Hazard Plain Automated baseline

Juneau County, WI

Risk-assessment baseline packet

County FIPS:
55057
Release:
2026-10
Data as of:
2026-09-30
Storm Events data through:
2026-06-30

Hazard Plain is an independent product built from public federal data. It is not a FEMA document and is not reviewed or endorsed by FEMA or any state agency.

Hazard Plain release 2026-10, as of 2026-09-30.

Summary

Plan status as of 2026-09-30: Approved, expires 2029-11-17. Plan: Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293), approved 2024-11-18.

Since the plan was approved on 2024-11-18: 1 new hazard declaration (1 incident) and 35 NOAA Storm Events records; details under "What changed since your last plan".

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($11,142,395 a year), Heat Wave ($5,181,630) and Cold Wave ($4,059,310).

The tables that follow are organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B (B1-a to B2-c); each heading says which item its tables support.

Plan clock

Status:
Approved, expires 2029-11-17
Plan:
Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)
Approved:
2024-11-18
Days to expiry:
1,144

What changed since your last plan (approved 2024-11-18)

New federal declarations:
1 new hazard declaration (1 incident): DR-4923-WI (Severe Storms, Tornadoes, and Flooding)
Storm Events records since approval:
35 records (data through 2026-06-30)
Repetitive loss now:
FMA RL 2, SRL 1 (44 CFR 77.2); any definition: 7
Repeat-flood change:
this release sets the baseline count.

Sources: 1, 2, 4, 6 (numbered list at the end)

Plan status for every jurisdiction listed in this county: 15 rows, in the section "Plan clock: Plan status for every jurisdiction listed in this county" on the following pages.

State plan status and tribal plans in this state: see the state page.

Plan clock

Plan status for every jurisdiction listed in this county

Source: 1

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underwayNotes
Juneau CountyCountyApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144
Camp Douglas villageVillageApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-02-05
Elroy cityCityApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Hustler villageVillageApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Lyndon Station villageVillageApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Mauston cityCityApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Necedah villageVillageApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-02-05
New Lisbon cityCityApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Union Center villageVillageApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Wisconsin Dells cityCityApproved, expires 2030-07-08Sauk County Hazard Mitigation Plan 2025 (FEMA plan 110968)2025-07-092030-07-081,377this jurisdiction approved 2026-02-18
Wonewoc villageVillageApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-04-14
Cutler townTownApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-02-05
Mauston School DistrictSchool/School DistrictApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-02-05
Necedah Area School DistrictSchool/School DistrictApproved, expires 2029-11-17Juneau County Hazard Mitigation Plan 2024 (FEMA plan 110293)2024-11-182029-11-171,144this jurisdiction approved 2025-02-05
Tomah Area School DistrictSchool/School DistrictPlan 110821 approved 2026-05-04, pending adoption here; not yet eligibleMonroe County Hazard Mitigation Plan 2025 (FEMA plan 110821), pending adoption here2026-05-04 by FEMA; not yet adopted here2031-05-03 once adoptedFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.

Supports FEMA checklist item B1-a: hazard identification

Hazards NRI does not cover (local data needed)

  • dam failure (incl. upstream dams)
  • levee failure
  • flash flood as its own subtype
  • ice jams
  • debris flows
  • erosion (riverine and coastal)
  • land subsidence and sinkholes
  • expansive soils

The 18 National Risk Index hazards, ranked by expected annual loss (EAL)

Sources: 5, 6

Rank by EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL total (see note)modeled dollars per yearStorm Events records, 1996 to 2026-06-30countStorm Events coverage note
1Inland FloodingRelatively LowRelatively Low$10,946,427$180,483$15,485$11,142,39546
2Heat WaveRelatively ModerateRelatively Moderate$263$1$5,181,365$5,181,63012
3Cold WaveRelatively ModerateRelatively High$55$164$4,059,091$4,059,31017
4TornadoRelatively ModerateRelatively Low$1,004,273$5,108$770,199$1,779,5799
5HailRelatively ModerateRelatively Moderate$1,081,035$93,719$49,705$1,224,459109
6Strong WindRelatively ModerateRelatively Low$122,266$64,598$325,430$512,294132Includes 5 High Wind and 2 Strong Wind records (NOAA non-thunderstorm wind types, outside NRI's Strong Wind definition).
7LightningRelatively LowRelatively Low$22,430n/a$195,714$218,1446
8Winter WeatherRelatively LowRelatively Low$3,979$1,013$34,209$39,20188
9DroughtRelatively LowRelatively Lown/a$31,626n/a$31,62619
10WildfireVery LowVery Low$28,963$25$2,527$31,5167
11EarthquakeVery LowVery Low$19,896n/a$4,540$24,436Storm Events does not record earthquakes.
12Ice StormVery LowVery Low$439n/a$19,169$19,6083
13LandslideRelatively LowRelatively Low$463n/a$13,411$13,8740Declared 2 times; no Storm Events record of this type.
14HurricaneVery LowVery Low$685$463under $1$1,1470No recorded events in Storm Events since 1996 (data through 2026-06-30).

Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).

NRI risk rating combines expected annual loss with social vulnerability and community resilience; EAL rating rates expected annual loss alone. Both compare this county with all U.S. counties.

Local data needed: state and local landslide records (Storm Events records this hazard only in part).

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche, coastal flooding, tsunami and volcanic activity. That is the evidence for leaving them out of the plan.

The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.

Supports FEMA checklist item B1-b: hazard location

Affects the whole county (national data give no location within it): Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather.

Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.

Hazards that vary within the county: highest-rated census tracts

Source: 5

HazardHighest-rated census tractsNRI risk rating, score 0 to 100
Earthquaketract 1005 (Very Low, 26.9); tract 1004 (Very Low, 18.0); tract 1007 (Very Low, 17.7)
Hurricanetract 1007 (Very Low, 26.3); tract 1002 (Very Low, 25.6); tract 1006 (Very Low, 23.1)
Landslidetract 1002 (Relatively Moderate, 97.1); tract 1006 (Relatively Moderate, 96.6); tract 1007 (Relatively Moderate, 96.2)
Tornadotract 1007 (Relatively High, 90.9); tract 1004 (Relatively High, 88.1); tract 1005 (Relatively High, 87.6)
Wildfiretract 1003.02 (Relatively Low, 85.7); tract 1003.01 (Relatively Low, 83.1); tract 1001 (Relatively Low, 83.1)

Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number (for example 1005 is Census Tract 1005). FEMA's Resilience Analysis and Planning Tool maps the National Risk Index for every tract: https://www.fema.gov/emergency-managers/practitioners/resilience-analysis-and-planning-tool

Supports FEMA checklist item B1-c: hazard extent

Extent: scale, observed range and worst recorded event per hazard

Sources: 6, 7

HazardScaleRecordscount and yearsObserved rangeWorst recorded eventMost damaging (when different)How it applies to jurisdictionsNote
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill17 records, 1997 to 2026 (17 zone-level)1 day to 6 days (median 2 days); 16 with a recorded value6 consecutive days, 2010-01-01 to 2010-01-06, zone-levelCountywide (zone-level records).
Frost/Freeze (outside NRI's Cold Wave definition)crop damage0
DroughtU.S. Drought Monitor scale (D0 to D4)19 records, 2012 to 2024 (19 zone-level)64 days to 158 days (median 124 days); 4 with a recorded value158 days (about 5.2 months), 2023-06-27 to 2023-12-01, a run of 7 consecutive Storm Events drought records, zone-levelCountywide (zone-level records).Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only.
EarthquakeModified Mercalli (local data)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)141 records, 1959 to 20260.75 in to 3 in (median 1 in); 141 with a recorded value3 in hail, 2026-04-14; same size also recorded on 2022-09-20Event records naming jurisdictions in the plan: Mauston city (20 records), New Lisbon city (17 records), Necedah village (12 records), Elroy city (10 records), Lyndon Station village (10 records), Wonewoc village (7 records), Union Center village (6 records), Cutler town (5 records), Hustler village (3 records), Camp Douglas village (1 record).
Excessive Heat, Heatheat index (in event narratives)12 records, 1999 to 2026 (12 zone-level)1 day to 9 days (median 3 days); 11 with a recorded value9 consecutive days, 2001-07-31 to 2001-08-08, 1 direct death, zone-levelExcessive Heat, 2011-07-17, $5,000 property; $0 crops (zone total, 2011 dollars)Countywide (zone-level records).
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson0Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records.
Ice StormSperry-Piltz ice scale (local data)3 records, 1998 to 2009 (3 zone-level)No damage reported in 3 records.Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)46 records, 2004 to 2026 (1 zone-level)Flash Flood, 2018-08-28, $28,700,000 property; $35,000 crops (2018 dollars)Event records naming jurisdictions in the plan: Necedah village (25 records), New Lisbon city (6 records), Lyndon Station village (4 records), Mauston city (3 records), Union Center village (3 records), Cutler town (2 records), Elroy city (2 records), Hustler village (2 records), Wonewoc village (1 record). Zone-level records (1) apply countywide.Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most.
Debris Flownone (count and damage only)0
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)6 records, 1996 to 2017Lightning, 1999-06-06, $100,000 property; crops not reported (1999 dollars)Event records naming jurisdictions in the plan: Elroy city (1 record), Hustler village (1 record), Lyndon Station village (1 record), Mauston city (1 record).Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)7 records, 1998 to 2021 (7 zone-level)39 kt (45 mph) to 60 kt (69 mph) (median 50 kt (58 mph)); 7 with a recorded value60 kt (69 mph), measurement type not recorded, High Wind, 1998-11-10; NWS zone WIZ043Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)167 records, 1955 to 202635 kt (40 mph) to 87 kt (100 mph) (median 54 kt (62 mph)); 134 with a recorded value87 kt (100 mph) estimated, Thunderstorm Wind, 2000-06-01; same speed and measurement basis also recorded on 2000-06-01Event records naming jurisdictions in the plan: Mauston city (25 records), Lyndon Station village (15 records), Necedah village (14 records), New Lisbon city (14 records), Elroy city (10 records), Camp Douglas village (6 records), Wonewoc village (4 records), Union Center village (3 records), Cutler town (2 records), Hustler village (2 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)27 records, 1957 to 2026F/EF0 to F/EF4 (median F/EF1); 27 with a recorded valueF4 tornado, 1957-04-19, 21.1 mi path length (whole path, pre-1996), 300 yd wide, $25,000 property; crops not recorded (1957 dollars), 1 direct deathTornado, 2011-05-22, $4,400,000 property; $0 crops (2011 dollars)Event records naming jurisdictions in the plan: New Lisbon city (2 records), Cutler town (1 record), Mauston city (1 record), Necedah village (1 record), Union Center village (1 record).Before 1996 a tornado is listed once, under the county where it began, with its whole path's rating and length; from 1996 on, each county lists its own segment. Length is not used to rank tornadoes (see Methods).
Wildfireacres burned (local data)7 records, 2007 to 2023 (7 zone-level)Wildfire, 2015-05-02, $150,000 property; $0 crops (2015 dollars); NWS zone WIZ043Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)88 records, 1996 to 2026 (88 zone-level)Winter Weather, 2023-10-30, $40,000 property; $0 crops (2023 dollars); NWS zone WIZ043Countywide (zone-level records).

In event narratives only (local data needed): wind chill, temperature, heat index, ice thickness, acres burned and snow depth; any physical measure of debris flow and lightning.

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records from zones that no NWS zone-county file places in this county (mostly before 2020) are not counted here (the Methods page explains the zone matching).

Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.

Supports FEMA checklist item B1-d: previous occurrences

Federal declarations for this county: 16 declarations covering 13 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2026-06-302026-04-13DR-4923-WIMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding (primary); also designated: Tornado$363,722.13new since last plan; within last 5 years
2020-04-042020-01-20DR-4520-WIMajor disasterCOVID-19 PandemicNon-natural, not countedno Public Assistance recorded
2020-03-132020-01-20EM-3454-WIEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4520
2018-10-182018-08-17DR-4402-WIMajor disasterSevere Storms, Tornadoes, Straight-Line Winds, Flooding, and LandslidesInland Flooding (primary); also designated: Landslide, Strong Wind, Tornado$1,758,462.11
2016-10-202016-09-21DR-4288-WIMajor disasterSevere Storms, Flooding, and MudslidesInland Flooding (primary); also designated: Landslide$248,415.17
2010-10-212010-09-22DR-1944-WIMajor disasterSevere Storms and FloodingInland Flooding$164,077.97
2008-06-142008-06-05DR-1768-WIMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding; Tornado$818,721.26
2005-09-132005-08-29EM-3249-WIEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
2004-06-182004-05-07DR-1526-WIMajor disasterSevere Storms and FloodingInland Flooding$400,739.23
2001-05-112001-04-10DR-1369-WIMajor disasterFlooding, Severe Storms and TornadoesInland Flooding (primary); also designated: Tornado, Winter Weather$309,345.86
2000-06-242000-05-26DR-1332-WIMajor disasterSevere Storms, Tornadoes, and FloodingInland Flooding; Tornado$178,876.96
1993-07-021993-06-07DR-994-WIMajor disasterSevere Storms, Tornadoes & FloodingInland Flooding; Tornadono Public Assistance recorded
1992-09-301992-09-14DR-964-WIMajor disasterSevere Storms & FloodingInland Floodingno Public Assistance recorded
1990-07-131990-06-22DR-874-WIMajor disasterSevere Storms, Tornadoes & FloodingInland Flooding; Tornadono Public Assistance recorded
1978-07-071978-07-07DR-559-WIMajor disasterSevere Storms, Flooding, Hail & TornadoesHail; Inland Flooding; Tornadono Public Assistance recorded
1976-06-171976-06-17EM-3014-WIEmergencyDroughtDroughtno Public Assistance recorded

County Public Assistance: applicants the FEMA record places in this county, including any state agencies FEMA files there; statewide rows are listed on the state page; federal share obligated, nominal dollars.

Public Assistance not placed in any Wisconsin county: 1 row, $87,788.41; listed on the Wisconsin state page.

Source: 3

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

HazardStorm Events records, all years on file(years in the Period column)Since plan approvalrecordsIn the 12 months before plan approvalrecordsLast 5 yearsrecordsDeclared incidents, all yearsseparate disastersDeclared since approvalseparate disastersPeriodStatement
Cold Wave17225001996 to 2026-06-30
Drought190612101996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail14110016101955 to 2026-06-30
Heat Wave12113001996 to 2026-06-30
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm3000001996 to 2026-06-30
Inland Flooding4653121211996 to 2026-06-30
Landslide0000201996 to 2026-06-30No Storm Events records of this type; 2 federal declared incidents (see declarations table)
Lightning6000001996 to 2026-06-30
Strong Wind1748118101955 to 2026-06-30Includes 5 High Wind and 2 Strong Wind records.
Tornado27204811950 to 2026-06-30
Wildfire7002001996 to 2026-06-30
Winter Weather887419101996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2026-04-14Hail3 in$660,000 property; $0 crops (2026 dollars)0, 0LYNDON STATIONnew since last plan; within last 5 yearsB1-c worst recorded: Hail
2023-10-30Winter Weather$40,000 property; $0 crops (zone total, 2023 dollars)0, 0NWS zone WIZ043 (JUNEAU), zone-levelwithin last 5 yearsB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2023-06-27Drought$0 property; crops not reported (zone total, 2023 dollars)0, 0NWS zone WIZ043 (JUNEAU), zone-levelwithin last 5 yearsB1-c worst recorded: Drought
2018-08-28Flash Flood$28,700,000 property; $35,000 crops (2018 dollars)0, 0UNION CENTER to LYNDON STATIONB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2012-07-02Heat$0 property; $0 crops (zone total, 2012 dollars)1, 25NWS zone WIZ043 (JUNEAU), zone-leveldeaths or injuries recorded
2010-01-01Cold/Wind Chill$0 property; $0 crops (zone total, 2010 dollars)0, 0NWS zone WIZ043 (JUNEAU), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2001-07-31Heatdamage not reported1, 0NWS zone WIZ043 (JUNEAU), zone-leveldeaths or injuries recorded
2000-06-01Thunderstorm Wind87 kt (100 mph) estimated$175,000 property; crops not reported (2000 dollars)0, 0CAMP DOUGLASB1-c worst recorded: Thunderstorm Wind
1999-06-06Lightning$100,000 property; crops not reported (1999 dollars)0, 0MAUSTONB1-c worst recorded: Lightning
1998-11-10High Wind60 kt (69 mph), measurement type not recorded$180,000 property; crops not reported (zone total, 1998 dollars)0, 0NWS zone WIZ043 (JUNEAU), zone-levelB1-c worst recorded: High Wind and Strong Wind
1985-08-12TornadoF2, 17 mi path length (whole path, pre-1996), 880 yd wide$2,500,000 property; crops not recorded (1985 dollars)2, 22location not recordeddeaths or injuries recorded
1957-04-19TornadoF4, 21.1 mi path length (whole path, pre-1996), 300 yd wide$25,000 property; crops not recorded (1957 dollars)1, 0location not recordedB1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (540 rows).

Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.

1 Fire Management declaration (1980-04-24 to 1980-04-24) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).

Tribal and special-area declarations in this state are listed on the state page.

Supports FEMA checklist item B1-e: probability of future events

Probability: FEMA annualized frequency and descriptor per hazard

Sources: 5, 6

HazardFEMA annualized frequency (modeled)unit per rowUnitIn plain termsDescriptorDescriptor basisNRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)NRI periodLocationNote
Cold Wave6.79event-days per yearabout 6.79 days per yearLikelyStorm Events event-days in 10 of 30 years, 1996 to 2025 (33.3%)1292005-11-12 to 2024-11-12 (19 years)countywide
Drought3.4event-days per yearabout 3.4 days per yearLikelyStorm Events event-days in 4 of 30 years, 1996 to 2025 (13.3%)1402000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.000443annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.0443%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail3.23events per yearabout 3.23 per yearHighly likelyFEMA annualized frequency (modeled)122.6 (modeled)1986 to 2023 (38 years)countywide
Heat Wave3.05event-days per yearabout 3.05 days per yearLikelyStorm Events event-days in 8 of 30 years, 1996 to 2025 (26.7%)452005-11-12 to 2024-11-12 (19 years)countywide
Hurricane0.00575events per yearabout 1 in 174 yearsUnlikelyFEMA annualized frequency (modeled)21851 to 2024 (Atlantic)see B1-fNRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d.
Ice Storm0.0715event-days per yearabout 0.0715 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)51946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding1.14event-days per yearabout 1.14 days per yearLikelyStorm Events event-days in 14 of 30 years, 1996 to 2025 (46.7%)321996 to 2023 (28 years)see B1-f
Landslide0.179events per year (modeled)about 1 in 6 yearsLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning34.3days per year with a strikeabout 34.3 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind3.02events per yearabout 3.02 per yearHighly likelyFEMA annualized frequency (modeled)1151986 to 2023 (38 years)countywide
Tornado0.392events per yearabout 1 in 3 yearsLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.000156annual probability at a locationchance a given location in the county burns in a year: 0.0156%LikelyStorm Events records in 5 of 30 years, 1996 to 2025 (16.7%)not shownmodeledsee B1-f
Winter Weather16.3event-days per yearabout 16.3 days per yearHighly likelyStorm Events event-days in 30 of 30 years, 1996 to 2025 (100%)3092005-11-12 to 2024-11-12 (19 years)countywide

FEMA annualized frequency (modeled) is the National Risk Index v1.20 (December 2025) estimate of how often a hazard affects this county in a year; it is not recorded events divided by years, and its unit differs by hazard (events, event-days, or days with a lightning strike per year). For earthquake, wildfire, coastal flooding and tsunami the value is the chance (or number of events) at a location in the county, not across the county, so no "1 in N years" is given and the descriptor comes from Storm Events where it has a record (none for earthquake). The Methods page gives each hazard's method, from FEMA's National Risk Index Technical Documentation v1.20.

Where NRI gives event-days, the descriptor comes from the share of years with a Storm Events record; NRI's source records more events, so the two differ.

Descriptor scale used in this packet (defined per unit)

Sources: 5, 6

UnitDescriptorDefinition
events per yearHighly likely1 or more per year
events per yearLikelyabout once in 1 to 10 years
events per yearPossibleabout once in 10 to 100 years
events per yearUnlikelyless than once in 100 years
annual probabilityLikely10% to under 100% chance in a given year
annual probabilityPossible1% to under 10% chance in a given year
annual probabilityUnlikelyunder 1% chance in a given year
event-days (share of years)Highly likelyevent-days recorded in 90% or more of years
event-days (share of years)Likelyevent-days recorded in 10% to under 90% of years
event-days (share of years)Possibleevent-days recorded in some years but under 10% of years
lightning strike-daysHighly likelycloud-to-ground strikes on 1 or more days per year

Intensity bands: historical frequency (Storm Events)

Source: 6

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 202554301.8
Hail2.00 in+1996 to 20256300.2
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 202593303.1
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 202510300.333
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 202515300.5
TornadoEF0-11996 to 20256300.2
TornadoEF2-31996 to 20252300.0667
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20250300

The bands show how often events of each severity were recorded in this county, to profile how severe events have been (FEMA's probability item asks for the range of intensities).

Hail smaller than 1 inch is not counted: on 2010-01-05 the National Weather Service raised its severe-hail threshold from 3/4 inch to 1 inch, so smaller reports became less common after 2009 (NWS Service Change Notice 09-52). NRI hail frequency uses a 0.75 inch threshold.

Optional: future conditions. Not a required item in the 2025 FEMA Local Mitigation Planning Policy Guide; some states ask for it. The federal Climate Mapping for Resilience and Adaptation (CMRA) site gives county exposure to future climate conditions (https://resilience.climate.gov/).

Supports FEMA checklist item B1-f: hazards that vary across jurisdictions

Range of census tract risk within the county

Source: 5

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Cold Wave8 of 889.697.098.5Very High 6, Relatively High 2
Drought8 of 874.384.688.5Relatively Low 6, Very Low 2
Earthquake8 of 88.011.826.9Very Low 8
Hail8 of 891.895.497.8Relatively High 8
Heat Wave8 of 895.998.399.2Very High 6, Relatively High 2
Hurricane8 of 818.322.726.3Very Low 8
Ice Storm8 of 88.326.674.5Relatively Moderate 1, Relatively Low 1, Very Low 6
Inland Flooding8 of 879.492.095.4Relatively High 8
Landslide8 of 826.676.397.1Relatively Moderate 3, Very Low 5
Lightning8 of 861.483.390.6Relatively High 6, Relatively Moderate 2
Strong Wind8 of 871.787.691.3Relatively High 6, Relatively Moderate 2
Tornado8 of 867.780.790.9Relatively High 6, Relatively Moderate 2
Wildfire8 of 842.973.785.7Relatively Low 6, Very Low 2
Winter Weather8 of 852.871.077.8Relatively Moderate 8

Drought: Agriculture is all of NRI's expected annual loss for this hazard in the county, so the tract range mostly reflects where crop and livestock value is.

Rated tracts only: No Rating (score 0.0), Not Applicable and Insufficient Data tracts are counted but not used for the minimum, median and maximum.

The score ranks a tract against all U.S. tracts (100 = highest). The rating is FEMA's category for the tract's risk value, computed differently, so the two can disagree.

Frequency data for cold wave, drought, hail, heat wave, ice storm, lightning, strong wind and winter weather are county-wide or coarse (49 km grid or NWS zone), the same for every jurisdiction; the tract range mostly reflects where buildings and people are (crop and livestock value where a line above names agriculture).

Each jurisdiction (starting figures from federal data)

Sources: 1, 3, 4, 6

JurisdictionTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollarsEvent records naming this placeall years; since its planNotes
Juneau CountyCountyApproved, expires 2029-11-17FMA RL 1, SRL 1; any 2$55,958.950 total; 0 since its plan
Camp Douglas villageVillageApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$1,801.057 total; 0 since its plan
Elroy cityCityApproved, expires 2029-11-17FMA RL 0, SRL 0; any 1$176,059.9123 total; 3 since its plan
Hustler villageVillageApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$4,439.478 total; 1 since its plan
Lyndon Station villageVillageApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$86,143.7130 total; 3 since its plan
Mauston cityCityApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$46,797.9950 total; 2 since its plan
Necedah villageVillageApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$284,399.3752 total; 2 since its plan
New Lisbon cityCityApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$32,446.5339 total; 4 since its plan
Union Center villageVillageApproved, expires 2029-11-17FMA RL 0, SRL 0; any 0$173,072.2413 total; 1 since its plan
Wisconsin Dells cityCityApproved, expires 2030-07-08FMA RL 0, SRL 0; any 0no Public Assistance recorded0 total; 0 since its plan
Wonewoc villageVillageApproved, expires 2029-11-17FMA RL 1, SRL 0; any 4$320,552.6412 total; 0 since its plan
Cutler townTownApproved, expires 2029-11-17$123,883.3210 total; 1 since its planNo NFIP community ID on this jurisdiction's plan row.

Repetitive-loss counts are for whole NFIP communities, which can extend beyond this county (see the note in B2-c).

School districts and special districts get a plan clock row only.

County Public Assistance in B1-d also includes applicants filed under the county that are not jurisdictions in this plan (for example state agencies, special districts and nonprofits), so the jurisdiction rows add up to less.

Supports FEMA checklist items B2-a and B2-b: vulnerability and potential impacts

Local data needed

The table below gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.

  • Critical facilities and lifelines per hazard
  • A problem statement per jurisdiction per hazard
  • Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
  • Future assets

County-level starter: exposure, expected annual loss and damage since the plan

Sources: 1, 2, 3, 5, 6, 7

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2024-11-18county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Cold Wave$8,825,397,722$150,311,07326,694$55$164$4,059,091under 0.0001%$0
Droughtn/a$48,501,609n/an/a$31,626n/a0.0652% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$15,361,030,631n/a26,718$19,896n/a$4,5400.00013%
Hail$8,825,397,910$150,311,07326,694$1,081,035$93,719$49,7050.0122%$818,000
Heat Wave$8,825,397,722$150,311,07326,694$263$1$5,181,365under 0.0001%$0
Hurricane$8,818,361,601$149,772,08926,669$685$463under $1under 0.0001%
Ice Storm$8,825,397,910n/a26,694$439n/a$19,169under 0.0001%
Inland Flooding$8,802,886,146$9,196,540817$10,946,427$180,483$15,485n/a (see note)$0$363,722.13NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b.
Landslide$163,731,914n/a692$463n/a$13,4110.000283%
Lightning$8,825,397,910n/a26,694$22,430n/a$195,7140.000254%
Strong Wind$8,825,397,910$150,311,07326,694$122,266$64,598$325,4300.00139%$120,000
Tornado$8,825,397,910$150,311,07326,694$1,004,273$5,108$770,1990.0114%$2,050,000$363,722.13
Wildfire$1,424,790,328$24,888,3236,686$28,963$25$2,5270.00203%
Winter Weather$8,825,397,722$150,311,07326,694$3,979$1,013$34,209under 0.0001%$0

Totals since 2024-11-18 (Storm Events through 2026-06-30): 25 county-coded records, 25 with a damage value recorded (including $0), $2,988,000; 10 zone-level records, 10 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: $363,722.13 on 1 counted declaration.

FEMA does not split Public Assistance by hazard. A declaration mapped to several hazards is listed under each of them with its full amount, so the per-hazard column does not add up to the total; the unit total counts each declaration once.

NRI computes earthquake exposure on its own basis, so it exceeds the county building value in B2-a.

Supports FEMA checklist item B2-a: vulnerability (county context)

County context

Source: 5

MeasureValue
Population26,694
Building value (total, not at risk)$8,825,397,910
Agriculture value (total, not at risk)$150,311,073
NRI risk rating (all hazards)Relatively Low
Expected annual loss, buildings and agriculture, all hazards$13,608,374
Expected annual loss, population equivalence, all hazards (NRI values each statistical life at $13.7M; a modeled value of expected deaths and injuries, not property damage)$10,670,846
Social vulnerability ratingRelatively High
Community resilience ratingRelatively Moderate
NRI versionDecember 2025

FEMA's all-hazard expected annual loss adds buildings, agriculture and population equivalence; this table gives the property part and the population-equivalence part as separate rows.

Social vulnerability: higher means people are more likely to be harmed and slower to recover. Community resilience: lower means the community is less able to recover. High social vulnerability and low resilience both raise the NRI risk rating.

Supports FEMA checklist item B2-c: repetitive loss properties

Repetitive loss in this county, both definitions

Sources: 1, 4

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)2Severe repetitive loss, FMA definition (44 CFR 77.2)1
Repetitive loss, NFIP insurance definition6Severe repetitive loss, NFIP insurance definition0

The state NFIP coordinator's list, the source FEMA's Handbook names, often uses the NFIP insurance definition (second row).

Repeat-flood properties: county and state-level rows

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total2160712
of which: Elroy city0010100
of which: Wonewoc village1030410
of which: Juneau County (unincorporated area)1120202
Statewide, no county in FEMA's file0020200

The statewide row counts properties FEMA's file gives with no county in this state; they are listed for reference and are not in this county's counts.

Repeat-flood properties by jurisdiction in the plan (NFIP community)

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Juneau County5505801120202
Camp Douglas village5505510000000
Elroy city5502010010100
Hustler village5502020000000
Lyndon Station village5502030000000
Mauston city5502040000000
Necedah village5502050000000
New Lisbon city5502060000000
Union Center village5502070000000
Wisconsin Dells city5500650000000
Wonewoc village5502081030410

Counts by occupancy group for each jurisdiction are in the Excel file, sheet "B2-c Jurisdictions".

Jurisdiction rows are whole NFIP communities and need not add up to the county total: a community that extends into another county is counted in full on each jurisdiction row, while the county table counts only its part in this county.

County repeat-flood properties by occupancy group

Sources: 1, 4

Occupancy groupRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
single-family residential0040400
2 to 4 unit residential1000110
other residential0000000
non-residential1120202
not reported0000000

FEMA's occupancy groups have no institutional class; institutional properties are counted in non-residential or other residential in the table by occupancy group.

FMA RL and FMA SRL are the Flood Mitigation Assistance definitions (44 CFR 77.2), the ones the FEMA Local Mitigation Planning Policy Guide cites. NFIP repetitive loss (the FEMA insurance definition) is 2 or more claims over $1,000 in 10 years, and a property can leave that group once it is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured. The Methods page gives the OpenFEMA field details.

Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (FEMA's data date 2026-08-02; file version 2026-08-04). No property is identified. County assignment is FEMA's geocode.

In this county 1 property is FMA repetitive loss but not NFIP repetitive loss, and 5 properties are NFIP repetitive loss but not FMA repetitive loss.

Exact counts; no count suppression.

Sources

Tables cite these sources by number. The full list, for the plan's bibliography (FEMA review item A4-a):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
  5. FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-30, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)
  6. NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-30, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/
  7. NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-30, https://www.weather.gov/gis/ZoneCounty
  8. U.S. Census Bureau, Census 2024 Gazetteer, 2020 place by county, CT county-to-cousub crosswalk, version 2024-gazetteer, pulled 2026-09-30, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_counties_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_cousubs_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_place_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_unsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_elsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_scsd_national.zip, https://www2.census.gov/geo/docs/reference/codes2020/national_place_by_county2020.txt, https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.xlsx (used to match place names and codes; no table prints its values)

What this packet is and what the plan adds

This packet is the federal data for the plan's risk assessment (the summary on page 1 says how it is organized); the plan and FEMA's review decide whether each item is met.

The plan adds what only the community has: local data on assets, critical facilities, development and each jurisdiction's impacts; local hazard history, including state-declared emergencies; the mitigation strategy; and adoption.

How the federal data are built: National Risk Index values are FEMA's model, not counts of events. Storm Events is more complete from 1996; zone-level records are placed by forecast zone, not by location in the county. Public Assistance for a jurisdiction is matched by applicant name. The Methods page gives every rule and the known edge cases.

OpenFEMA disclaimer

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Reuse, citation and corrections

Reuse and citation: Hazard Plain text and tables are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/); credit Hazard Plain and the release. The underlying federal data are public domain; OpenFEMA data are also subject to the OpenFEMA terms and conditions.

Cite this: Hazard Plain (2026). Juneau County, WI: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 55057). Automated baseline. https://hazardplain.org/wi/55057/ Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.

Corrections: to report an error, name the packet, the table and what your records show. Contact: contact@hazardplain.org