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Wisconsin Dells, WI Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Wisconsin Dells is about the same as Wisconsin average and is much lower than the national average. The risk of tornado damage in Wisconsin Dells is higher than Wisconsin average and is higher than the national average.

Topics:Earthquake IndexVolcano IndexTornado IndexOther Weather Extremes EventsVolcanos NearbyHistorical Earthquake EventsHistorical Tornado Events

Earthquake Index, #308

Wisconsin Dells, WI
0.00
Wisconsin
0.00
U.S.
1.81

The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.

Volcano Index, #1

Wisconsin Dells, WI
0.0000
Wisconsin
0.0000
U.S.
0.0023

The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.

Tornado Index, #254

Wisconsin Dells, WI
182.66
Wisconsin
153.98
U.S.
136.45

The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.

Other Weather Extremes Events

A total of 3,078 other weather extremes events within 50 miles of Wisconsin Dells, WI were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:7Cold:39Dense Fog:72Drought:26
Dust Storm:0Flood:183Hail:886Heat:39Heavy Snow:55
High Surf:0Hurricane:0Ice Storm:11Landslide:0Strong Wind:53
Thunderstorm Winds:1,305Tropical Storm:0Wildfire:5Winter Storm:86Winter Weather:53
Other:258 

Volcanos Nearby

No volcano is found in or near Wisconsin Dells, WI.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Wisconsin Dells, WI.

No historical earthquake events found in or near Wisconsin Dells, WI.

Historical Tornado Events

A total of 73 historical tornado events that had recorded magnitude of 2 or above found in or near Wisconsin Dells, WI.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
10.61966-08-15243°25'N / 90°08'W43°34'N / 89°35'W29.30 Miles200 Yards01250K0Sauk
13.01965-05-25243°32'N / 90°00'W0.30 Mile50 Yards0825K0Sauk
13.01966-08-15243°34'N / 89°35'W43°36'N / 89°29'W4.90 Miles200 Yards00250K0Columbia
16.01964-05-08243°45'N / 89°58'W43°59'N / 89°37'W23.50 Miles150 Yards00250K0Juneau
18.81967-03-31243°38'N / 90°11'W43°40'N / 90°08'W1.90 Miles33 Yards00250K0Wood
19.12005-08-18243°22'N / 89°54'W43°21'N / 89°41'W11.10 Miles200 Yards00600K20KSauk
 Brief Description: This tornado spun up from the same supercell thunderstorm that spawned the "Viola" tornado earlier in Vernon and Richland counties. This Sauk County tornado spun up at 1633CST about 3.6 miles northeast of Leland, or about 1/4 mile south of the intersection of Ruff and Pine Hollow Roads. The tornado headed east-southeast for about 11.1 miles in Sauk County, and crossed the Columbia County line at 1655CST about 4.5 miles north-northeast of Prairie du Sac, between Wiegans Bay and a boat launch site. This tornado crossed CTH C about 0.5 mile west of Stones Pocket Road, and moved through old Badger Ammunition Plant just south of the greatest density of roads within the Plant grounds. This rain-wrapped tornado was video taped and photographed, and damaged many structures, trees, and power-lines. As for residential buildings, 10 received minor damage, 1 had major damage, and one was destroyed. One business building had minor damage. As for agricultural buildings, 5 received minor damage, and 6 were destroyed. This tornado was rated an F2 with estimated winds of 98-136 knots (113-157 mph). Average path width was about 150 yards. The largest single-day tornado outbreak in Wisconsin recorded history for south-central and southeast Wisconsin occurred on August 18, 2005. Sixteen tornadoes were documented on this day in south-central and southeast Wisconsin, a new single-day record. A line of supercells developed and pushed across south-central Wisconsin during the afternoon hours, and then pushed east across southeast Wisconsin during the evening hours. Most of the tornadoes were associated with two supercells. One main supercell tracked across Sauk County and then into Columbia, producing one F0 and one F2 tornado. The F2 tornado crossed into Columbia County. Another main supercell produced an F3 tornado that devastated the area north of city of Stoughton (Dane Co.), and a weaker F1 tornado just south of the city of Rockdale (Dane Co.). This supercell then tracked into southwestern Jefferson County a short time later, producing two F0 tornadoes and four F1 tornadoes. The sixteen (16) tornadoes contributed largely to both the new state record of 27 tornadoes on a single day, and 62 tornadoes for a calendar year. In additiion, there were scattered reports of funnel clouds, damaging straight-line, downburst winds, and large hail across south-central and southeast Wisconsin. The total direct damage estimate for the afternoon and evening tornado and severe weather outbreak in south-central and southeast Wisconsin on August 18th was about $36.6 M ($35.7 property and $948 K crop). Additional indirect costs totaled almost $1.9 M, resulting in a total direct and direct cost of about $38.5 M. Synoptically, a surface low pressure system was located over extreme southeast Minnesota early in the afternoon. A warm front extended east southeast from the low with dew points pooling in the lower 70s along it. The surface low moved east into east central Wisconsin by 2100CST that evening. Favorable wind shear associated with the warm front, combined with the strong instability supplied by the heat and humidity, helped to produce numerous tornadic supercells.
19.91980-07-19243°55'N / 89°52'W2.00 Miles33 Yards0025K0Adams
21.41994-07-04243°18'N / 89°45'W43°22'N / 89°37'W8.00 Miles500 Yards005.0M500KSauk
22.51989-06-26243°25'N / 90°07'W0.30 Mile73 Yards00250K0Sauk
22.62005-08-18243°21'N / 89°41'W43°19'N / 89°32'W3.40 Miles200 Yards0010K10KColumbia
 Brief Description: This tornado was a continuation of the "Leland" F2 Sauk County tornado that passed through the Badger Ammunition Plant grounds. It crossed into Columbia County from Sauk County at 1655CST about 5.4 miles west of Okee, or 1.2 miles northwest of the intersection of Gastrow Road and STH 188. This tornado headed east-southeast for 3.4 miles, while weakening, and ended at 1703CST about 3.2 miles southeast of Okee, or 0.2 mile southeast of the intersection of CTH J and Occonor Road. Some tree, power-line, and crop damage was noted, resulting in a F1 damage rating in Columbia County. Average path width was about 125 yards. The largest single-day tornado outbreak in Wisconsin recorded history for south-central and southeast Wisconsin occurred on August 18, 2005. Sixteen tornadoes were documented on this day in south-central and southeast Wisconsin, a new single-day record. A line of supercells developed and pushed across south-central Wisconsin during the afternoon hours, and then pushed east across southeast Wisconsin during the evening hours. Most of the tornadoes were associated with two supercells. One main supercell tracked across Sauk County and then into Columbia, producing one F0 and one F2 tornado. The F2 tornado crossed into Columbia County. Another main supercell produced an F3 tornado that devastated the area north of city of Stoughton (Dane Co.), and a weaker F1 tornado just south of the city of Rockdale (Dane Co.). This supercell then tracked into southwestern Jefferson County a short time later, producing two F0 tornadoes and four F1 tornadoes. The sixteen (16) tornadoes contributed largely to both the new state record of 27 tornadoes on a single day, and 62 tornadoes for a calendar year. In additiion, there were scattered reports of funnel clouds, damaging straight-line, downburst winds, and large hail across south-central and southeast Wisconsin. The total direct damage estimate for the afternoon and evening tornado and severe weather outbreak in south-central and southeast Wisconsin on August 18th was about $36.6 M ($35.7 property and $948 K crop). Additional indirect costs totaled almost $1.9 M, resulting in a total direct and direct cost of about $38.5 M. Synoptically, a surface low pressure system was located over extreme southeast Minnesota early in the afternoon. A warm front extended east southeast from the low with dew points pooling in the lower 70s along it. The surface low moved east into east central Wisconsin by 2100CST that evening. Favorable wind shear associated with the warm front, combined with the strong instability supplied by the heat and humidity, helped to produce numerous tornadic supercells.
22.91984-10-16243°46'N / 90°05'W44°02'N / 90°02'W17.00 Miles100 Yards03250K0Juneau
23.02004-06-23243°49'N / 89°29'W43°46'N / 89°16'W11.00 Miles200 Yards001.0M500KMarquette
 Brief Description: A strong tornado spun up about a half-mile east of Interstate 39/STH 51, near the intersection of Fawn Ct. and CTH M, or 3.5 NNW of Packwaukee. This tornado increased to F2 strength (estimated 140-150 mph) as it tore east/southeast through the southern part of Montello. Numerous trees were uprooted. Four homes were destroyed, 25 sustained major damage, and 142 had minor damage. In addition, 9 agricultural buildings were damaged or destroyed. The tornado ended in a swampy, Fox River bottom-land area about 4 miles southeast of Montello (1 mile short of the county line and south of CTH C and east STH 22). The responsible supercell also spun up a different tornado earlier in Adams County. Prop damage estimated at $1.0 M. Average path width was about 175 yards. Two rounds of severe weather affected parts of south-central and southeast Wisconsin on June 23rd, with the second round featuring 8 tornadoes, large hail (up to golf-ball size), and powerful straight-line downburst winds. A warm front moving north through the area resulted in favorable vertical wind shear to allow for supercell development. The 1st round of severe weather was due to a broken line of intense thunderstorms moving across Walworth, Milwaukee, Racine and Kenosha counties. Hail of up to 1 inch in diameter and torrential rainfall accompanied these storms before they moved over Lake Michigan and weakened. The 2nd round of severe weather was dominated by 2 cyclic supercells - one moved east/southeast through Marquette, Green Lake, Fond du Lac, and Washington Counties, spinning up 5 separate tornadoes, dumping hail stones up to 3 inches in diameter, and hurricane-force downburst winds. The large hail dented several vehicles. Two of these were rated F3. Refer to the individual tornado reports for more details. A more southerly supercell tracked across extreme southern Sauk County and then made a partial right turn and headed southeast through Dane County, spinning up 2 tornadoes in the process, as well as large hail and downburst winds. One powerful downburst wind in Madison (Dane Co.) blew equipment off the roof of a business at the Midvale Shopping Mall. A semi southwest of Ft. Atkinson was blown over by straight-line wind gusts. This southern supercell eventually spun up another tornado in south-central Jefferson County which moved into north-central Walworth County. Refer to the individual tornado reports for more details. Both supercells had downbursts that generated large hail and powerful, hurricane-force winds north and south of their tracks. Over all of Wisconsin, 16 tornadoes were documented on June 23rd, which is the 4th highest single-day total (record is 24 on May 8, 1988). For south-central and southeast Wisconsin, the 8 tornadoes on June 23rd was tied for the 4th highest single-day total (record is 11 on May 8, 1988).
23.81984-07-10243°58'N / 89°58'W43°58'N / 89°52'W4.00 Miles500 Yards002.5M0Adams
24.61963-08-16343°18'N / 89°43'W43°18'N / 89°31'W9.60 Miles33 Yards013250K0Columbia
24.61963-08-16343°18'N / 89°43'W43°18'N / 89°31'W9.60 Miles33 Yards013250K0Columbia
24.61963-08-16343°18'N / 89°43'W43°18'N / 89°31'W9.60 Miles33 Yards013250K0Columbia
24.61979-08-09243°39'N / 90°19'W43°38'N / 90°14'W2.70 Miles50 Yards00250K0Juneau
24.91951-07-03243°29'N / 90°14'W0.50 Mile50 Yards0025K0Richland
25.71966-04-19243°38'N / 90°20'W43°45'N / 90°15'W8.60 Miles17 Yards00250K0Vernon
25.91954-07-30243°19'N / 89°35'W43°19'N / 89°26'W7.10 Miles100 Yards000K0Columbia
26.71985-08-12243°50'N / 90°18'W44°00'N / 90°00'W17.00 Miles880 Yards2222.5M0Juneau
27.31955-07-31243°58'N / 89°30'W43°57'N / 89°26'W2.70 Miles50 Yards00250K0Marquette
28.01979-08-09243°39'N / 90°22'W43°39'N / 90°19'W00250K0Vernon
28.61959-07-08243°53'N / 89°24'W43°56'N / 89°18'W5.20 Miles50 Yards0025K0Marquette
29.31964-05-04243°51'N / 90°17'W43°57'N / 90°12'W7.70 Miles100 Yards0025K0Juneau
29.41984-06-08243°20'N / 89°22'W43°27'N / 89°14'W16.00 Miles50 Yards00250K0Columbia
29.51954-07-30243°19'N / 89°26'W43°29'N / 89°09'W18.10 Miles100 Yards000K0Pierce
30.01985-08-12243°47'N / 90°22'W43°50'N / 90°18'W5.00 Miles880 Yards002.5M0Monroe
30.91957-04-19343°44'N / 90°26'W43°50'N / 90°18'W9.00 Miles400 Yards00250K0Monroe
31.61957-04-19443°52'N / 90°11'W44°10'N / 90°05'W21.10 Miles300 Yards1025K0Juneau
31.62008-06-07243°31'N / 89°15'W43°30'N / 89°06'W9.00 Miles3520 Yards062.5M500KColumbia
 Brief Description: EVENT NARRATIVE: This tornado was extremely wide since the thunderstorm cloud base was very low and the meso-cyclone that is usually aloft was well-formed all the way to the ground. Within a broad 1 to 2 mile wide area of EF0 to EF1 damage, there were several small swaths of EF2 damage due to multiple votices. The accompanying graphic shows this effect. With respect to residential homes this tornado resulted in very minor damage to 150, minor damage to 30, major damage to 10, and 2 were destroyed (total residential damage of $2 million). With respect to agricultural buildings ($500K in total damage), this tornado resulted in minor damage to 20, and major damage to 2 buildings (inlcuding silos). Tens of thousands of trees were uprooted or chewed-up, and many power-lines and power-poles were either toppled or damaged. About 4000 to 6000 trees on a tree farm were destroyed at a location about 3 miles east-southeast of Pardeeville. This tree-farm loss was treated as a crop loss. Additionally, some corn and soybean crops were damaged. This tornado started just southeast of the intersection of CTH P and Pardeeville Road, and moved southeastward for about 4 miles and then traveled east-southeast to end just northeast of the western intersection of STH 146 and CTH A. The specific starting point and ending point lat/long numbers were 43.53333/-89.26306 and 43.49556/-89.09878, respectively. Additional mid-point pairs of number include: 43.51603/-8922394, 43.50728/-89.20151, and 43.50208/-89.17679. DI#24 (ELT), DOD4. The wind speeds were estimated at about 120 mph. Average path length was about 1760 yards (1 mile). EPISODE NARRATIVE: A slow-moving surface boundary, nearly parallel with the mid-level flow affected southern Wisconsin during the period of June 7th through June 9th. A strengthening low-level jet and strong moisture advection produced several rounds of thunderstorms during the period in the vicinity of this boundary. The atmosphere was very moist with precipitable water values around 2 inches. Low to mid-level wind flow supported training of flood-producing thunderstorms. There was sufficient vertical wind shear to allow for supercell development that resulted in 10 tornadoes spinning up in south-central and southeast Wisconsin on June 7th. A weak cool front pushed through southern Wisconsin late on the 8th/early on the 9th, finally ending the heavy rainfall. During the evening of June 7th, several roads near STH 89 south of Columbus were washed out. STH 16 east of Columbus closed on June 8th due to high waters. A state-of-emergency was declared in Milwaukee County the evening of June 7th due to widespread flash flooding, and Milwaukee Mitchell Field was close for several hours due to high water levels.
31.71984-06-07543°05'N / 89°50'W43°17'N / 89°31'W26.00 Miles450 Yards00250K0Columbia
32.01988-05-08243°17'N / 90°27'W43°31'N / 90°13'W20.00 Miles150 Yards00250K0Richland
32.21951-09-26443°28'N / 89°15'W43°32'N / 89°05'W9.00 Miles100 Yards19250K0Columbia
32.41976-07-30243°14'N / 89°27'W000K0Dane
32.41963-09-02243°10'N / 89°53'W43°11'N / 89°26'W22.50 Miles33 Yards010K0Iowa
33.11964-05-08243°33'N / 90°29'W43°38'N / 90°24'W6.50 Miles300 Yards000K0Richland
33.91988-05-08243°10'N / 89°20'W43°15'N / 89°34'W7.00 Miles100 Yards0125K0Dane
34.71984-06-08343°27'N / 89°14'W43°38'N / 88°58'W23.00 Miles200 Yards012.5M0Columbia
34.81984-06-08243°15'N / 89°20'W43°17'N / 89°17'W3.00 Miles50 Yards002.5M0Dane
36.01984-06-08243°17'N / 89°17'W43°28'N / 89°02'W15.00 Miles50 Yards002.5M0Columbia
38.22005-08-18243°30'N / 90°40'W43°28'N / 90°22'W13.00 Miles40 Yards032.5M75KRichland
 Brief Description: Six tornadoes affected southwest Wisconsin, which was part of an all-time one day record of 27 tornadoes hitting the state. The first tornado touched down briefly just west of Centerville (Trempealeau County). The only damage reported with this tornado was several trees knocked down just north of Highway 35 along County Road G. A second and stronger tornado occurred just north of County Highway KK, or just west of Esofea (Vernon County). There was tree, agricultural and structural damage. A moblie home, which was on cement blocks, was completely destroyed. The occupant of the mobile home was taken to a hospital with minor injuries. Another residence sustained minor damage, with windows blown out, outbuildings destroyed and a car turned 90 degrees. Power poles were snapped, corn was flattened and there was significant tree damage. The third and strongest tornado touched down just west of Liberty (Vernon County), then tracked along a continous path just north of Highway 56, to the northern most block of the town of Viola (Richland County). Three people were reported injured in Viola and almost every tree in the town was damaged or downed. Most homes in the village had at least minor damage, while a few sustained major damage, including roofs blown off. Many garages facing west or southwest were destroyed by the direct impact of the winds. Wind speeds associated with the tornado were estimated at 100 to 120 mph. The tornado path became more sporadic as it moved east of Viola across northern Richland County. The damage path extended from just north of County Highway MM and Highway 56 into Bloom City (Richland County), which apparently took a direct hit from the storm. The tornado continued on an east-southeast track, before lifting just west of Hub City (Richland County). A fourth tornado touched down along County Road N, or just east of the location where Interstate 90 and 94 split in eastern Monroe County. This tornado continued on a 10 mile track into Juneau County, ending just west of the Necedah Wildlife Refuge Headquarters. There was tree, agricultural and structural damage. A home, which was under construction, was completely destroyed. Three other homes sustained minor damage. Corn was flattened and there was significant tree damage as well. A fifth tornado touched down in the town of Muscoda (Grant County) causing minor damage to homes, but knocking down or shearing off numerous trees. This tornado crossed the Wisconsin River into the small community of Orion (Richland County). Several mobile homes were damaged, including several reportedly tossed into the air. Many trees were damaged there as well. The sixth and final tornado briefly touched down near the intersection of Highway 82 and 13 in Adams County. Mobile homes were damaged, along with nearby trees. Richland and Vernon County were declared federal disaster areas.
38.21983-07-03344°05'N / 90°14'W1.00 Mile50 Yards08250K0Juneau
39.21967-08-02343°08'N / 89°27'W43°07'N / 89°26'W2525K0Dane
40.31975-06-04343°14'N / 89°14'W43°14'N / 89°10'W2.30 Miles33 Yards0025K0Dane
40.41964-05-08243°30'N / 90°40'W43°33'N / 90°29'W9.30 Miles300 Yards02250K0Richland
40.41984-06-08343°38'N / 88°58'W43°43'N / 88°59'W6.00 Miles200 Yards002.5M0Green Lake
40.92004-06-23343°43'N / 89°02'W43°39'N / 88°54'W9.40 Miles400 Yards001.4M500KGreen Lake
 Brief Description: A strong tornado spun up near the intersection of STH 73 and CTH H, about 2 miles north of the village of Manchester. It increased its strength to F3 (estimated 175-200 mph) as it moved southeast across the southern part of the city of Markesan. Numerous trees were uprooted. At least 18 homes or ag-buildings had minor damage, at least 9 homes or ag-buildings had major damage, and at least 21 homes or ag-buildings were destroyed. This tornado exited Green Lake County at a point 6.4 miles southeast of Markesan, just south of Lake Maria Rd., and continued southeast through Fond du Lac County. The responsible supercell also spun up different tornadoes earlier in Adams and Marquette Counties. Newspaper headline: "A Day Like No Other." Average path width was about 350 yards. Two rounds of severe weather affected parts of south-central and southeast Wisconsin on June 23rd, with the second round featuring 8 tornadoes, large hail (up to golf-ball size), and powerful straight-line downburst winds. A warm front moving north through the area resulted in favorable vertical wind shear to allow for supercell development. The 1st round of severe weather was due to a broken line of intense thunderstorms moving across Walworth, Milwaukee, Racine and Kenosha counties. Hail of up to 1 inch in diameter and torrential rainfall accompanied these storms before they moved over Lake Michigan and weakened. The 2nd round of severe weather was dominated by 2 cyclic supercells - one moved east/southeast through Marquette, Green Lake, Fond du Lac, and Washington Counties, spinning up 5 separate tornadoes, dumping hail stones up to 3 inches in diameter, and hurricane-force downburst winds. The large hail dented several vehicles. Two of these were rated F3. Refer to the individual tornado reports for more details. A more southerly supercell tracked across extreme southern Sauk County and then made a partial right turn and headed southeast through Dane County, spinning up 2 tornadoes in the process, as well as large hail and downburst winds. One powerful downburst wind in Madison (Dane Co.) blew equipment off the roof of a business at the Midvale Shopping Mall. A semi southwest of Ft. Atkinson was blown over by straight-line wind gusts. This southern supercell eventually spun up another tornado in south-central Jefferson County which moved into north-central Walworth County. Refer to the individual tornado reports for more details. Both supercells had downbursts that generated large hail and powerful, hurricane-force winds north and south of their tracks. Over all of Wisconsin, 16 tornadoes were documented on June 23rd, which is the 4th highest single-day total (record is 24 on May 8, 1988). For south-central and southeast Wisconsin, the 8 tornadoes on June 23rd was tied for the 4th highest single-day total (record is 11 on May 8, 1988).
40.91967-06-11243°11'N / 89°16'W43°12'N / 89°13'W1.30 Miles10 Yards00250K0Dane
41.41992-08-29344°04'N / 89°31'W44°08'N / 89°00'W28.00 Miles800 Yards13025.0M0Waushara
41.71954-04-15243°59'N / 89°11'W44°03'N / 89°05'W5.90 Miles33 Yards0025K0Waushara
42.11980-04-07343°29'N / 88°58'W1.20 Miles67 Yards04250K0Dodge
42.61984-06-07542°58'N / 89°59'W43°05'N / 89°50'W10.00 Miles450 Yards9200250K0Iowa
42.91968-04-20243°06'N / 89°21'W0.10 Mile33 Yards0025K0Dane
42.91954-04-07243°08'N / 90°23'W43°10'N / 90°15'W6.40 Miles400 Yards0425K0Iowa
43.01956-04-03243°06'N / 90°15'W43°09'N / 90°18'W3.00 Miles200 Yards00250K0Iowa
43.11979-05-10243°59'N / 90°30'W0025K0Monroe
43.11968-08-19243°45'N / 88°58'W43°45'N / 88°54'W2.30 Miles50 Yards0125K0Green Lake
43.32004-06-23343°40'N / 88°57'W43°39'N / 88°53'W4.00 Miles300 Yards11675K300KGreen Lake
 Brief Description: A strong tornado spun up about a mile directly east of Lake Maria in southeastern Green Lake County, or about 4.2 miles SSE of Markesan, moved east along Sunny Drive with F3 strength (estimated 175-200), and exited Green Lake County along Mielke Rd., or about 6.8 miles SE of Markesan. Numerous trees were uprooted. At least 8 homes or ag-buildings had minor damage, at least 5 homes or ag-buildings had major damage, and at least 5 homes or ag-buildings were destroyed. Near the intersection of Sunny Drive and Pleasant Drive, two people and most basement items were "sucked" out of their home's basement while the home was being destroyed. The husband was found dead and his wife was critically injured. Average path width was about 275 yards. M53PH Two rounds of severe weather affected parts of south-central and southeast Wisconsin on June 23rd, with the second round featuring 8 tornadoes, large hail (up to golf-ball size), and powerful straight-line downburst winds. A warm front moving north through the area resulted in favorable vertical wind shear to allow for supercell development. The 1st round of severe weather was due to a broken line of intense thunderstorms moving across Walworth, Milwaukee, Racine and Kenosha counties. Hail of up to 1 inch in diameter and torrential rainfall accompanied these storms before they moved over Lake Michigan and weakened. The 2nd round of severe weather was dominated by 2 cyclic supercells - one moved east/southeast through Marquette, Green Lake, Fond du Lac, and Washington Counties, spinning up 5 separate tornadoes, dumping hail stones up to 3 inches in diameter, and hurricane-force downburst winds. The large hail dented several vehicles. Two of these were rated F3. Refer to the individual tornado reports for more details. A more southerly supercell tracked across extreme southern Sauk County and then made a partial right turn and headed southeast through Dane County, spinning up 2 tornadoes in the process, as well as large hail and downburst winds. One powerful downburst wind in Madison (Dane Co.) blew equipment off the roof of a business at the Midvale Shopping Mall. A semi southwest of Ft. Atkinson was blown over by straight-line wind gusts. This southern supercell eventually spun up another tornado in south-central Jefferson County which moved into north-central Walworth County. Refer to the individual tornado reports for more details. Both supercells had downbursts that generated large hail and powerful, hurricane-force winds north and south of their tracks. Over all of Wisconsin, 16 tornadoes were documented on June 23rd, which is the 4th highest single-day total (record is 24 on May 8, 1988). For south-central and southeast Wisconsin, the 8 tornadoes on June 23rd was tied for the 4th highest single-day total (record is 11 on May 8, 1988).
43.71964-09-03343°12'N / 90°38'W43°18'N / 90°19'W17.10 Miles800 Yards04250K0Richland
45.91957-04-19244°04'N / 89°24'W44°14'N / 89°00'W22.80 Miles50 Yards0125K0Waushara
46.01992-09-07243°54'N / 89°02'W43°58'N / 88°53'W8.50 Miles400 Yards012.5M0Green Lake
46.21964-05-07244°14'N / 90°13'W44°15'N / 90°08'W3.30 Miles30 Yards013K0Juneau
47.01964-05-08243°26'N / 90°43'W43°30'N / 90°40'W4.50 Miles300 Yards00250K0Vernon
47.11956-04-03443°56'N / 88°58'W43°59'N / 88°56'W1.90 Miles440 Yards7502.5M0Green Lake
47.51950-06-25343°57'N / 88°57'W43°58'N / 88°56'W00250K0Green Lake
47.51981-06-15243°05'N / 89°13'W1.00 Mile33 Yards00250K0Dane
48.91970-07-07244°19'N / 89°31'W2.00 Miles100 Yards0025K0Portage
49.21985-05-30242°55'N / 89°49'W42°57'N / 89°25'W21.00 Miles100 Yards00250K0Dane
49.41983-07-03442°58'N / 90°08'W0.50 Mile50 Yards0025K0Iowa
49.61964-08-22244°18'N / 89°36'W44°22'N / 89°30'W6.40 Miles333 Yards0025K0Portage
49.71969-06-29242°54'N / 89°52'W42°56'N / 89°47'W3.80 Miles100 Yards00250K0Iowa
50.01955-04-18242°50'N / 90°08'W43°02'N / 89°55'W17.30 Miles67 Yards000K0Iowa


* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.


 
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