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Berkeley School District 87 Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Berkeley School District 87 is about the same as Illinois average and is lower than the national average. The risk of tornado damage in Berkeley School District 87 is about the same as Illinois average and is much higher than the national average.

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

Earthquake Index, #168

Berkeley School District 87
0.40
Illinois
0.24
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

Berkeley School District 87
0.0000
Illinois
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, #393

Berkeley School District 87
229.78
Illinois
220.15
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 4,050 other weather extremes events within 50 miles of Berkeley School District 87 were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:8Cold:63Dense Fog:82Drought:38
Dust Storm:0Flood:403Hail:1,011Heat:88Heavy Snow:65
High Surf:0Hurricane:0Ice Storm:13Landslide:0Strong Wind:81
Thunderstorm Winds:1,794Tropical Storm:0Wildfire:4Winter Storm:85Winter Weather:55
Other:260 

Volcanos Nearby

No volcano is found in or near Berkeley School District 87.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Berkeley School District 87.

No historical earthquake events found in or near Berkeley School District 87.

Historical Tornado Events

A total of 84 historical tornado events that had recorded magnitude of 2 or above found in or near Berkeley School District 87.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
2.31976-03-12241°55'N / 87°55'W41°56'N / 87°54'W0252.5M0Du Page
6.81965-05-26241°59'N / 87°55'W42°00'N / 87°53'W00250K0Cook
7.41959-09-26241°58'N / 87°58'W42°02'N / 87°48'W9.30 Miles33 Yards00250K0Du Page
8.01965-05-26241°54'N / 88°10'W41°59'N / 87°55'W13.80 Miles70 Yards011250K0Du Page
9.41970-04-30242°00'N / 87°54'W42°03'N / 87°49'W4.90 Miles33 Yards0925K0Cook
10.01976-03-12241°56'N / 87°54'W42°06'N / 87°42'W15.10 Miles150 Yards2412.5M0Cook
10.01972-08-25242°02'N / 87°51'W1.80 Miles200 Yards012.5M0Cook
10.71973-04-21241°51'N / 88°06'W0.20 Mile33 Yards0025K0Cook
12.11965-11-12241°48'N / 88°06'W1.00 Mile20 Yards0025K0Du Page
12.11972-07-17241°52'N / 88°08'W002.5M0Du Page
12.21976-06-13441°42'N / 87°56'W41°44'N / 87°55'W00250K0Du Page
12.31966-04-19241°49'N / 88°07'W0.50 Mile40 Yards00250K0Du Page
13.51976-03-12341°43'N / 88°14'W41°51'N / 88°00'W14.80 Miles30 Yards032.5M0Du Page
13.71961-03-04241°54'N / 87°42'W41°59'N / 87°35'W7.90 Miles100 Yards111525.0M0Cook
14.11975-06-17242°05'N / 88°00'W1.50 Miles20 Yards00250K0Cook
14.41966-06-09242°06'N / 87°56'W2.50 Miles33 Yards1300K0Cook
14.61991-03-27341°40'N / 88°01'W41°42'N / 87°51'W9.20 Miles200 Yards0725.0M0Cook
14.91976-06-13441°40'N / 88°00'W41°42'N / 87°56'W3.30 Miles1760 Yards2232.5M0Cook
15.51966-06-09242°06'N / 88°01'W000K0Cook
17.01971-08-24241°46'N / 88°11'W1.00 Mile83 Yards02250K0Du Page
17.11967-04-21441°40'N / 87°50'W41°44'N / 87°33'W15.00 Miles200 Yards3350025.0M0Cook
18.31991-03-27341°38'N / 88°04'W41°40'N / 88°01'W2.80 Miles200 Yards0025.0M0Will
20.11954-05-27241°46'N / 88°20'W41°51'N / 88°13'W7.90 Miles200 Yards0025K0Kendall
21.01967-04-21242°00'N / 88°17'W0.30 Mile33 Yards00250K0Kane
21.81991-03-27341°35'N / 88°06'W41°38'N / 88°04'W3.00 Miles200 Yards0025.0M0Will
21.91956-08-23242°02'N / 88°17'W0025K0Kane
22.21956-08-23241°35'N / 87°47'W03250K0Cook
22.31962-06-23241°36'N / 87°43'W0.50 Mile100 Yards010250K0Cook
23.21965-11-12241°34'N / 87°48'W41°34'N / 87°47'W0025.0M0Cook
25.11976-03-12341°38'N / 88°21'W41°43'N / 88°14'W7.80 Miles30 Yards002.5M0Kendall
25.31967-04-21442°12'N / 88°12'W42°13'N / 88°06'W4.50 Miles150 Yards1972.5M0Lake
25.91967-04-21442°09'N / 88°16'W42°12'N / 88°12'W4.30 Miles150 Yards032.5M0Mchenry
26.01984-04-27341°35'N / 88°15'W41°37'N / 88°11'W4.00 Miles200 Yards152.5M0Will
26.11990-08-28541°38'N / 88°15'W41°31'N / 88°06'W11.20 Miles600 Yards29350250.0M0Will
26.21990-08-28541°41'N / 88°21'W41°38'N / 88°15'W5.20 Miles600 Yards00250K0Kendall
26.21993-08-15241°31'N / 87°58'W0.30 Mile20 Yards00500K0Will
 Brief Description: A tornado touched down briefly in a New Lenox subdivision. On house was nearly destroyed. The roof was torn off and there was severe damage to one wall. Another home sustained minor damage and trees were damaged.
26.41958-08-06241°44'N / 88°22'W2.00 Miles70 Yards00250K0Kane
26.51972-04-06241°32'N / 88°12'W41°34'N / 88°04'W6.80 Miles50 Yards122250K0Will
27.31965-11-12241°27'N / 88°15'W41°34'N / 87°48'W24.50 Miles120 Yards29025.0M0Will
27.61972-04-06241°31'N / 88°11'W41°33'N / 88°05'W5.10 Miles50 Yards00250K0Will
29.01965-05-26241°30'N / 87°42'W1.00 Mile50 Yards0025K0Cook
29.91972-09-28442°17'N / 87°52'W42°22'N / 87°50'W5.20 Miles220 Yards0202.5M0Lake
30.12008-06-07241°28'N / 87°44'W41°30'N / 87°40'W4.00 Miles150 Yards004.0M0KCook
 Brief Description: EVENT NARRATIVE: A tornado which touched down in northwest Will County, crossed Steger Road into Cook County, just west of Cicero Avenue. The tornado hit a subdivision on the northwest corner of Steger Road and Cicero Avenue. Large tree limbs were blown down and a couple trees were uprooted. Homes were somewhat sheltered by large trees and only sustained minor damage. One home near Cicero Avenue had part of its roof torn off. East of Cicero Avenue, the tornado weakened slightly as it moved through an apartment complex. Only minor damage to roofs, soffits and siding was noted. The tornado hit another subdivision along Imperial Drive. A few homes had garages partially collapsed or destroyed. The tornado then passed through an open area before crossing Governors Highway and the Illinois Central tracks, just south of Sauk Trail. The tornado hit an apartment complex just east of the highway and railroad tracks. One three story building had much of the roof ripped off and part of the third floor exterior walls blown down. Carports were collapsed and other buildings had minor damage. The tornado was rated EF2 in this area. The tornado moved through the intersection of Sauk Trail and Richton Square Road where a grocery store and car wash sustained damage. The tornado then weakened to EF0 intensity as it continued northeast across Central Park Avenue and the northwest part of Central Park. Only minor damage to trees was observed in a subdivision in this area. The tornado crossed the E J and E tracks, then it damaged a roof at an apartment complex near North Street and Orchard Drive. The last signs of tree damage were just southwest of the intersection of Lincoln Highway and Western Avenue. Multiple eyewitnesses reported a dog that was picked up by the tornado and carried a few hundred feet away. The dog, a 125 pound Rottweiler, was apparently unharmed. EPISODE NARRATIVE: A single supercell thunderstorm developed over western Illinois and moved northeast reaching Lake Michigan near the Illinois Indiana state line several hours later. This single thunderstorm produced eight different tornadoes as it moved east across Illinois.
30.21984-04-27341°33'N / 88°20'W41°35'N / 88°15'W5.00 Miles200 Yards002.5M0Kendall
31.01965-04-11442°17'N / 88°13'W42°17'N / 88°11'W000K0Lake
31.21978-08-15242°11'N / 88°22'W2.00 Miles100 Yards00250K0Mchenry
31.52008-06-07241°26'N / 87°46'W41°28'N / 87°44'W2.00 Miles150 Yards065.5M0KWill
 Brief Description: EVENT NARRATIVE: A tornado developed near Ridgeland Avenue and Dralle Road, where a high tension metal truss tower collapsed and four others were damaged. Power lines blocked Interstate 57. The tornado destroyed a mobile home and outbuildings east of Ridgeland between Dralle and Stuenkel Roads before crossing Interstate 57. The tornado was rated EF2 in this area. Six people were injured in vehicles on Interstate 57. Several cars were damaged and a semi trailer was completely destroyed. East of Interstate 57 at Stuenkel Road, a large warehouse had bay doors blown in, much of the roof collapsed, and the west wall blown in. Utility poles were pushed over along South Central Avenue. EPISODE NARRATIVE: A single supercell thunderstorm developed over western Illinois and moved northeast reaching Lake Michigan near the Illinois Indiana state line several hours later. This single thunderstorm produced eight different tornadoes as it moved east across Illinois.
32.11965-04-11442°13'N / 88°23'W42°17'N / 88°13'W9.10 Miles400 Yards6750K0Mchenry
33.11965-11-12341°33'N / 87°29'W41°34'N / 87°24'W4.10 Miles40 Yards014250K0Lake
33.51965-04-11242°23'N / 88°01'W42°22'N / 87°55'W4.50 Miles200 Yards00250K0Lake
33.72008-06-07241°24'N / 87°51'W41°25'N / 87°47'W4.00 Miles150 Yards00500K0KWill
 Brief Description: EVENT NARRATIVE: A tornado touched down along Paulding Road just west of Center Road, south of the Green Garden Country Club. A garage was leveled and a house had part of its roof torn off and damage to the second story exterior walls. At the southwest corner of Bruns and 88th Avenue, barns and trees were damaged. The tornado continued along Bruns Road between 80th and 88th Avenues. On the south side of Bruns Road, a barn and an outbuilding were completely destroyed. The house lost a large section of the southeast wall on the second floor. Another house was heavily damaged with siding and a west wall blown off. North of Bruns Road, there was a barn that was practically destroyed with only a partial wall standing. A horse barn was destroyed with the stables intact and horses still standing in them. In the backyard of the next home, there were trees blown down and debris, such as trailers and a small rowboat were blown into the creek immediately north of Bruns Road. A chain link fence was pulled from the ground. Many trees were uprooted and blown over. Power lines were also blown down. The next house had damage to two garages. The doors were blown out of both garages and the roof of one garage was severely damaged. The house had siding and roof shingles blown off. A house at the east end of this section on Bruns Road, closest to 80th Avenue, had siding blown off and chimney damage. The tornado ended southwest of the intersection of Harlem Avenue and Manhattan-Monee Road, where there was minor tree damage. EPISODE NARRATIVE: A single supercell thunderstorm developed over western Illinois and moved northeast reaching Lake Michigan near the Illinois Indiana state line several hours later. This single thunderstorm produced eight different tornadoes as it moved east across Illinois.
34.61997-05-18242°25'N / 88°03'W42°22'N / 87°54'W6.00 Miles75 Yards0000Lake
 Brief Description: A tornado touched down on the southeast side of Lindenhurst and damaged trees and the roofs of several homes. The tornado reached F2 intensity near Sand Lake Road and Route 45 where 2 barns were destroyed, two foot diameter oak trees were broken off or uprooted and the roof was taken off a nursery. Signs were blown down along Sand Lake Road and Stearns School Road. A subdivision on the north side of Gurnee had damage to trees, a chimney blown off a house, windows broken, walls damaged, a garage door blown in and a fence blown down. Three quater inch hail also occurred in Lindenhurst.
34.81963-04-19242°18'N / 88°18'W00250K0Mchenry
34.91959-10-08242°20'N / 88°14'W2.00 Miles90 Yards01250K0Mchenry
35.11958-10-09242°24'N / 88°12'W42°23'N / 87°52'W16.70 Miles33 Yards002.5M0Lake
35.32008-08-04241°33'N / 87°25'W41°33'N / 87°22'W3.00 Miles30 Yards001.0M0KLake
 Brief Description: EVENT NARRATIVE: A tornado touched down just northeast of the Ridge Road and Cline Avenue intersection. Damage occurred at the Griffith Park Plaza Mall where windows were blown out of a row of stores and a portion of a roof was blown off of a vacant store. The damage path continued to the east, behind the mall. Two parked semi-trailers in the back of the mall were shifted eastward while a third was completely knocked over. The area to the east of this mall in the subdivision along and north of 37th Avenue near Lafayette Avenue and Rensselaer Avenue sustained some of the strongest wind damage from this tornado. Two houses on Lafayette Avenue had their roofs blown off with another house on Rensselaer Avenue also having its roof collapsed and a garage door pushed inward. Other significant damage that occurred was at the Habitat for Humanity storage building at Colfax and Ridge Road. Here, a cinder block storage building completely toppled to the ground. Although the building was knocked over, it appears as though the main cause of it faltering was due to a large tree that fell on top of it. At a nearby gas station within feet of this building, no damage occurred and people actually witnessed the tornado descend on the shelter. EPISODE NARRATIVE: A line of powerful thunderstorms moved across northwest Indiana during the evening hours of August 4th. These storms produced widespread and significant wind damage.
35.51951-11-13241°36'N / 87°20'W0.30 Mile400 Yards00250K0Lake
35.91988-04-05241°16'N / 88°09'W41°30'N / 87°56'W23.00 Miles50 Yards000K0Will
36.01980-07-16242°07'N / 88°32'W1.40 Miles440 Yards00250K0Kane
36.91966-07-13241°30'N / 87°25'W0025K0Lake
36.92008-06-07241°21'N / 87°55'W41°22'N / 87°53'W2.00 Miles400 Yards0050K0KWill
 Brief Description: EVENT NARRATIVE: A tornado touched down northeast of Wilton Center, just north of Route 52 and east of Elevator Road, where there was minor tree damage. Based on photos and eyewitness reports, the tornado grew to about 400 yards wide but remained in open fields with few structures or trees in its path. At 120th Avenue, a garage was destroyed and all that remained was a cinder block base. A metal outbuilding was severely damaged. The tornado ended near Manhattan-Wilton Road, just west of Route 45. EPISODE NARRATIVE: A single supercell thunderstorm developed over western Illinois and moved northeast reaching Lake Michigan near the Illinois Indiana state line several hours later. This single thunderstorm produced eight different tornadoes as it moved east across Illinois.
38.61976-04-20242°27'N / 87°50'W0.80 Mile50 Yards0225K0Lake
38.61996-04-19242°27'N / 87°50'W42°27'N / 87°50'W2.00 Miles100 Yards026.6M0Lake
 Brief Description: The roof was torn off an apartment building. Over 400 homes and businesses sustained damage and 32 received major damage. Five trucks were overturned at a plant. Homes and garages had roof damage. Numerous trees were damaged or blown down. Injuries included a child with a broken leg and a woman cut by glass.
38.71961-04-23341°21'N / 88°13'W41°19'N / 87°31'W36.30 Miles33 Yards042.5M0Will
39.71962-07-20241°32'N / 87°25'W41°35'N / 87°08'W14.90 Miles33 Yards0025K0Lake
40.01965-11-12241°24'N / 88°28'W41°27'N / 88°15'W11.40 Miles120 Yards0025.0M0Grundy
40.82010-10-26241°18'N / 87°44'W41°20'N / 87°43'W2.00 Miles200 Yards02500K0KWill
 Brief Description: EVENT NARRATIVE: A tornado touched down about 4 miles east of Peotone. The tornado produced its most intense damage along South Will Center Road, about halfway between Corning Road and Peotone-Beacher Road, removing a house's roof, collapsing exterior walls on the second floor of the house, and completely destroying a garage and three other outbuildings. Two teenage boys were injured in the house. Four power poles were also downed just northeast of the area along Peotone-Beecher Road. Additional EF1 and EF0 damage was found along a path running southwest toward Kennedy Road. This damage consisted of collapsed outbuildings, snapped cedar trees, and damage to homes. One home on Corning Road was pushed off its foundation and the chimney collapsed. EPISODE NARRATIVE: A line of strong to severe thunderstorms moved across northern Illinois during the morning hours of October 26th. Three tornadoes were reported along with damaging winds.
42.21957-07-12241°23'N / 87°27'W00250K0Lake
42.51967-10-24341°33'N / 87°13'W0025K0Porter
43.81977-06-30241°31'N / 87°16'W41°33'N / 87°08'W6.80 Miles300 Yards012.5M0Lake
44.42008-06-07241°12'N / 88°12'W41°20'N / 88°00'W14.00 Miles200 Yards00500K0KWill
 Brief Description: EVENT NARRATIVE: A tornado touched down in far northwest Kankakee County then crossed County Line Road into Will County north of Essex. Tree tops were sheared off at Essex and Cooper Roads. A clear path could be seen in the trees at McGuire Road. At Route 113 and Smiley Road near Custer Park, trees were snapped and uprooted. Across the Kankakee River, a two story house had its roof completely removed and there was extensive tree damage. The tornado reached EF2 intensity at this point. The tornado continued across Route 102 near Ritchie where trees were damaged. The tornado crossed old Chicago Road near Kahler Road where power lines were blown down, a shed and barn were damaged and there was minor damage to a house. Another shed was destroyed. The tornado weakened as it moved from Symerton and Kennedy Roads to Warner Bridge and Arsenal Roads. There was no damage except to one tree. There was minor damage to a barn and tree limbs north of Arsenal Road before the tornado dissipated. EPISODE NARRATIVE: A single supercell thunderstorm developed over western Illinois and moved northeast reaching Lake Michigan near the Illinois Indiana state line several hours later. This single thunderstorm produced eight different tornadoes as it moved east across Illinois.
44.91976-03-12241°27'N / 87°16'W41°29'N / 87°13'W2.30 Miles200 Yards003K0Lake
45.01967-04-21442°17'N / 88°42'W42°21'N / 88°26'W14.00 Miles1200 Yards04025.0M0Mchenry
45.21976-03-12241°29'N / 87°13'W41°32'N / 87°10'W3.30 Miles33 Yards003K0Porter
45.61958-10-09242°25'N / 88°43'W42°24'N / 88°12'W26.20 Miles33 Yards102.5M0Mchenry
45.81973-04-19241°18'N / 88°18'W00250K0Grundy
47.31975-06-18242°03'N / 88°51'W42°02'N / 88°45'W4.70 Miles27 Yards01250K0De Kalb
47.41978-06-25241°32'N / 88°41'W0.90 Mile300 Yards0025K0La Salle
47.92009-08-19241°36'N / 87°04'W41°39'N / 87°01'W4.00 Miles60 Yards001.5M0KPorter
 Brief Description: EVENT NARRATIVE: A tornado touched down in southern Chesterton east of 11th Street and southwest of South Park Drive. The tornado quickly intensified as it moved to the northeast and caused the partial collapse of a gymnasium roof at the Chesterton Junior High School. A wind gust to 105 mph was measured by an anemometer near the school. This damage along with numerous trees that were either uprooted or sheared off was caused by tornado winds reaching 110 mph. The tornado was rated EF1 at this point with a path width of 40 yards. The tornado continued to track to the northeast across the New York Central railroad tracks toward Grant Avenue where the roof of a warehouse had been peeled off and thrown about 15 yards behind the building to the north. The tornado continued to the northeast where an apartment building on Brown Avenue lost its entire roof. This damage was caused by tornado winds reaching 120 mph. The tornado damage was rated EF2 through this area with a path width of 60 yards. In the city of Chesterton, 211 structures sustained damage; 8 were completely destroyed; 54 suffered major damage, such as trees falling through roofs. The remaining 149 structures sustained damage such as missing shingles or damaged gutters. Multiple vehicles were damaged by falling debris from buildings or trees. Numerous power lines were blown down along with utility poles blown down or snapped. This EF2 damage continued northeast where an entire field of healthy old hardwood tree trunks were snapped off or uprooted. The tornado then started to slightly weaken as it approached the Interstate 94 eastbound exit/westbound entrance ramps at Indiana Highway 49. A home south of the interstate had a garage roof blown off with still numerous trees uprooted or sheared off. Tornado wind speeds here were estimated at 100 mph with an EF1 rating. Similar tree damage was noted along a path that continued to go to the northeast across Highway 49 and toward Highway 20 near Hadenfelt Road where some aluminum roofing material of a storage facility had been peeled off. Tornado wind speeds were estimated at 95 mph here and was rated EF1 with a path width of 30 yards. The tornado continued to move through a heavily forested area in the Indiana Dunes National Lakeshore, eventually crossing Highway 12. Radar imagery and an aerial survey suggests that the tornado dissipated north of Highway 12. EPISODE NARRATIVE: Strong to severe thunderstorms moved across parts of northwest Indiana during the late afternoon and evening hours of August 19th, producing one tornado in Chesterton.
48.11958-08-15241°46'N / 89°28'W41°30'N / 88°04'W74.50 Miles100 Yards00250K0Lee
48.91988-04-05241°11'N / 88°17'W41°16'N / 88°09'W7.00 Miles50 Yards000K0Grundy
49.11974-06-20341°17'N / 87°25'W41°19'N / 87°20'W4.50 Miles150 Yards05250K0Lake
49.31954-06-01241°15'N / 87°29'W0025K0Lake
49.82008-01-07342°33'N / 88°18'W42°36'N / 88°08'W9.00 Miles200 Yards01513.7M0KKenosha
 Brief Description: EVENT NARRATIVE: This tornado in western Kenosha County was a continuation of the tornado that spun up 2.27 mils NE of Pell Lake in southeastern Walworth County. It crossed into Kenosha County about 0.4 mile north of where CTH U in Walworth County crosses the county line and becomes CTH F in Walworth County. The tornado continued northeast to just east of the intersection of STH 50 and CTH O, crossed STH 83 just north of 51st Street just north of New Munster Creek, passed through the Village of Wheatland, turned more east and crossed 308th Ave. just north of Peterson Creek, and then dissipated near a pond between CTH PH and 41st Street (Town Rd). Fifteen people in the Civil Town of Wheatland sustained minor injuries. Also in the Civil Town of Wheatland, 7 homes were affected, 25 sustained minor damage, 27 had major damage, and 25 were destroyed. In the Civil Town of Brighton, 10 homes were affected, 3 had minor damage, 3 had major damage, and 4 were destroyed. About 160 people were homeless due to residential damage. This tornado traveled over frozen ponds and creeks, as well as snow piles leftover from recent snowmelt. Average path width was about 100 yards. The wind speed was estimated at 150 to 160 mph (DI 2 - FR12, DOD 8). For a couple homes, the visual damage suggested an EF4 rating, however insufficient anchoring allowed these structures to fail at a lower wind speed. Additionally, other nearby damage indicators didn't support an EF4 rating. The specific starting location in Kenosha County was 42.556342,-88.30533, and the ending location was 42.60061,-88.13524. For plotting purposes, here are a couple mid-point locations of this tornadoe's path: crossing of STH 83 - 42.59297, -88.22230, and the crossing of CTH B - 42.59756, -88.15928. EPISODE NARRATIVE: Very rare, mid-winter, severe storms affected parts of south-central and southeast Wisconsin on January 7th - in the form of two tornadoes and scattered, large, hailstones, and downburst winds. The last time a tornado occurred in January in Wisconsin was on the 24th in 1967 in Green and Rock Counties (25-mile track). On January 7th, a low pressure moved northeast through western Wisconsin, allowing a warm front to push through southern Wisconsin. Temperatures rose into the lower to mid 60s over southeast Wisconsin with surface dewpoints peaking in the mid to upper 50s, resulting in moderate amounts of instablity. Strong, veering winds from the surface to the jet stream level generated sufficient wind shear that supported rotating updrafts in scattered supercell thunderstorms over southeast Wisconsin. A supercell thunderstorm, that had spun up a tornado in northeastern Illinois previously, then crossed the state line into south-central Walworth County (southeast of the city of Walworth) where it intesified and eventually spun up a tornado near Pell Lake that traveled into western Kenosha County. Another supercell spun up a tornado over the northern reaches of the city of Kensoha. Other scattered thunderstorms on this day across south-central and southeast Wisconsin dumped large hail up to 3/4 inch in diameter.


* 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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