Wisconsin, 2006

Tornadoes and Hail in Wisconsin, June 6, 2006

June 6, 2006 · NWS MKX · 12 events in 6 counties and zones

Several supercell thunderstorms developed along a cold front across southwest Wisconsin and pushed east southeast into south-central Wisconsin during the late afternoon and early evening. Six tornadoes resulted from these storms (listed with details above) of the F0 to F1 variety across the counties of Sauk, Columbia, and Iowa.

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
0
Injuries
0
Property damage
$1.0 million
Crop damage
None recorded
Events
12

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.

What happened

The episode as NWS MKX wrote it up.

Several supercell thunderstorms developed along a cold front across southwest Wisconsin and pushed east southeast into south-central Wisconsin during the late afternoon and early evening. Six tornadoes resulted from these storms (listed with details above) of the F0 to F1 variety across the counties of Sauk, Columbia, and Iowa. A couple funnel clouds were reported in Green and Columbia counties, as well as large hail in Green Lake and Columbia counties, and thunderstorm wind damage in Dane and Columbia counties. Synoptically, with temperatures in the low or mid 70s and dewpoints in the mid 60s with cold air aloft, high instability resulted. Vertical wind shear, in addition to lift with the cold front, allowed supercell thunderstorms to develop. Sufficient low-level shear allowed tornadic development with two of the supercells.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before the first event at Jun 6, 1:15 PM CST, 4 hours 38 minutes earlier.

Area forecast discussion, Jun 6, 1:15 PM CST, 4 hours 38 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
215 PM CDT TUE JUN 6 2006

.DISCUSSION...FORECAST FOCUS ON THUNDERSTORM CHANCES TODAY AND
TONIGHT.

NAM ETA/WRF BOTH VERIFIED WELL WITH BAND OF MORNING SHOWERS
WEAKENING AS IT PUSHED OFF TO THE EAST.

FOR THIS AFTERNOON AND EVENING...MAIN PROBLEM IS ON HOW QUICK/OF IF
THE STRATO CUMULUS BECOMES SCATTERED SO INSTABILITY CAN INCREASE
AHEAD OF SHORTWAVE NEAR W TIP OF LAKE SUPERIOR.

IN THE UPPER LEVELS...AN ADVANCING JET  WILL MOVE SOUTHEAST INTO THE
UPPER MISSISSIPPI VALLEY THIS EVENING. LEFT FRONT QUAD TO AFFECT
MAINLY SOUTHEAST PORTION OF THE FORECAST AREA...WITH THE JET AXIS
BISECTING THE FORECAST AREA LATE TONIGHT.

PRECIPITABLE WATER VALUES 1.25 TO 1.5 INCHES WITH LOWER TO MID 60
DEWPOINTS. CURRENT RUC SOUNDINGS SHOW ENOUGH HEATING TO GENERATE
CAPES UP TO 1500 J/KG MAINLY ACROSS SOUTH CENTRAL WI...WITH MORE OF
A CAP ACROSS SOUTHEAST WISCONSIN THROUGH THE AFTERNOON.

BULK RICHARDSON NUMBERS IN THE AROUND 26 AND 0-3 KM STORM RELATIVE
HELICITY AROUND 150 M2/S2 ARE MARGINAL FOR SUPERCELLS. DRY MID LEVEL
AIR WILL ADVECT INTO SOUTHERN WI AS SHORTWAVE MOVES TOWARD MICHIGAN.
WET BULB ZERO HEIGHTS AROUND 9.5  THSD FT. EXPECT SCT STORMS TO
DEVELOP ALONG OR AHEAD OF THE SURFACE TROF LATER THIS AFT AND INTO
THE EVENING. WILL NOT MENTION SEVERE IN ZFP DUE TO MARGINAL WIND
SHEAR WHICH WILL LIMIT THE EXTENT AND SEVERITY...BUT SOME STORMS MAY
STILL BECOME SEVERE...AGAIN DEPENDING ON RECOVERY OF LOW LEVEL
TEMPERATURES.

DESPITE RATHER STEEP LOW LEVEL LAPSE RATES...DRY AIR...ESPECIALLY IN
MID LEVELS SHOULD KEEP THE FORECAST AREA DRY WEDNESDAY.

PREFER GFS WITH UPPER RIDGE WILL BUILD ACROSS THE PLAINS FOR WED/THU
WITH RIDGE OF SURFACE HIGH PRESSURE IN THE VICINITY THROUGH FRIDAY.
NAM SEEMS WAY TOO FAR NORTHEAST WITH DEVELOPING SURFACE LOW.

A MORE ZONAL FLOW LATER IN THE WEEKEND AND EARLY NEXT WEEK.
DEPENDING ON UPSTREAM OFFICES...LATEST GFS WOULD INDICATE SURFACE
HIGH TO DOMINATE INTO SATURDAY.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

HENTZ
Hazardous weather outlook, Jun 6, 6:45 AM CST, 11 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
745 AM CDT TUE JUN 6 2006

WIZ046-047-051-052-056>060-062>072-070900-
COLUMBIA-DANE-DODGE-FOND DU LAC-GREEN-GREEN LAKE-IOWA-JEFFERSON-
KENOSHA-LAFAYETTE-MARQUETTE-MILWAUKEE-OZAUKEE-RACINE-ROCK-SAUK-
SHEBOYGAN-WALWORTH-WASHINGTON-WAUKESHA-
745 AM CDT TUE JUN 6 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING.
THERE IS A SLIGHT RISK THAT SOME OF THESE THUNDERSTORMS COULD BECOME
SEVERE. THE MAIN SEVERE WEATHER THREATS WILL BE LARGE HAIL AND
DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

MORE THUNDERSTORMS ARE POSSIBLE SATURDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

LMZ643>646-665-070900-
NORTH POINT LIGHTHOUSE TO WIND POINT-
PORT WASHINGTON TO NORTH POINT LIGHTHOUSE-
SHEBOYGAN WI TO PORT WASHINGTON-
WIND POINT TO WINTHROP HARBOR ILLINOIS-
745 AM CDT TUE JUN 6 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING.
THERE IS A SLIGHT RISK THAT SOME OF THESE THUNDERSTORMS COULD BECOME
SEVERE. THE MAIN SEVERE WEATHER THREATS WILL BE LARGE HAIL AND WIND
GUSTS IN EXCESS OF 30 KNOTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

MORE THUNDERSTORMS ARE POSSIBLE SATURDAY THROUGH MONDAY.

MBK

In the hours before

Local storm report, Jun 6, 5:40 PM CST, 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
640 PM CDT TUE JUN 06 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0638 PM     HAIL             SPRING GREEN            43.18N 90.07W
06/06/2006  E0.25 INCH       SAUK               WI   TRAINED SPOTTER

            WINDS ESTIMATED AT 30-40 MPH.

&&

GD

The radar

The La Crosse radar (KARX), 120 km away, was scanning. The volume nearest the first event began at 23:51 UTC.

Open the radar archive at this moment

Event by event

6 tornado, 2 thunderstorm wind, 2 hail, 2 funnel cloud. Local standard time, as filed.

Tornado, Iowa

When
June 6, 5:53 PM CST to 5:55 PM CST
Where
Iowa County, 3 mi SW of Helena
Rating
F0
Path length
0.2 mi
Path width
25 yd
Reported by
NWS STORM SURVEY
Coordinates
43.133, -90.050

A tornado spun up 2.8 miles southwest of Helena at 1753CST on the Wisconsin River just west/northwest of the STH 23 bridge that crosses the river. It moved southeast and on-shore just east of the bridge and quickly dissipated at 1755CST. The tornado resulted in only minor tree damage and was rated F0 with winds around 50 knots (58 mph).

Tornado, Columbia

When
June 6, 5:54 PM CST to 6:13 PM CST
Where
Columbia County, 3 mi E of Wisconsin Dells
Rating
F1
Path length
6.1 mi
Path width
200 yd
Property damage
$400,000
Reported by
NWS STORM SURVEY
Coordinates
43.633, -89.700

The first segment of a multi-county-segmented tornado spun up 3.0 miles east of Wisconsin Dells at 1754CST about 0.6 mile east-northeast of the intersection of Broadway Rd. and CTH Q. It headed southeast and crossed STH 16 at Lewiston, and then crossed the Wisconsin River into Sauk County about 1.5 miles southeast of Lewiston at 1813CST. In this first Columbia County stretch, around 10 houses were damaged or destroyed, along with a couple pole sheds and many trees and power lines. An estimated 400,000 dollars in property damage occurred. The tornado was rated F1 with winds of 64 to 97 knots (73-112 mph). After a short track through Sauk County, this tornado re-entered Columbia County about 7 miles west of Portage, crossed Interstate 90/94, and then crossed the Wisconsin River again before dissipating at 1840CST.

Thunderstorm Wind, Columbia

When
June 6, 5:55 PM CST
Where
Columbia County, 3 mi NE of Lewiston
Measured
56 kt (64 mph) estimated gust
Reported by
TRAINED SPOTTER
Coordinates
43.617, -89.600

Trees down.

Hail, Columbia

When
June 6, 5:55 PM CST
Where
Columbia County, 3 mi NE of Lewiston
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
43.617, -89.600

Tornado, Sauk

When
June 6, 6:13 PM CST to 6:17 PM CST
Where
Sauk County, 9 mi ESE of Lake Delton
Rating
F0
Path length
1.6 mi
Path width
100 yd
Property damage
$1,000
Reported by
NWS STORM SURVEY
Coordinates
43.533, -89.633

This tornado segment is the 2nd of a three-segment tornado (Columbia-Sauk-Columbia). The first segment started in Columbia County about 3.0 miles east of Wisconsin Dells. This second segment entered Sauk County about 8.5 miles east-southeast of Lake Delton at 1813CST (or about 0.6 mile northeast of the intersection of N Hein Rd. and Levee Rd.) and headed southeast. It exited Sauk County about 10.1 miles east-southeast of Lake Delton at 1817CST where Levee Rd. goes east into Columiba County. The tornado caused a tree to fall onto a home which caused 1000 dollars in property damage. The tornado during this second county segment had weakened a bit down to the F0 rating with winds of 35-63 knots (40-72 mph). Overall, this three-segment tornado path length was 16.9 miles with a time span of 1754CST to 1840CST.

Tornado, Iowa

When
June 6, 6:14 PM CST to 6:25 PM CST
Where
Iowa County, 6 mi NNW of Ridgeway
Rating
F0
Path length
2.7 mi
Path width
30 yd
Reported by
NWS STORM SURVEY
Coordinates
43.067, -90.033

A tornado spun up 5.6 miles NNW of Ridgeway at 1814CST just south of Erdman Rd. (or about 1.5 WNW of an unincorporated hamlet of Hyde). It headed southeast for 2.7 miles and dissipated 3.3 miles NNE of Ridgeway at 1825 CST near a big curve on Dugway Rd. This tornado resulted in only minor tree damage and was rated F0 with winds around 50 knots (58 mph).

Tornado, Columbia

When
June 6, 6:17 PM CST to 6:40 PM CST
Where
Columbia County, 7 mi W of Portage
Rating
F1
Path length
9.2 mi
Path width
200 yd
Property damage
$600,000
Reported by
NWS STORM SURVEY
Coordinates
43.550, -89.583

This tornado segment is a third, county-segment, continuation of a tornado that initially spun up in far northwestern Columbia County about 3.0 miles east of Wisconsin Dells at 1754CST and then crossed into Sauk County about 1.5 miles southeast of Lewiston at 1813CST. This tornado re-entered Columbia County about 7.0 miles west of Portage at 1817CST where Levee Rd. on the south side of the Wisconsin River exits Columbia County going west. The heading of this tornado was southeast, and it crossed Interstate 90/94 near Tritz Road where a vehicle swerved and caused a semitrailer to roll onto its side. It eventually passed through a residential trailer complex/camp ground south of the Cascade Ski Resort. It crossed Interstate 90/94 where Ziehmke Rd approached the Interstate from the east. At this point, the tornado caused a semitrailer to be blown off the road. The tornado then tracked over the extreme eastern edge of Pickerel Lake, crossed over the Wisconsin River for the second time, and dissipated about 1.0 mile southwest of Dekorra at 1840CST, just short of CTH V. Around 10 houses were damaged, along with a barn, a couple pole sheds, and many trees and power lines. The tornado caused about 600,000 dollars in property damage, and was rated F1 with winds of 64-97 knots (73-112 mph). The tornado was well-photographed and filmed. Overall, this F1 Columbia-Sauk-Columbia County tornado path length was 16.9 miles with a beginning time of 1754CST and an ending time of 1840CST.

Tornado, Iowa

When
June 6, 6:33 PM CST to 6:35 PM CST
Where
Iowa County, 2 mi W of Barneveld
Rating
F0
Path length
0.5 mi
Path width
30 yd
Property damage
$5,000
Reported by
NWS STORM SURVEY
Coordinates
43.017, -89.933

A tornado spun up 1.5 miles west of Barneveld at 1833 CST just northwest of the intersection of STH 18/151 and Ihm-Harris Rd. It traveled southeast across the intersection of these two roads and dissipated about 100 yards southeast of the intersection about 1.4 miles WSW of Barneveld at 1835CST. About 5,000 dollars in damage occurred to a shed and home. The tornado was rated an F0 with winds around 56 knots (65 mph).

Funnel Cloud, Columbia

When
June 6, 7:15 PM CST
Where
Columbia County, Arlington
Reported by
TRAINED SPOTTER
Coordinates
43.467, -89.334 (the zone’s center; the record gives no point)

Thunderstorm Wind, Dane

When
June 6, 7:30 PM CST
Where
Dane County, 2 mi E of Waunakee
Measured
70 kt (81 mph) estimated gust
Property damage
$5,000
Reported by
NEWSPAPER
Coordinates
43.183, -89.417

Around 1930 CST (830 PM CDT) thunderstorm wind gusts took a roof off a house 2 miles east of Waunakee. Winds were estimated at 70 knots (80 mph). About 5,000 dollars in damage resulted.

Funnel Cloud, Green

When
June 6, 7:45 PM CST
Where
Green County, 3 mi N of Monticello
Reported by
LAW ENFORCEMENT
Coordinates
42.680, -89.602 (the zone’s center; the record gives no point)

Hail, Green Lake

When
June 6, 8:40 PM CST
Where
Green Lake County, Marquette
Measured
0.88 in hail
Reported by
GENERAL PUBLIC
Coordinates
43.750, -88.867

What these are

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.
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.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.

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

The same day elsewhere

More

Every storm in Wisconsin in 2006Every state in 2006This day in weather historyThe tornado archive for Wisconsin, 2006Warnings in Wisconsin, June 2006

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: 5515318, 5515374, 5515320, 5515321, 5515322, 5515319, 5515375, 5515376, 5515377, 5515378, 5515379, 5515437.