Tornadoes and Hail in Wisconsin, April 27, 1984

Name: Tornadoes and Hail in Wisconsin, April 27, 1984
Start: 1984-04-27T02:49
End: 1984-04-27T17:15
Location: Wisconsin

April 27, 1984 · 54 events in 33 counties and zones

28 thunderstorm wind, 14 tornado, 12 hail, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 3
Injuries: 42
Property damage: $68 million
Crop damage: None recorded
Events: 54

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.

Event by event

28 thunderstorm wind, 14 tornado, 12 hail. Local standard time, as filed.

Hail, La Crosse

When: April 27, 2:49 AM CST
Where: La Crosse County
Measured: 0.75 in hail
Coordinates: 43.920, -91.250

Thunderstorm Wind, Trempealeau

When: April 27, 2:58 AM CST
Where: Trempealeau County
Coordinates: 44.070, -91.450

Thunderstorm Wind, Dunn

When: April 27, 3:00 AM CST
Where: Dunn County
Coordinates: 44.880, -91.920

Thunderstorm Wind, Crawford

When: April 27, 3:00 AM CST
Where: Crawford County
Coordinates: 43.250, -91.050

Thunderstorm Wind, Trempealeau

When: April 27, 3:15 AM CST
Where: Trempealeau County
Coordinates: 44.350, -91.420

Thunderstorm Wind, Sawyer

When: April 27, 3:30 AM CST
Where: Sawyer County
Coordinates: 45.900, -91.480

Thunderstorm Wind, Crawford

When: April 27, 3:30 AM CST
Where: Crawford County
Coordinates: 43.400, -90.770

Thunderstorm Wind, Clark

When: April 27, 4:00 AM CST
Where: Clark County
Coordinates: 44.630, -90.420

Tornado, Wood

When: April 27, 4:05 AM CST
Where: Wood County
Rating: F0
Path length: 1 mi
Path width: 3 yd
Property damage: $250,000
Coordinates: 44.300, -89.770

Hail, Wood

When: April 27, 4:05 AM CST
Where: Wood County
Measured: 0.75 in hail
Coordinates: 44.430, -90.050

Hail, Sauk

When: April 27, 4:10 AM CST
Where: Sauk County
Measured: 0.75 in hail
Coordinates: 43.470, -89.730

Thunderstorm Wind, Wood

When: April 27, 4:10 AM CST
Where: Wood County
Coordinates: 44.430, -90.050

Hail, Wood

When: April 27, 4:15 AM CST
Where: Wood County
Measured: 1.75 in hail
Coordinates: 44.380, -89.820

Thunderstorm Wind, Wood

When: April 27, 4:26 AM CST
Where: Wood County
Coordinates: 44.670, -90.170

Hail, Wood

When: April 27, 4:40 AM CST
Where: Wood County
Measured: 1.75 in hail
Coordinates: 44.380, -89.820

Thunderstorm Wind, Marathon

When: April 27, 4:45 AM CST
Where: Marathon County
Coordinates: 44.870, -89.800

Thunderstorm Wind, Lincoln

When: April 27, 5:00 AM CST
Where: Lincoln County
Measured: 57 kt (66 mph)
Coordinates: 45.480, -89.500

Thunderstorm Wind, Oneida

When: April 27, 5:30 AM CST
Where: Oneida County
Coordinates: 45.870, -89.700

Thunderstorm Wind, Buffalo

When: April 27, 10:35 AM CST
Where: Buffalo County
Measured: 69 kt (79 mph)
Coordinates: 44.320, -91.920

Thunderstorm Wind, St. Croix

When: April 27, 11:20 AM CST
Where: St. Croix County
Coordinates: 45.020, -92.430

Thunderstorm Wind, La Crosse

When: April 27, 11:32 AM CST
Where: La Crosse County
Measured: 61 kt (70 mph)
Coordinates: 43.800, -91.250

Thunderstorm Wind, Barron

When: April 27, 11:35 AM CST
Where: Barron County
Measured: 52 kt (60 mph)
Coordinates: 45.400, -91.870

Thunderstorm Wind, Jackson

When: April 27, 12:05 PM CST
Where: Jackson County
Coordinates: 44.370, -90.930

Thunderstorm Wind, Crawford

When: April 27, 12:10 PM CST
Where: Crawford County
Measured: 52 kt (60 mph)
Coordinates: 43.450, -90.730

Thunderstorm Wind, Clark

When: April 27, 12:30 PM CST
Where: Clark County
Coordinates: 44.730, -90.500

Thunderstorm Wind, Richland

When: April 27, 12:30 PM CST
Where: Richland County
Coordinates: 43.430, -90.450

Thunderstorm Wind, Richland

When: April 27, 12:51 PM CST
Where: Richland County
Coordinates: 43.430, -90.450

Thunderstorm Wind, Taylor

When: April 27, 1:00 PM CST
Where: Taylor County
Coordinates: 45.200, -90.530

Tornado, Bayfield

When: April 27, 1:25 PM CST
Where: Bayfield County
Rating: F0
Path length: 0.3 mi
Path width: 3 yd
Property damage: $25,000
Coordinates: 46.500, -91.020

Thunderstorm Wind, Ashland

When: April 27, 1:45 PM CST
Where: Ashland County
Coordinates: 46.320, -90.650

Thunderstorm Wind, Portage

When: April 27, 2:05 PM CST
Where: Portage County
Coordinates: 44.450, -89.500

Tornado, Adams

When: April 27, 2:10 PM CST
Where: Adams County
Rating: F1
Path length: 2 mi
Path width: 220 yd
Property damage: $250,000
Coordinates: 43.730, -89.630

Hail, Portage

When: April 27, 2:12 PM CST
Where: Portage County
Measured: 1.5 in hail
Coordinates: 44.480, -89.520

Tornado, Portage

When: April 27, 2:15 PM CST
Where: Portage County
Rating: F2
Path length: 5.5 mi
Path width: 20 yd
Property damage: $250,000
Coordinates: 44.370, -89.530

Thunderstorm Wind, Dane

When: April 27, 2:18 PM CST
Where: Dane County
Measured: 56 kt (64 mph)
Coordinates: 43.120, -89.650

Hail, Waushara

When: April 27, 2:26 PM CST
Where: Waushara County
Measured: 1.75 in hail
Coordinates: 44.180, -89.250

Tornado, Oneida

When: April 27, 2:37 PM CST
Where: Oneida County
Rating: F3
Path length: 16 mi
Path width: 87 yd
Deaths: 1 direct, 0 indirect
Injuries: 5 direct, 0 indirect
Property damage: $25 million
Coordinates: 45.670, -89.820

Thunderstorm Wind, Oneida

When: April 27, 2:40 PM CST
Where: Oneida County
Coordinates: 45.630, -89.650

Hail, Waushara

When: April 27, 2:46 PM CST
Where: Waushara County
Measured: 1.75 in hail
Coordinates: 44.180, -89.250

Tornado, Langlade

When: April 27, 2:50 PM CST
Where: Langlade County
Rating: F2
Path length: 7.5 mi
Path width: 7 yd
Injuries: 1 direct, 0 indirect
Property damage: $2.5 million
Coordinates: 45.200, -89.220

Tornado, Vilas

When: April 27, 2:50 PM CST
Where: Vilas County
Rating: F3
Path length: 13 mi
Path width: 87 yd
Injuries: 3 direct, 0 indirect
Property damage: $25 million
Coordinates: 45.900, -89.630

Tornado, Waupaca

When: April 27, 2:55 PM CST
Where: Waupaca County
Rating: F3
Path length: 8 mi
Path width: 43 yd
Property damage: $2.5 million
Coordinates: 44.530, -88.920

Tornado, Shawano

When: April 27, 3:03 PM CST
Where: Shawano County
Rating: F3
Path length: 17 mi
Path width: 43 yd
Property damage: $2.5 million
Coordinates: 44.670, -88.880

Hail, Green Lake

When: April 27, 3:12 PM CST
Where: Green Lake County
Measured: 0.75 in hail
Coordinates: 43.970, -88.930

Thunderstorm Wind, Waupaca

When: April 27, 3:15 PM CST
Where: Waupaca County
Coordinates: 44.630, -88.830

Tornado, Menominee (C)

When: April 27, 3:20 PM CST
Where: Menominee (C) County
Rating: F3
Path length: 7 mi
Path width: 440 yd
Property damage: $2.5 million
Coordinates: 44.930, -88.820

Tornado, Winnebago

When: April 27, 3:20 PM CST
Where: Winnebago County
Rating: F4
Path length: 12 mi
Path width: 60 yd
Deaths: 1 direct, 0 indirect
Injuries: 10 direct, 0 indirect
Property damage: $2.5 million
Coordinates: 44.080, -88.750

Hail, Winnebago

When: April 27, 3:34 PM CST
Where: Winnebago County
Measured: 1.75 in hail
Coordinates: 44.150, -88.720

Tornado, Outagamie

When: April 27, 3:40 PM CST
Where: Outagamie County
Rating: F4
Path length: 15.5 mi
Path width: 60 yd
Injuries: 9 direct, 0 indirect
Property damage: $2.5 million
Coordinates: 44.250, -88.530

Thunderstorm Wind, Shawano

When: April 27, 3:40 PM CST
Where: Shawano County
Coordinates: 44.730, -88.450

Hail, Winnebago

When: April 27, 3:45 PM CST
Where: Winnebago County
Measured: 1 in hail
Coordinates: 44.270, -88.400

Hail, Winnebago

When: April 27, 3:45 PM CST
Where: Winnebago County
Measured: 1 in hail
Coordinates: 44.030, -88.750

Tornado, Waukesha

When: April 27, 4:39 PM CST
Where: Waukesha County
Rating: F4
Path length: 6.5 mi
Path width: 10 yd
Deaths: 1 direct, 0 indirect
Injuries: 14 direct, 0 indirect
Property damage: $2.5 million
Coordinates: 42.980, -88.370

Tornado, Washington

When: April 27, 5:15 PM CST
Where: Washington County
Rating: F0
Path length: 0.4 mi
Path width: 33 yd
Property damage: $25,000
Coordinates: 43.270, -88.170

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Kind
Tornado, Oneida	1984-04-27	Direct
Tornado, Winnebago	1984-04-27	Direct
Tornado, Waukesha	1984-04-27	Direct

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Wisconsin in 1984 Every state in 1984 This day in weather history The tornado archive for Wisconsin, 1984

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. Each event’s entry at NCEI: 10158798, 10158799, 10158800, 10158801, 10158802, 10158803, 10158804, 10158805, 10158806, 10158807, 10158808, 10158809, 10158954, 10158955, 10158956, 10158957, 10158958, 10158959, 10158960, 10158961, 10158962, 10158963, 10158964, 10158965, 10158966, 10158967, 10158968, 10158969, 10158970, 10158971, 10158972, 10158973, 10158974, 10158975, 10158976, 10158977, 10158978, 10158979, 10158980, 10158981, and more.