Wisconsin

Storm History: Waukesha County, Wisconsin

845 episodes, 1,260 events since 1954

Every storm the National Weather Service has filed in Waukesha County, Wisconsin: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
1,260
Deaths
9
Injuries
51
Damage
$289 million
Episodes
845

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Waukesha County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Tornado242334$47 million
Hail21803$25 million
Winter Weather14520
Thunderstorm Wind12101$8.0 million
Flash Flood12026$199 million
Flood7201$7.6 million
Dense Fog7210
Winter Storm7000$97,000
Strong Wind4300$162,000
Heat3110
Cold/Wind Chill2500
High Wind1904$1.5 million
Drought1800$250,000
Lightning1602$533,000
Excessive Heat1100
Extreme Cold/Wind Chill1000$3,000
Blizzard900$44,000
Heavy Snow700
Ice Storm400$20,000
Heavy Rain400$34,000
Funnel Cloud100
Dust Devil100$200
Lake-Effect Snow100

The deadliest

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

The strongest tornadoes

Every tornado in Waukesha County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Waukesha CountyEvery warning in Waukesha County since 1986Every county in Wisconsin

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.