County Hazards

Storm events on record through

Milwaukee County, Wisconsin Storm events, disaster declarations and flood insurance claims on record

This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).

NCEI has 1,108 storm events on record for Milwaukee County, Wisconsin, from 1950 through 30 Jun 2026.

The newest event on record is an excessive heat event on 30 Jun 2026.

FEMA has 22 disaster declarations on record for the county from 1964 through 1 Oct 2026. The newest is DR-4923 of 30 Jun 2026.

OpenFEMA has 2,435 NFIP claims on record for the county from 1978 through 8 Sep 2026. The NFIP paid $29 million on these claims.

The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.

The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.

Zone (NWS Forecast Zone): A zone is a geographic area defined by the NWS for issuing forecasts, watches, and warnings. While zones often align with counties, they can also represent smaller or subdivided areas within a county to account for differences in weather conditions, such as elevation or proximity to water. Larger-scale events—such as heat, cold, drought, and winter storms—are typically recorded by zone.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .

This is raw, unedited data from FEMA's National Emergency Management Information System (NEMIS) and as such is subject to a small percentage of human error.

The words of the agency. Source: FEMA, OpenFEMA Dataset "Disaster Declarations Summaries - v2", copied on . The page gives: last data refresh 2026-10-01.

It is derived from the National Flood Insurance Program system of record, staged in the program's reporting platform and redacted to protect policy holder personally identifiable information.

The words of the agency. Source: FEMA, OpenFEMA Dataset "NFIP Redacted Claims - v3", copied on . The page gives: last data refresh 2026-09-09.

Dates of the data: NCEI storm events through . OpenFEMA disaster declarations through . NFIP claims through .

Since the last update: no change is on record for Milwaukee County. The site compares the agency data at each update. Updates of the data

The five hazards

Storm events on record for Milwaukee County by hazard and period (NCEI, through 30 Jun 2026)
Hazard1950 to 20262000 to 20092010 to 20192020 to 2026Newest event
Hail212575061
Tornado19202
Flood76261226
Wind325828047
Winter227659559
Other event types249Heat, cold, drought, wildfire, lightning, fog, tropical and other types
All storm events1,108350309223

A hazard name opens the page of that hazard for the county. A hazard has a page from 10 events. The year 2026 has the events through 30 Jun 2026 only.

Forecast zones with the name of the county give 509 of the 1,108 events. A county count has the events that NCEI gives to the county. It also has the events of a forecast zone that has the name of the county. A zone with another name counts for the state only.

Rates of Milwaukee County beside the total of the counties of Wisconsin and of the United States
MeasureMilwaukeeAll counties of WisconsinAll counties of the United States
Storm events for each 100 square miles, 1950 to 2026458.884.649.3
Storm events for each 10,000 residents, 1950 to 202611.977.752.5
NFIP claims for each 1,000 policies in force, 2016 to 2025286.0220.2185.3

The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. The site gives a rate for each 10,000 residents only from 10,000 residents. Residents and area: Census Bureau, 2021.

Newest storm events on record

Excessive Heat

On record for the forecast zone

Excessive Heat

On record for the forecast zone

High Wind77 mph (67 knots, measured gust)

On record for the forecast zone. Damage estimate: $250 thousand

Hail1.00 in, quarter size

1 mile W of (MKE)MITCHELL APT MI

Hail1.00 in, quarter size

1 mile N of (MKE)MITCHELL APT MI

Hail1.00 in, quarter size

1 mile NW of GREENFIELD

Flash Flood

2 miles S of BUTLER

TornadoEF1

2 miles SSW of FRANKLIN ARPT. Damage estimate: $105 thousand

Flood

2 miles E of GRANVILLE

Flash Flood

1 mile ESE of WAUWATOSA. Damage estimate: $25 thousand

Hail1.00 in, quarter size

1 mile N of HALES CORNERS

Flash Flood

1 mile S of WHITE FISH BAY. Damage estimate: $40 thousand

Thunderstorm Wind58 mph (50 knots, estimated gust)

1 mile SE of WEST ALLIS. Damage estimate: $10 thousand

Thunderstorm Wind49 mph (43 knots, estimated gust)

2 miles SSE of BUTLER. Damage estimate: $15 thousand

Thunderstorm Wind58 mph (50 knots, estimated gust)

1 mile ESE of WEST MILWAUKEE. Damage estimate: $30 thousand

Thunderstorm Wind61 mph (53 knots, measured gust)

1 mile W of MILWAUKEE TIMMERMAN AIRPORT

Hail1.00 in, quarter size

1 mile W of MILWAUKEE TIMMERMAN AIRPORT

Blizzard

On record for the forecast zone

Winter Weather

On record for the forecast zone

High Wind68 mph (59 knots, measured gust)

On record for the forecast zone. Damage estimate: $50 thousand

Winter Weather

On record for the forecast zone

Extreme Cold/Wind Chill

On record for the forecast zone

Winter Weather

On record for the forecast zone

Winter Weather

On record for the forecast zone

Winter Weather

On record for the forecast zone

The 25 events above are the newest in the NCEI record. A place is the text of the NCEI record: a distance and a direction from a reference place. Wind speed is in miles per hour, with the knots that NCEI gives. The site does not show a place text that names a private property or reads as a person. Download these events (CSV)

Storm events on record for Milwaukee County by year, 1950 to 2026
DecadeYear that ends in 0Year that ends in 1Year that ends in 2Year that ends in 3Year that ends in 4Year that ends in 5Year that ends in 6Year that ends in 7Year that ends in 8Year that ends in 9All
1950s00000010214
1960s315783014436
1970s012236372228
1980s10323726114654
1990s373161013181825104
2000s43282918243062524123350
2010s30263526422432213736309
2020s26194434383626 (part of the year)223

A darker cell has a larger count. The number is in each cell.

NCEI recorded tornado events from 1950, and hail and thunderstorm wind events from 1955. It recorded all event types from 1996. A count before 1996 has fewer event types.

FEMA disaster declarations

FEMA has 22 disaster declarations on record for Milwaukee County from 1964 through 1 Oct 2026. The newest is DR-4923: SEVERE STORMS, TORNADOES, AND FLOODING.

Disaster declarations that name Milwaukee County (OpenFEMA, through 1 Oct 2026)
DeclaredNumberTypeIncident typeTitle in the FEMA recordAssistance
DR-4923Major disasterFloodSEVERE STORMS, TORNADOES, AND FLOODINGIndividual
DR-4892Major disasterFloodSEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, AND MUDSLIDESIndividual
DR-4520Major disasterBiologicalCOVID-19 PANDEMICIndividual, Public
EM-3454EmergencyBiologicalCOVID-19Public
DR-4477Major disasterFloodSEVERE WINTER STORM AND FLOODINGPublic
DR-1966Major disasterSnowstormSEVERE WINTER STORM AND SNOWSTORMPublic
DR-1933Major disasterSevere StormSEVERE STORMS, TORNADOES, AND FLOODINGIndividual, Public
DR-1768Major disasterSevere StormSEVERE STORMS, TORNADOES, AND FLOODINGIndividual, Public
EM-3285EmergencySnowstormRECORD SNOW AND NEAR RECORD SNOWPublic
EM-3249EmergencyHurricaneHURRICANE KATRINA EVACUATIONPublic
DR-1526Major disasterSevere StormSEVERE STORMS AND FLOODINGIndividual
EM-3163EmergencySnowstormSNOWPublic
DR-1332Major disasterSevere StormSEVERE STORMS, TORNADOES, AND FLOODINGIndividual, Public
DR-1238Major disasterSevere StormSEVERE STORMS AND FLOODINGIndividual, Public
DR-1180Major disasterSevere StormSEVERE STORMS AND FLOODINGIndividual, Public
DR-994Major disasterSevere StormSEVERE STORMS, TORNADOES & FLOODINGIndividual, Public
DR-775Major disasterFloodSEVERE STORMS & FLOODINGIndividual
DR-770Major disasterFloodSEVERE STORMSIndividual, Public
EM-3069EmergencySnowstormBLIZZARDS & SNOWSTORMSPublic
DR-496Major disasterFloodSEVERE STORMS, ICING, WIND & FLOODINGIndividual, Public
DR-376Major disasterFloodSEVERE STORMS & FLOODINGIndividual, Public
DR-264Major disasterFloodSEVERE STORMS & FLOODINGIndividual, Public

DR is a major disaster declaration. EM is an emergency declaration. FM is a fire management assistance declaration. A declaration for the whole state is on the Wisconsin page. What a disaster declaration is

The dataset includes declared recovery programs and geographic areas (county not available before 1964; Fire Management records are considered partial due to historical nature of the dataset).

The words of the agency. Source: FEMA, OpenFEMA Dataset "Disaster Declarations Summaries - v2", copied on . The page gives: last data refresh 2026-10-01.

Flood insurance claims (NFIP)

OpenFEMA has 2,435 NFIP claims on record for Milwaukee County from 1978 through 8 Sep 2026.

The NFIP paid $29,049,938 on 1,921 claims.

The county has 286.0 NFIP claims for each 1,000 policies in force. The rate uses 304 claims with a year of loss from 2016 to 2025. FEMA counts 1,063 residential policies in force on 3 Aug 2026. The claims have every type of building. FEMA counts residential policies only.

NFIP claims in Milwaukee County by year of loss, 1978 to 2026
DecadeYear that ends in 0Year that ends in 1Year that ends in 2Year that ends in 3Year that ends in 4Year that ends in 5Year that ends in 6Year that ends in 7Year that ends in 8Year that ends in 9All
1970s312253
1980s19151682481321151
1990s720801113648688341,411
2000s393602651151379241
2010s2388051022345277
2020s8362027112 (part of the year)302

A darker cell has a larger count. The number is in each cell.

NFIP claims by year of loss with the amount paid: 44 years
NFIP claims in Milwaukee County by year of loss, with the amount paid (OpenFEMA, through 8 Sep 2026)
Year of lossClaimsClaims with a paymentAmount paid
2026128$124,482
2025271246$11,801,337
20232not shownnot shown
20226not shownnot shown
20213not shownnot shown
202086$154,768
20195not shownnot shown
20184not shownnot shown
20173not shownnot shown
20162not shownnot shown
20152not shownnot shown
2014105$11,488
20135not shownnot shown
20118not shownnot shown
2010238204$3,378,785
200998$49,527
2008137101$858,776
20075not shownnot shown
2006115$10,672
20055not shownnot shown
20042617$36,697
20026not shownnot shown
20013not shownnot shown
20003920$85,896
19993418$107,473
1998688580$5,664,002
1997648562$6,254,230
199613not shownnot shown
199511not shownnot shown
19938not shownnot shown
19912not shownnot shown
19907not shownnot shown
19891not shownnot shown
19882not shownnot shown
19873not shownnot shown
19868146$180,752
19854not shownnot shown
19842not shownnot shown
19838not shownnot shown
1982169$11,093
1981155$9,090
1980199$12,043
19792217$77,780
19783120$36,975

A year with fewer than 5 claims shows the count of claims and no amount. A year with 1 to 4 claims with a payment shows no amount either. Such an amount could point to one property. The amount is the sum of the building, contents and increased cost of compliance payments. FEMA counts 262 multiple-loss properties in the county (2 Aug 2026). How FEMA redacts NFIP claims

This dataset is not intended to be an official federal report, and should not be considered an official federal report.

Note, the County Code field may not reflect the individual county the property is located as projects can be associated with more than one county

The words of the agency. Source: FEMA, OpenFEMA Dataset "NFIP Redacted Claims - v3", copied on . The page gives: last data refresh 2026-09-09.

FEMA cannot verify the quality and/or timeliness of any data or any analysis derived therefrom after the data has been retrieved from FEMA.gov.

The words of the agency. Source: FEMA, OpenFEMA Terms and Conditions, copied on . The page gives: last updated 2025-01-22.

National Risk Index

Risk Index rating
Relatively High
Risk Index score
98.4 of 100
Expected Annual Loss rating
Relatively High
Expected Annual Loss
$342 million
Social Vulnerability rating
Relatively High
Community Resilience rating
Very High
National Risk Index of Milwaukee County by hazard type (FEMA, December 2025 release)
Hazard typeRisk Index ratingExpected Annual Loss
Coastal floodingVery Low$7,398
Cold waveVery High$176,515,399
DroughtVery Low$1,319
EarthquakeRelatively Low$1,534,732
HailRelatively Moderate$1,124,706
Heat waveRelatively High$25,038,203
HurricaneVery Low$4,642
Ice stormRelatively Moderate$287,026
Inland floodingRelatively High$101,356,287
LandslideVery Low$290
LightningRelatively Moderate$308,993
Strong windRelatively High$2,613,958
TornadoVery High$32,480,218
WildfireVery Low$11,840
Winter weatherVery High$818,966

The National Risk Index dataset leverages available source data for natural hazard and community risk factors to develop a baseline relative risk measurement for each United States county and Census tract.

The rating is a qualitative categorization that describes the community in comparison to all other communities at the same level, ranging from “Very Low” to “Very High.”

The National Risk Index data are meant for planning purposes only.

The words of the agency. Source: FEMA, National Risk Index Data: Frequently Asked Questions (December 2025, v1.20), copied on .

The labels and the ratings are those of FEMA. Expected Annual Loss is a figure for a whole county. It is not a figure for a property. How to read the National Risk Index

Tropical storm and hurricane tracks

The HURDAT2 record of the National Hurricane Center has 1 track within 100 miles of the centre point of the county, through the 2025 season. 0 of them were within 50 miles at hurricane strength.

Storm names, years and distances: 1 track
Tropical storm and hurricane tracks within 100 miles of the centre point of Milwaukee County (NHC HURDAT2)
Storm nameYearNearest point of the trackHighest wind within 100 miles
Unnamed Atlantic storm190043 miles58 mph

A name is the storm name that the National Hurricane Center gave. The distance is from the centre line of the track. It does not show how far the wind, the rain or the surge of a storm went.

ZIP Codes, cities and towns of Milwaukee County

Each ZIP Code below has a page with its NFIP claims by year. 9 more ZIP Codes have fewer than 5 claims and no page.

A city or town has no page of its own. This page is the record for the whole county, which has these places:

  • Bayside
  • Brown Deer
  • Cudahy
  • Fox Point
  • Franklin
  • Glendale
  • Greendale
  • Greenfield
  • Hales Corners
  • Milwaukee
  • Oak Creek
  • River Hills
  • Shorewood
  • South Milwaukee
  • St. Francis
  • Wauwatosa
  • West Allis
  • West Milwaukee
  • Whitefish Bay

Official channels

These links open the pages of the agencies. The site checked the links on .

Cite this page

County Hazards. "Milwaukee County, Wisconsin: storm events, disaster declarations and flood insurance claims on record". https://countyhazards.com/county/wi/milwaukee/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026; FEMA OpenFEMA disaster declarations through 1 Oct 2026; FEMA OpenFEMA NFIP claims through 8 Sep 2026. Page made on .

Where the data comes from

  • Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026.
  • Disaster declarations: OpenFEMA Disaster Declarations Summaries, read on 1 Oct 2026.
  • NFIP claims: OpenFEMA NFIP Claims, as of 8 Sep 2026. Multiple-loss properties: 2 Aug 2026. Policies in force: 3 Aug 2026.
  • National Risk Index: FEMA, December 2025 release. Storm tracks: NHC HURDAT2 through the 2025 season.
  • Residents, area, places and adjacent counties: US Census Bureau, 2021 vintage.

How the counts are made · Corrections · Hazards in all states: hail, tornado, flood, wind, winter

Questions

How many tornado events are on record for Milwaukee County?
NCEI has 19 tornado events on record for Milwaukee County from 1950 through 30 Jun 2026. 7 events have a rating of EF2 or F2, or a higher rating.
How large is the hail on record for Milwaukee County?
NCEI has 212 hail events on record from 1955 through 30 Jun 2026. 16 events have a hail size of 1.75 inches or more. NCEI names 1.75 inches a golf ball.
Which month has the most storm events on record for Milwaukee County?
June has 160 of the 1,108 storm events on record from 1950 through 30 Jun 2026.
How many NFIP claims are there for each 1,000 policies in force in Milwaukee County?
The county has 286.0 NFIP claims for each 1,000 policies in force. The rate uses 304 claims with a year of loss from 2016 to 2025. FEMA counts 1,063 residential policies in force on 3 Aug 2026. The claims have every type of building. FEMA counts residential policies only.