR Hurricane 2004-09-19
1555 SEVERE STORMS AND FLOODING ASSOCIATED WITH TROPICAL DEPRESSION FRANCES DR Severe Storm 2004-09-19
3180 SNOW EM Severe Storm 2003-03-14
1298 TROPICAL DEPRESSION DENNIS PA DR Flood 1999-09-22
1093 SEVERE STORMS AND FLOODING DR Flood 1996-01-21
1085 BLIZZARD OF 96 DR Snowstorm 1996-01-13
1015 SEVERE WINTER STORMS DR Severe Storm 1994-03-10
3105 SEVERE SNOWFALL & WINTER STORM EM Snowstorm 1993-03-16
737 SEVERE STORMS, HIGH WINDS & TORNADOES DR Tornado 1985-06-03
523 SEVERE STORMS & FLOODING DR Flood 1976-10-20
485 SEVERE STORMS, HEAVY RAINS & FLOODING DR Flood 1975-09-26
340 TROPICAL STORM AGNES DR Flood 1972-06-23

Storm Events in Pennsylvania

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 9,976 18 114 $115.5M
Flash Flood 2,288 23 8 $463.2M
Winter Weather 1,670 23 268 $566.0K
Hail 1,400 0 0 $2.6M
Winter Storm 881 14 17 $2.9M

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

NFIP Flood Insurance Claims

Total Claims

1,721

Total Paid

$24.2M

Avg Per Claim

$14.1K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 79.2/100

Expected Annual Loss

Relatively Low

$37.3M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Very High

Hazard Risk Breakdown

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

Northumberland County's closest FEMA peer: Pulaski County, KY

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

Further reading for this county

Understanding disaster data

Northumberland County's NFIP claims file (1,721 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 Northumberland County?
The most common disaster type in Northumberland County is Flood, with 7 declarations. Other disaster types include Severe Storm (4), Hurricane (3), Biological (2).
How does Northumberland County's FEMA declaration record compare with the Pennsylvania average?
FEMA lists 19 declaration records for Northumberland County. That is 2% above the Pennsylvania county mean of 18.6. Its count is also 8% below 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 Northumberland County received?
Northumberland County has received 13 major disaster declarations, representing 68% of all 19 disaster declarations.
How many flood insurance claims has Northumberland County filed?
Northumberland County has 1,721 National Flood Insurance Program (NFIP) claims totaling $24.2M in payments, with an average of $14.1K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Northumberland County?
No. In Northumberland County, Winter Weather has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $30.2M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Northumberland County?
The most active year for disaster declarations in Northumberland County was 1996, with 2 declarations. The county has FEMA disaster data spanning 1972 to 2020.
What is the FEMA National Risk Index score for Northumberland County?
According to the FEMA National Risk Index, Northumberland County, Pennsylvania has an overall risk score of 79.2 out of 100 (Relatively Low). The county's social vulnerability rating is Relatively Moderate and community resilience is Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $37.3M in annualized losses.
Which natural hazard poses the greatest risk to Northumberland County?
Based on FEMA NRI data, the highest-risk natural hazard in Northumberland County is Winter Weather (risk rating: Relatively High). Other significant hazards include Riverine Flooding (Relatively Moderate) and Strong Wind (Relatively High). FEMA's modeled event frequency puts winter weather here at an average of 13 times per year, drawn from 243 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.

What this means for Northumberland County

Northumberland County, PA has 19 federal declaration records, 2% more than the Pennsylvania county mean of 19; its history sits in PlainHazard's high activity band.

  • Within this above-state-average declaration file, major disaster leads with 13 of 19 records; the category describes past federal action, not the next likely hazard. Pennsylvania overview
  • The state benchmark and national rank point the same way: this count tops the Pennsylvania mean and the totals for 41% of 3,266 U.S. counties. 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

An above-average declaration count records past federal responses; it does not predict the next event. Current warnings come from the National Weather Service and local emergency officials.

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.