Storm risk in Brown County, Wisconsin

FEMA's overall hazard score for Brown County is 90.04 (Relatively Moderate), 314th of 3,144 counties. Hail scores 95.67 (Relatively High), strong wind 30.98 (Relatively Low) and tornado 93.42 (Relatively High). Expected hail loss is $42 per $1 million of buildings a year; NOAA logged 49 hail reports in Brown County from 2014 to June 2026.

FEMA National Risk Index, version December 2025, retrieved October 8, 2026. NOAA hail reports 2014 to June 2026.

Brown County: expected yearly loss per $1 million of buildings for hail, strong wind and tornado, on a log scale, against all U.S. counties and the counties of WI$0.1$1$10$100$1,000Hail: $42 per $1 million, 1,091st of 3,126 rated counties$42Hail1,091st of 3,126 countiesStrong wind: $0.96 per $1 million, 3,019th of 3,121 rated counties$0.96Strong wind3,019th of 3,121 countiesTornado: $139 per $1 million, 1,886th of 3,144 rated counties$139Tornado1,886th of 3,144 counties
  • Brown County, coloured by its FEMA rating
  • all U.S. counties
  • each county in the state
  • U.S. median
  • state median

Expected yearly loss per $1 million of buildings, log scale. Dot colour is FEMA’s rating band. The tornado lane counts everything exposed, not only buildings.

How FEMA rates Brown County

HazardRatingScore (0 to 100)Rank in U.S.Rank in WI
OverallRelatively Moderate 90.04314 of 3,1443 of 72
HailRelatively High 95.67137 of 3,1265 of 72
Strong windRelatively Low 30.982,171 of 3,12660 of 72
TornadoRelatively High 93.42208 of 3,1265 of 72

Expected yearly loss, in dollars

HazardThis county, total a yearPer $1M of buildingsState median countyU.S. median countyRank per $1M, U.S.Rank per $1M, state
Hail$3,596,201$42 $70$22 1,091 of 3,12652 of 72
Strong wind$82,077$0.96 $15$20 3,019 of 3,12172 of 72
Tornado$11,878,400$139 $194$199 1,886 of 3,14452 of 72

Rank 1 is the highest. Overall, hail and wind losses count buildings; the tornado row counts everything FEMA exposes, so it overstates building damage. Expected annual loss is an average over many years for the whole county, not a forecast for one roof.

What stands out in Brown County

  • FEMA expects hail in Brown County to cost $42 per $1 million of buildings a year: 1.88 times the U.S. median and 0.60 times the WI county median, ranked 1,091st of 3,126 counties nationally and 52nd of 72 in Wisconsin.
  • FEMA expects strong wind in Brown County to cost $0.96 per $1 million of buildings a year: 0.05 times the U.S. median and 0.06 times the WI county median, ranked 3,019th of 3,121 counties nationally and 72nd of 72 in Wisconsin.
  • FEMA expects tornado in Brown County to cost $139 per $1 million of buildings a year: 0.70 times the U.S. median and 0.71 times the WI county median, ranked 1,886th of 3,144 counties nationally and 52nd of 72 in Wisconsin.
  • Applying FEMA's estimate to a $245,900 home, the average yearly loss in Brown County is about $10 for hail and $0.24 for wind before any deductible; at the U.S. median county rates it would be $5.49 and $5.01.
  • If the next years look like 2014 to 2025, a roof kept 20 years in Brown County meets about 15.0 hail days of 1 inch or more; the median county in NOAA's file (1,275 counties) would give 35.0.
  • Built in 1980, the median home in Brown County is 46 years old, so an original roof has outlived a 3-tab shingle (15 to 20 years) and an architectural one (25 to 30 years); 76.8% of its 114,123 homes are at least 26 years old.
  • March to June holds 30 of the 49 hail reports in Brown County (61 percent); the quietest month is January, with 0 reports.

What hail and wind cost a home here in an average year

Enter a home value. The calculator applies Brown County’s own loss rate: the county’s expected yearly loss divided by the value of its buildings. It starts at the Census median home value for the county.

$10hail, a year; $5.49 at the U.S. median county rate
$0.24strong wind, a year; $5.01 at the U.S. median county rate
$211hail and wind together over 20 years, at today’s rate

Formula: home value × Brown County yearly loss ÷ building value. Hail: $3,596,201 ÷ $85,693,036,006 = 0.0000420. Wind: $82,077 ÷ $85,693,036,006 = 0.0000010. This is FEMA’s estimate of average damage to buildings and does not account for your deductible. Tornado is left out because FEMA’s tornado loss counts people and other exposure, not only buildings.

Read this as a yardstick. The rate is an average over every building in the county, from sheds to office towers, and over many years. Real losses come in rare, large storms; a roof with no damage in 19 years can need full replacement in the 20th. The figure is not a quote and not a prediction for one address.

Brown County in plain numbers

  • Brown County scores 90.04 in FEMA's overall hazard index (Relatively Moderate): 314th of 3,144 rated counties and 3rd of 72 in Wisconsin.
  • Hail scores 95.67 (Relatively High). FEMA expects $3,596,201 of hail damage to buildings in Brown County a year, which is $42 per $1 million of buildings, 1.88 times the U.S. median.
  • Strong wind scores 30.98 (Relatively Low) with $82,077 of expected yearly building loss in Brown County: $0.96 per $1 million of buildings, 0.05 times the U.S. median.
  • Tornado scores 93.42 (Relatively High) and FEMA's expected yearly tornado loss is $11,878,400, counting everything exposed, or $139 per $1 million of buildings in Brown County.
  • FEMA's own event record for Brown County averages 1.84 hail events and 1.97 strong-wind events a year.
  • NOAA logged 49 hail reports in Brown County between 2014 and June 2026, on 12 days with stones of 1 inch or more; the largest was 2.5 inches.
  • In Brown County, FEMA counts buildings worth 85.69 billion dollars and 268,585 residents.
  • Social vulnerability is Very Low in Brown County.
  • Community resilience there is Very High, for 268,585 residents.
  • 1 city in Brown County is covered on this site: Green Bay. 14 Census ZIP areas have more than half of their land in the county.
  • Our guide range for a 2,000 sq ft asphalt roof in Green Bay is $6,580 to $14,570.
  • Brown County ranks 77 of the 194 counties with a page here for hail loss per $1 million of buildings, 190 for wind and 133 for tornado.
  • In Brown County, June is the busiest month with 11 of the 49 reports (22 percent), against 0 reports in December.
  • Brown County's worst year was 2026, with 3 hail days at 1 inch or more and 18 reports. At the 2014 to 2025 pace that is 0.75 such days a year, one about every 16.0 months.
  • The median home in Brown County was built in 1980; 49.6% of its 114,123 housing units date from before 1980, 76.8% from before 2000 and 10.1% from 2010 on.
  • Census puts the median home value in Brown County at $245,900, and 64.6% of homes are lived in by their owners.
  • 6,622 single-family building permits were issued in Brown County from 2014 to 2025, about 58.0 per 1,000 homes, peaking in 2017.
  • NOAA lists 4 tornado tracks in Brown County since 2014; the strongest was an EF0 on August 7, 2019 near Green Bay, 6.2 miles long.
  • The fastest gust in NOAA's records for Brown County is 75 mph on June 15, 2022 at Mills Center.
  • The nearest county with a page here is Outagamie County, 23 miles from the centre of Brown County; its hail score is 93.00.
  • Across counties the median is one roofing firm for every 5,189 homes; Census counted 16 roofing contractor establishments in Brown County in 2023, one for every 7,133 homes.

The hail record of Brown County, year by year

NOAA logged 49 reports in Brown County; hail of 1 inch or more fell on 12 days. That is 0.8 such days a year; the median county in NOAA’s file has 1.8.

Brown County: NOAA hail reports per year, 2014 to June 2026, with the number of days that had hail of 1 inch or more051015202014: 0 reports, 0 days at 1 inch or more, largest 0 inch142015: 3 reports, 2 days at 1 inch or more, largest 1.75 inch152016: 0 reports, 0 days at 1 inch or more, largest 0 inch162017: 5 reports, 1 days at 1 inch or more, largest 1.25 inch172018: 1 reports, 0 days at 1 inch or more, largest 0.75 inch182019: 3 reports, 1 days at 1 inch or more, largest 1 inch192020: 0 reports, 0 days at 1 inch or more, largest 0 inch202021: 6 reports, 1 days at 1 inch or more, largest 2.5 inch212022: 5 reports, 1 days at 1 inch or more, largest 1 inch222023: 3 reports, 1 days at 1 inch or more, largest 1 inch232024: 3 reports, 1 days at 1 inch or more, largest 1 inch242025: 2 reports, 1 days at 1 inch or more, largest 1 inch252026: 18 reports, 3 days at 1 inch or more, largest 1.75 inch26*
  • reports
  • days with hail of 1 inch or more
  • * 2026 runs to June only
Brown County: NOAA hail reports by calendar month, 2014 to June 2026January: 0 reports0JanFebruary: 0 reports0FebMarch: 6 reports6MarApril: 10 reports10AprMay: 3 reports3MayJune: 11 reports11JunJuly: 1 reports1JulAugust: 11 reports11AugSeptember: 7 reports7SepOctober: 0 reports0OctNovember: 0 reports0NovDecember: 0 reports0Dec

Reports by calendar month, all years together. Peak: June, 11 reports.

The same numbers as a table (years with at least one report)
YearReportsDays, 1 inch or moreDays, 1.75 inch or moreLargest stoneDamage reported
20153221.75 in–
20175101.25 in–
20181000.75 in–
20193101 in–
20216112.5 in–
20225101 in–
20233101 in–
20243101 in–
20252101 in–
2026 (to June)18321.75 in–

Biggest hail days in Brown County

DateLargest stoneReports that dayDamage reportedNear
September 7, 20212.5 in6none recordedWrightstown
June 24, 20261.75 in7none recordedPulaski
March 30, 20261.75 in5none recordedAshwaubenon
August 2, 20151.75 in2none recordedSuamico
August 14, 20151.75 in1none recordedPulaski

Where large hail was reported

FEMA scores the county as a whole. NOAA’s reports show where inside Brown County the big stones fell.

Reported hail locations, Brown County

1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1.25 in hail1.25 in hail1.25 in hail1.25 in hail1.25 in hail1.25 in hail1.5 in hail1.5 in hail1.5 in hail1.5 in hail1.75 in hail1.75 in hail1.75 in hail1.75 in hail1.75 in hail2 in hail2.5 in hail Green Bay
  • 251 to 1.74 in
  • 71.75 to 2.74 in, golf ball to tennis ball
  • 02.75 in and up, baseball

Largest plotted stone: 2.5 in. Bigger dots are bigger stones.

32 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.

Sources: NOAA, Census county outline

Wind and tornado records for Brown County

Fastest gusts in Brown County

DateGustNear
June 15, 202275 mphMills Center
June 15, 202275 mphCormier
June 14, 201770 mphDe Pere
June 15, 202270 mphAshwaubenon

Strongest tornado tracks in Brown County

DateScaleLengthInjured / killedNear
August 11, 2021EF02.27 mi0 / 0Pulaski
August 7, 2019EF06.2 mi0 / 0Green Bay
June 14, 2017EF01.21 mi0 / 0Morrison
June 15, 2015EF00.35 mi0 / 0Glenmore

4 tornado tracks in all since 2014; the strongest 4 are listed.

How old the roofs are

Census counts homes by the decade they were built. Under each bar is the number of hail days of 1 inch or more that an original roof from that decade has met, at Brown County’s 2014 to 2025 pace of 0.75 such days a year. Most roofs have been replaced since; the row shows what a roof that never was would have taken.

Brown County: share of homes by decade built, with the hail days at 1 inch or more that an original roof from each decade has met at the county's 2014 to 2025 ratepre-1940: 9.8% of homes9.8%<1940681940s: 3.9% of homes3.9%1940s611950s: 9.7% of homes9.7%1950s531960s: 10.2% of homes10.2%1960s461970s: 16.0% of homes16%1970s381980s: 11.9% of homes11.9%1980s311990s: 15.2% of homes15.2%1990s232000s: 13.2% of homes13.2%2000s162010s: 9.0% of homes9%2010s82020+: 1.0% of homes1%2020+2

Bars: share of 114,123 housing units by decade built. Figures under the decade: hail days met by an original roof, at the county’s 2014 to 2025 pace. The pace of earlier years is unknown.

Median year built1980
Built before 198049.6%
Built before 200076.8%
Built since 201010.1%
Owner-occupied64.6%
Median home value$245,900
Single-family permits, 2014 to 20256,622
Permits per 1,000 homes58.0

Asphalt shingles are rated 15 to 20 years (3-tab) and 25 to 30 years (architectural). Source: Census ACS 2019 to 2023 and Building Permits Survey.

Roofers and past disasters in Brown County

Roofing firms in Brown County

Roofing contractor establishments, 202316
Change since 2016-6 (-27%)
Homes per roofing firm7,133
Median across counties5,189
Employees, 2023229

Source for Brown County: Census County Business Patterns, NAICS 238160.

Nearby counties

The closest counties that have a risk page, by distance between county centres. Loss is per $1 million of buildings; the columns marked "times here" divide the neighbour's loss by Brown County's.

CountyMilesOverallHail lossHail, times hereWind lossWind, times hereNOAA hail reports
Outagamie County, WI23 Relatively Low $531.27$1516.1468
Winnebago County, WI42 Relatively Moderate $561.34$1617.1324
Racine County, WI120 Relatively Moderate $310.74$6.656.9546
Kenosha County, WI130 Relatively Moderate $330.79$1112.0026
Rock County, WI135 Relatively Moderate $872.08$2121.4974
La Crosse County, WI161 Relatively Low $1242.95$6.296.5777

More Wisconsin counties, nearest first

All 194 counties, with a filter by state and sorting

Cities and ZIP areas in Brown County

1 city in this county is on PickARoofer. ZIP Code Tabulation Areas are Census shapes that approximate ZIP codes; where we have a city’s ZIPs, the share is the part of each area’s land that lies in this county. 14 such areas have more than half their land here.

CityZIP areas (share of land in the county)Pages
Green Bay 54301 (100%), 54302 (100%), 54303 (100%), 54304 (100%), 54307 (100%) Roofers

Storm hit your roof in Brown County? A free inspection tells you if there is damage. One local roofer answers, not five.

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Questions

How high is storm risk in Brown County?

FEMA's National Risk Index gives Brown County an overall score of 90.04 (Relatively Moderate), 314th of 3,144. Hail scores 95.67 (Relatively High), strong wind 30.98 (Relatively Low) and tornado 93.42 (Relatively High).

In Brown County, how many hail reports has NOAA logged?

A report is one entry for one storm in one county, so counts follow where people live as well as where hail fell. NOAA has 49 for Brown County between 2014 and June 2026, on 12 days with hail of 1 inch or more; the largest stone was 2.5 inches.

What do hail and wind cost a home in Brown County each year, on average?

Applying FEMA's county rates to its median home value of $245,900: FEMA's estimate is about $10 a year for hail and $0.24 for wind, before any deductible, against $5.49 and $5.01 at the U.S. median county rates. This is an average over many years and all buildings, not a prediction for one roof; one bad storm costs far more than the average year.

How does Brown County compare with the rest of Wisconsin?

Per $1 million of buildings Brown County loses $42 to hail a year, against $70 in the median county of the state. Among 72 rated counties it is 5th for hail, 60th for strong wind and 5th for tornado.

How old are the roofs in Brown County?

The median home was built in 1980, 46 years ago, and 76.8% of the 114,123 housing units in Brown County date from before 2000. Asphalt shingles are rated 15 to 20 years (3-tab) or 25 to 30 years (architectural), so an original roof of either kind is past its rated life. The Census does not record when a roof was replaced.

What does expected annual loss mean?

It is FEMA's estimate of the average yearly loss from a hazard, in dollars, summed over the county. It is built for comparing counties at planning level, not for pricing one house.

Does a high rating mean my roof will be damaged?

No. The index compares counties and cannot say what will happen on your street. After a storm, a roof inspection is the only way to know.

Sources for Brown County: FEMA National Risk Index, version December 2025, retrieved October 8, 2026; NOAA Storm Events Database hail reports for Brown County; Census Bureau ZCTA-to-county relationship file (2020); Census ACS and Building Permits Survey, homes in Brown County; Census County Business Patterns, roofing firms in Brown County. Planning-level information about Brown County, not an inspection and not insurance advice.

This product uses the Federal Emergency Management Agency's National Risk Index dataset 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).