Disaster Data / States / Wisconsin / Jefferson County

County

Jefferson County, Wisconsin

Jefferson County recorded 5 federal major disaster declarations since FY2000 (through FY2026), the federal government's fullest response to an event. Alongside those sit 3 emergency declarations and 0 fire management declarations, 8 in all. Its most common hazard is severe storm.

Highlighted: Jefferson County, WI

Totals: FY2000 to FY2026 · Page last rebuilt Oct 26, 2026 · the current in-progress fiscal year is not included in totals

5
Major disasters
3
Emergency declarations
0
Fire management grants
8
All declarations on record
Jun 2026
Most recent
$2.5M
Federal PA obligated (top: emergency protective measures)

The federal disaster record for Jefferson County runs between 2004 and 2026, covering 8 declarations in all. Its most recent major disaster declaration was Severe Storms, Tornadoes, And Flooding in 2026. The hazards behind these declarations were most often severe storm, biological, and flood. Since 2000, FEMA has obligated about $2.5 million in Public Assistance funding to the jurisdiction, most of it for emergency protective measures.

Past 12 months

Recent declarations and aid so far

Jefferson County has been named in 1 federal declaration in the past 12 months. The figures are what FEMA has reported for Jefferson County to date and grow as recovery continues. It falls in a complete fiscal year and is counted in the totals above.

25
Households approved for assistance
$96K
Individual Assistance approved
$181K
Public Assistance obligated
DeclarationDeclaredHouseholds approvedIndividual AssistancePublic Assistance obligated
DR-4923-WIMajor disaster · FloodJun 30, 2026Incident period Apr 13 to 23, 202625of 48 registered$96K$181K

DR-4923-WI has approved 25 households for assistance so far, the 4th most of any Jefferson County disaster in FEMA's household assistance data, which begins in 2002. The most was DR-1768-WI in 2008, with 708. COVID-19 funeral assistance is left out of this comparison. Jefferson County's 25 households are less than 1% of the 24,282 approved across Wisconsin under DR-4923-WI.

Individual Assistance is FEMA's Individuals and Households Program, from OpenFEMA's Housing Assistance data for owners and renters. Public Assistance is the obligated federal share from OpenFEMA's grant award activity, which usually starts posting weeks to months after a declaration. Select a declaration number to open its full event profile, with the same figures for every place it covers.

Risk and vulnerability context

Historical declarations show what has happened here. These national datasets add context about underlying natural-hazard risk and community vulnerability.

County FIPS 55055
CDC / ATSDR

Social Vulnerability Index

2022 county-level SVI
12.8
overall percentile nationally

Approximately 12.8% of U.S. counties have an equal or lower overall SVI ranking.

Socioeconomic status11.1
Household characteristics6.8
Racial and ethnic minority status33.5
Housing type and transportation42.8

Higher percentiles indicate greater relative social vulnerability within the CDC SVI framework. CDC SVI documentation

FEMA

National Risk Index

December 2025
75.8
overall risk score
Relatively Low
Expected annual loss$41.8MRelatively Low
NRI social vulnerability19.8Very Low
Community resilience92.1Very High

The NRI combines expected annual loss, social vulnerability, and community resilience to describe relative natural-hazard risk. FEMA NRI documentation

About these measures: CDC Social Vulnerability Index and FEMA National Risk Index Social Vulnerability are separate measures built with different methods. They are shown side by side for context and should not be interpreted as equivalent scores.

Federal Public Assistance obligated

$2M has been obligated to Jefferson County in Public Assistance since FY2000.

$2M followed major disasters other than COVID-19. $232K followed emergency declarations, which cover debris removal and emergency protective work only. $17K appears in FEMA's county totals but is not tied to a single declaration in the obligation timing file, so it is left unattributed here rather than assigned to a type.

Obligated is the committed share, not necessarily spent, and can be revised as projects close out.

Federal Public Assistance by category

Federal share obligated to this jurisdiction under FEMA Public Assistance since 2000, grouped by damage category. Figures are rounded to the nearest dollar and reflect obligations, which may change as projects close out.

CategoryProjectsFederal share obligated
Emergency protective measures(B)71$976,161
Roads and bridges(C)44$689,245
Parks and recreation(G)20$460,034
Debris removal(A)29$265,093
Utilities(F)4$51,524
Buildings and equipment(E)7$32,076
Water control facilities(D)3$10,408
Management costs(Z)4$2,618
All categories182$2,487,159

Recovery funding, how fast it came

For each disaster, the wait from the declaration to the first federal obligation (amber), then the federal share obligating after that (teal), on a shared 4-year scale. Typical wait to the first obligation here: about 36 days. An obligation is the federal share committed to the recipient state, not funds disbursed to the locality, which comes later and is not shown.

Severe Storms, Tornadoes, And Flooding 2026$181K
36 days to first federal obligation
DR-1966 2011$17K
66 days to first federal obligation
Severe Storms, Tornadoes, And Flooding 2008$1.8M
95 days to first federal obligation
Record Snow And Near Record Snow 2008$232K
20 days to first federal obligation
Severe Storms And Flooding 2004$225K
34 days to first federal obligation
Declared1 yr2 yr3 yr4 yr

Assistance to households (Individual Assistance)

FEMA Individual Assistance to households in this jurisdiction, combined across the Housing Assistance owner and renter programs. Valid registrations are households that applied within a designated Individual Assistance area; approved counts and dollars are the households FEMA found eligible under the Individuals and Households Program. Figures are self-reported and drawn from NEMIS through OpenFEMA, not audited, and Individual Assistance exists only for disasters where it was designated, so many jurisdictions show none.

1,447
valid registrations
916
households approved
$4,274,170
total IHP approved
Assistance typeApproved amount
Repair and replacement$2,758,497
Rental assistance$544,759
Other needs$952,873

Hazard mitigation, what has been funded here

Federal Hazard Mitigation Assistance obligated to this jurisdiction to reduce future disaster losses, across the FEMA mitigation programs. This is the record of past mitigation investment a local hazard mitigation plan documents. Figures are federal share obligated, reported through OpenFEMA and not audited, and are separate from the Public Assistance funding above.

$11,959,849
federal mitigation share
16
funded projects
121
properties mitigated
ProgramProjectsFederal share obligated
Hazard Mitigation Grant Program(HMGP)10$9,884,313
Building Resilient Infrastructure and Communities(BRIC)1$1,530,596
Flood Mitigation Assistance(FMA)2$341,484
Pre-Disaster Mitigation(PDM)3$203,456

State declarations (governor)

Emergency declarations issued by the governor of this state, which are separate from and usually precede a federal declaration. A declaration is listed here when NOAA Storm Events recorded reports of the matched hazard in this jurisdiction while the order was in effect. That is evidence of local impact during a declared state emergency. It is not a statement that the governor named this jurisdiction in the order, since most state declarations apply statewide and name no localities at all. Hazard categories come from the order text. Damage figures are NOAA storm report estimates for this jurisdiction only, not the cost of the declaration.

5
state declarations with local storm evidence
18
statewide on record

Archive coverage for Wisconsin: 2019-present structured Governor archive; 2000-2018 not covered; early PDFs may require OCR

Source: state executive order archives collected by DisasterData Plus, joined to NOAA Storm Events. See the Plus overview for per-state coverage and method.

Most common hazards

Every declaration on record

Major disaster (DR). The big one. Opens the full toolbox: repair money for public infrastructure, help for households, and mitigation funding to reduce the next loss.

Emergency (EM). Narrower and usually faster, for protective work before or during an incident. Capped, and rarely brings household assistance. Nearly every county has one from COVID-19.

Fire management (FM). Cost sharing to fight a wildfire as it burns. Not a disaster declaration, and it does not open recovery programs.

Showing 8 declarations

DateNumberTypeHazardTitle
Jun 30, 2026DR-4923-WIDRFloodSevere Storms, Tornadoes, And Flooding
Apr 4, 2020DR-4520-WIDRBiologicalCovid-19 Pandemic
Mar 13, 2020EM-3454-WIEMBiologicalCovid-19
Jun 14, 2008DR-1768-WIDRSevere StormSevere Storms, Tornadoes, And Flooding
Mar 19, 2008EM-3285-WIEMSnowstormRecord Snow And Near Record Snow
Aug 26, 2007DR-1719-WIDRSevere StormSevere Storms And Flooding
Sep 13, 2005EM-3249-WIEMHurricaneHurricane Katrina Evacuation
Jun 18, 2004DR-1526-WIDRSevere StormSevere Storms And Flooding
← Wisconsin statewide overview · All Wisconsin jurisdictions

How these numbers are built

Drawn from FEMA's OpenFEMA Disaster Declarations Summaries, rebuilt each week. A declaration is counted here once for each designated area it names, so a single disaster covering many localities is counted in each one. For that reason these jurisdiction counts do not sum to Wisconsin's statewide total. This page counts declarations that named this jurisdiction as a designated area. Totals cover complete fiscal years (Oct 1 to Sep 30). Declarations from the fiscal year still in progress are listed in the tables on this page but are not counted in the totals until the year is complete. Uses OpenFEMA data but is not endorsed by or affiliated with FEMA.

Cite this profile

Choose a citation style, then copy the formatted citation. This profile is derived from FEMA OpenFEMA data and is updated as the underlying Disaster Data build is refreshed.

Other Wisconsin jurisdictions