Cloverdale Community Schools Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Cloverdale Community Schools is about the same as Indiana average and is much lower than the national average. The risk of tornado damage in Cloverdale Community Schools is lower than Indiana average and is higher than the national average.
Earthquake Index, #46
| Cloverdale Community Schools | 0.09 |
| Indiana | 0.12 |
| 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
| Cloverdale Community Schools | 0.0000 |
| Indiana | 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, #328
| Cloverdale Community Schools | 202.42 |
| Indiana | 265.56 |
| 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 4,388 other weather extremes events within 50 miles of Cloverdale Community Schools were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 4 | Cold: | 18 | Dense Fog: | 12 | Drought: | 8 |
| Dust Storm: | 0 | Flood: | 644 | Hail: | 1,061 | Heat: | 23 | Heavy Snow: | 62 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 26 | Landslide: | 0 | Strong Wind: | 47 |
| Thunderstorm Winds: | 2,151 | Tropical Storm: | 0 | Wildfire: | 0 | Winter Storm: | 97 | Winter Weather: | 31 |
| Other: | 204 | ||||||||
Volcanos Nearby
No volcano is found in or near Cloverdale Community Schools.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Cloverdale Community Schools.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 22.0 | 1984-07-28 | 4 | 10 | 39.22 | -87.07 |
Historical Tornado Events
A total of 91 historical tornado events that had recorded magnitude of 2 or above found in or near Cloverdale Community Schools.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 3.2 | 1961-07-21 | 2 | 39°31'N / 86°48'W | 1.00 Mile | 20 Yards | 0 | 0 | 25K | 0 | Putnam | |
| 8.7 | 1956-04-03 | 2 | 39°25'N / 86°58'W | 0 | 0 | 25K | 0 | Tippecanoe | |||
| 8.7 | 1969-05-10 | 2 | 39°34'N / 86°58'W | 39°38'N / 86°40'W | 16.50 Miles | 400 Yards | 0 | 7 | 250K | 0 | Putnam |
| 10.4 | 1954-06-26 | 2 | 39°31'N / 86°38'W | 0 | 0 | 3K | 0 | Morgan | |||
| 12.2 | 1976-06-24 | 2 | 39°18'N / 86°44'W | 39°20'N / 86°42'W | 2.30 Miles | 100 Yards | 0 | 0 | 250K | 0 | Owen |
| 13.2 | 1992-07-30 | 2 | 39°31'N / 86°39'W | 39°29'N / 86°30'W | 6.00 Miles | 200 Yards | 0 | 0 | 25K | 0 | Morgan |
| 13.5 | 1973-05-27 | 2 | 39°12'N / 87°18'W | 39°39'N / 86°50'W | 39.80 Miles | 50 Yards | 0 | 0 | 250K | 0 | Sullivan |
| 17.0 | 1976-03-20 | 2 | 39°39'N / 86°52'W | 39°47'N / 86°41'W | 13.20 Miles | 200 Yards | 0 | 0 | 25K | 0 | Putnam |
| 17.8 | 1992-11-22 | 3 | 39°15'N / 86°39'W | 39°18'N / 86°34'W | 5.30 Miles | 867 Yards | 0 | 3 | 250K | 0 | Monroe |
| 18.9 | 2002-09-20 | 3 | 39°14'N / 86°37'W | 39°20'N / 86°31'W | 10.50 Miles | 150 Yards | 0 | 0 | 10.0M | 20K | Monroe |
| Brief Description: One of Indiana's longest tracking tornados formed along a squall line on the morning of September 20. The tornado touched down near Ellettsville in Monroe county and then remained on the ground for 112 miles before lifting in Blackford county. The tornado produced F3 damage at its strongest points. Nearly 100 single family homes were destroyed, along with several mobile homes. Some apartments were also destroyed. Many businesses and hundreds of homes received damage. Several counties were declared disaster areas. | |||||||||||
| 19.6 | 1975-04-18 | 2 | 39°13'N / 86°40'W | 39°14'N / 86°37'W | 2.70 Miles | 50 Yards | 0 | 1 | 250K | 0 | Monroe |
| 20.2 | 1975-04-18 | 2 | 39°11'N / 86°42'W | 39°13'N / 86°40'W | 1.90 Miles | 50 Yards | 0 | 1 | 250K | 0 | Owen |
| 20.5 | 1968-05-15 | 2 | 39°37'N / 86°32'W | 39°37'N / 86°26'W | 5.20 Miles | 33 Yards | 0 | 5 | 250K | 0 | Hendricks |
| 20.8 | 1956-02-25 | 2 | 39°26'N / 86°26'W | 2.00 Miles | 60 Yards | 0 | 3 | 25K | 0 | Morgan | |
| 21.6 | 1992-11-22 | 3 | 39°24'N / 86°31'W | 39°35'N / 86°19'W | 15.00 Miles | 867 Yards | 0 | 0 | 2.5M | 0 | Morgan |
| 22.4 | 1992-11-22 | 3 | 39°43'N / 86°54'W | 39°52'N / 86°54'W | 9.00 Miles | 867 Yards | 0 | 1 | 2.5M | 0 | Putnam |
| 22.7 | 1990-06-02 | 2 | 39°47'N / 86°44'W | 39°48'N / 86°42'W | 2.00 Miles | 50 Yards | 1 | 1 | 250K | 0 | Putnam |
| 22.9 | 2002-09-20 | 3 | 39°22'N / 86°32'W | 39°35'N / 86°15'W | 20.00 Miles | 150 Yards | 0 | 28 | 15.0M | 30K | Morgan |
| Brief Description: One of Indiana's longest tracking tornados formed along a squall line on the morning of September 20. The tornado touched down near Ellettsville in Monroe county and then remained on the ground for 112 miles before lifting in Blackford county. The tornado produced F3 damage at its strongest points. Nearly 100 single family homes were destroyed, along with several mobile homes. Some apartments were also destroyed. Many businesses and hundreds of homes received damage. Several counties were declared disaster areas. | |||||||||||
| 23.7 | 1986-03-10 | 3 | 39°22'N / 86°31'W | 39°35'N / 86°14'W | 15.00 Miles | 440 Yards | 0 | 9 | 2.5M | 0 | Morgan |
| 23.8 | 1963-04-29 | 3 | 39°37'N / 87°16'W | 39°39'N / 87°10'W | 5.60 Miles | 100 Yards | 0 | 0 | 250K | 0 | Parke |
| 24.2 | 1973-05-27 | 2 | 39°10'N / 86°36'W | 30.00 Miles | 50 Yards | 0 | 0 | 250K | 0 | Monroe | |
| 24.3 | 1990-06-02 | 2 | 39°48'N / 86°42'W | 39°49'N / 86°40'W | 1.50 Miles | 50 Yards | 0 | 5 | 250K | 0 | Hendricks |
| 24.5 | 1968-05-15 | 2 | 39°37'N / 86°26'W | 39°37'N / 86°22'W | 3.60 Miles | 33 Yards | 0 | 0 | 0K | 0 | Morgan |
| 25.2 | 1970-04-19 | 2 | 39°08'N / 86°39'W | 39°10'N / 86°33'W | 5.60 Miles | 30 Yards | 0 | 6 | 250K | 0 | Monroe |
| 27.4 | 1988-10-17 | 2 | 39°41'N / 86°23'W | 0.50 Mile | 100 Yards | 0 | 0 | 250K | 0 | Hendricks | |
| 27.7 | 1973-06-26 | 2 | 39°10'N / 86°33'W | 39°14'N / 86°20'W | 12.40 Miles | 50 Yards | 0 | 0 | 250K | 0 | Monroe |
| 28.0 | 1954-07-20 | 2 | 39°43'N / 86°24'W | 0 | 0 | 25K | 0 | Hendricks | |||
| 28.0 | 1976-03-20 | 2 | 39°47'N / 86°41'W | 39°54'N / 86°31'W | 11.70 Miles | 33 Yards | 0 | 0 | 25K | 0 | Hendricks |
| 28.5 | 1960-06-22 | 3 | 39°32'N / 87°21'W | 0 | 0 | 250K | 0 | Vigo | |||
| 28.7 | 1990-06-02 | 2 | 39°03'N / 87°07'W | 39°07'N / 86°54'W | 10.00 Miles | 50 Yards | 0 | 0 | 2.5M | 0 | Greene |
| 29.1 | 1992-11-22 | 3 | 39°52'N / 86°54'W | 39°55'N / 86°53'W | 3.00 Miles | 867 Yards | 0 | 0 | 2.5M | 0 | Montgomery |
| 29.4 | 1973-05-27 | 2 | 39°12'N / 86°27'W | 39°37'N / 86°06'W | 34.30 Miles | 50 Yards | 0 | 0 | 250K | 0 | Monroe |
| 29.6 | 1973-05-27 | 2 | 39°39'N / 86°50'W | 40°06'N / 86°25'W | 38.10 Miles | 50 Yards | 0 | 0 | 250K | 0 | Hendricks |
| 29.8 | 1962-05-26 | 2 | 39°32'N / 86°16'W | 0 | 0 | 25K | 0 | Morgan | |||
| 30.8 | 1965-01-23 | 2 | 39°49'N / 86°27'W | 0 | 0 | 3K | 0 | Hendricks | |||
| 31.8 | 1967-10-24 | 2 | 39°28'N / 87°25'W | 0 | 0 | 3K | 0 | Vigo | |||
| 33.3 | 1961-08-19 | 2 | 39°56'N / 86°38'W | 0 | 0 | 25K | 0 | Boone | |||
| 33.5 | 1969-09-05 | 2 | 39°14'N / 87°22'W | 0 | 0 | 25K | 0 | Sullivan | |||
| 34.4 | 1967-10-24 | 2 | 39°35'N / 87°27'W | 0 | 1 | 3K | 0 | Vigo | |||
| 34.9 | 1995-05-13 | 2 | 39°59'N / 86°54'W | 39°58'N / 86°34'W | 9.00 Miles | 250 Yards | 3 | 5 | 3.5M | 0 | Montgomery |
| Brief Description: The tornado touched down near Ladoga Road and County Road 400S damaging a home. The tornado continued east near Linnsburg and New Ross destroying eight homes and damaging eight others. Two businesses were destroyed and an elementary school received major damage. The fatalities occurred in prefabricated homes of rural Montgomery County, just west and south of Linnsburg. The tornado exited the county near Interstate 74 and County Road 400S at 0008 EST. (M42P, F36P, M94P) | |||||||||||
| 35.0 | 1956-02-25 | 2 | 39°31'N / 86°10'W | 0 | 0 | 250K | 0 | Johnson | |||
| 35.1 | 1978-06-25 | 3 | 39°45'N / 86°16'W | 1.00 Mile | 100 Yards | 0 | 0 | 0K | 0 | Marion | |
| 35.6 | 2002-09-20 | 3 | 39°32'N / 86°13'W | 39°38'N / 86°07'W | 7.50 Miles | 150 Yards | 0 | 0 | 25.0M | 10K | Johnson |
| Brief Description: One of Indiana's longest tracking tornados formed along a squall line on the morning of September 20. The tornado touched down near Ellettsville in Monroe county and then remained on the ground for 112 miles before lifting in Blackford county. The tornado produced F3 damage at its strongest points. Nearly 100 single family homes were destroyed, along with several mobile homes. Some apartments were also destroyed. Many businesses and hundreds of homes received damage. Several counties were declared disaster areas. | |||||||||||
| 35.8 | 1963-04-29 | 3 | 39°02'N / 87°28'W | 39°07'N / 87°02'W | 23.90 Miles | 50 Yards | 0 | 0 | 250K | 0 | Sullivan |
| 36.9 | 1980-06-02 | 3 | 40°05'N / 87°04'W | 39°55'N / 86°48'W | 18.10 Miles | 33 Yards | 1 | 16 | 2.5M | 0 | Montgomery |
| 37.0 | 1988-10-17 | 2 | 39°38'N / 87°30'W | 39°38'N / 87°28'W | 2.00 Miles | 200 Yards | 0 | 2 | 250K | 0 | Vermillion |
| 37.0 | 1957-06-11 | 2 | 39°06'N / 87°19'W | 0.20 Mile | 70 Yards | 0 | 0 | 25K | 0 | Sullivan | |
| 37.8 | 1958-05-03 | 2 | 39°34'N / 87°32'W | 39°36'N / 87°30'W | 1.90 Miles | 200 Yards | 0 | 0 | 25K | 0 | Vigo |
| 37.9 | 1988-10-17 | 2 | 39°36'N / 87°31'W | 39°38'N / 87°30'W | 1.50 Miles | 200 Yards | 0 | 2 | 250K | 0 | Vigo |
| 38.5 | 1959-02-10 | 2 | 39°41'N / 86°09'W | 0.40 Mile | 50 Yards | 0 | 0 | 25K | 0 | Marion | |
| 38.7 | 1965-04-11 | 4 | 40°01'N / 86°52'W | 40°03'N / 86°42'W | 8.90 Miles | 667 Yards | 2 | 13 | 25.0M | 0 | Montgomery |
| 39.2 | 1990-06-02 | 2 | 40°00'N / 86°54'W | 40°05'N / 86°46'W | 10.00 Miles | 100 Yards | 0 | 12 | 2.5M | 0 | Montgomery |
| 39.3 | 1954-10-11 | 3 | 39°27'N / 86°07'W | 39°30'N / 86°03'W | 4.70 Miles | 100 Yards | 2 | 0 | 250K | 0 | Johnson |
| 39.4 | 2008-06-03 | 2 | 39°19'N / 86°08'W | 39°20'N / 86°05'W | 3.00 Miles | 150 Yards | 0 | 0 | 200K | 0K | Brown |
| Brief Description: EVENT NARRATIVE: In Brown County near Peoga damaged occurred to twenty to thirty homes, a barn, powerlines, trees, and a carport due to a tornado. One indirect injury occurred when I firefighter suffered heat stroke. In Johnson County at Camp Atterbury forty buildings were damaged, dozens of vehicles including a 6,000 pound Humvee and a bus were tossed and crushed, the chapel was damaged, and a trailer was tossed on top of a building. Also in Johnson County in Edinburgh 59 buildings were damaged or destroyed. One woman suffered an ankle injury during the tornado. Damaged occurred in Shelby County to a gas station. One woman at the gas station sustained minor injuries when her car windows were blown out. The tornado touched down at 2024 EST in Brown County near the intersection of Sweetwater Trail and Beech Tree Road. The tornado tracked to the northeast for 2.83 miles before crossing into Johnson County approximately 1000 feet west of County Road 900 at 2030 EST. The tornado continued to track to the northeast for 7.19 miles until 2046 EST when the tornado entered Shelby County just south of the County Road 900 and West State Road 252 intersection. The tornado lifted at 2047 EST in Shelby County after tracking to the northeast and lifting at exit 80 on Interstate 65. The tornado was an EF-2 while in Brown County causing 200 thousand dollars in damage. The tornado was an EF-2 while in Johnson County causing 23 million dollars in damage. The tornado weakened to an EF-1 while in Shelby County causing 15 thousand dollars in damage. Based on damage indicators, at the tornadoes peak intensity wind speeds were around 130 miles per hour. The tornado formed from a supercell and was on the ground for 23 minutes or 10.59 miles. EPISODE NARRATIVE: A powerful weather system moved through central Indiana on the night of June 3rd. Associated with this system were damaging straight line thunderstorm winds and tornadoes. Three tornadoes developed from supercells. An EF-1 tornado moved through Decatur County, an EF-2 tornado moved through Brown and Johnson Counties, and then weakened to an EF-1 in Shelby County, and another tornado began as an EF-0 in Shelby County and intensified to an EF-3 in Rush County. | |||||||||||
| 39.5 | 1986-03-10 | 3 | 39°35'N / 86°14'W | 39°41'N / 85°59'W | 15.00 Miles | 440 Yards | 0 | 3 | 2.5M | 0 | Johnson |
| 39.7 | 1957-04-05 | 2 | 38°59'N / 86°26'W | 0 | 0 | 3K | 0 | Lawrence | |||
| 39.7 | 1990-06-02 | 2 | 39°46'N / 87°31'W | 39°48'N / 87°23'W | 6.50 Miles | 150 Yards | 0 | 0 | 250K | 0 | Vermillion |
| 39.8 | 1958-06-13 | 2 | 40°03'N / 86°50'W | 0 | 0 | 25K | 0 | Montgomery | |||
| 39.8 | 1990-06-02 | 2 | 39°43'N / 87°31'W | 39°46'N / 87°27'W | 4.00 Miles | 100 Yards | 0 | 6 | 250K | 0 | Vermillion |
| 39.9 | 1969-08-09 | 3 | 39°49'N / 86°13'W | 0.10 Mile | 167 Yards | 0 | 6 | 250K | 0 | Marion | |
| 40.0 | 1966-12-08 | 2 | 40°03'N / 86°54'W | 0 | 0 | 25K | 0 | Montgomery | |||
| 40.2 | 1955-11-15 | 2 | 39°46'N / 86°10'W | 0 | 2 | 25K | 0 | Marion | |||
| 41.5 | 1958-05-03 | 2 | 39°33'N / 87°39'W | 39°34'N / 87°32'W | 5.90 Miles | 33 Yards | 0 | 0 | 0K | 0 | Edgar |
| 41.6 | 1980-06-02 | 2 | 39°47'N / 86°09'W | 0 | 6 | 0K | 0 | Marion | |||
| 41.9 | 1992-07-30 | 3 | 39°22'N / 86°08'W | 39°21'N / 85°58'W | 7.00 Miles | 200 Yards | 0 | 25 | 2.5M | 0 | Johnson |
| 42.2 | 1957-07-12 | 2 | 40°04'N / 86°38'W | 0 | 0 | 25K | 0 | Boone | |||
| 42.3 | 1990-06-02 | 2 | 39°43'N / 87°35'W | 39°43'N / 87°31'W | 4.00 Miles | 100 Yards | 0 | 0 | 0K | 0 | Edgar |
| 43.1 | 2006-03-31 | 2 | 39°37'N / 86°06'W | 39°37'N / 85°58'W | 7.00 Miles | 350 Yards | 0 | 0 | 3.0M | 0 | Johnson |
| Brief Description: A tornado touched down just west of Interstate 65 and Main Street in Greenwood on the evening of 31 March 2006. This tornado was on the ground for 25 minutes, covered an area 17 miles long, and caused significant damage to several homes and businesses along its path, which continued into neighboring Shelby County. At its peak, near the small town of London in Shelby County, the tornado was a strong F2, with a width of four tenths of a mile. The tornado lifted near US 52 and State Road 9 in north central Shelby County. According to the American Red Cross of Greater Indianapolis, more than 140 homes were damaged, some of them severely. Fortunately, no fatalities or life-threatening injuries were reported, although at least one driver, Megan Mahoney of Chesterfield, MO, sustained a concussion when her car was rolled or tossed off of Interstate 74 in Shelby County and into the yard of a home over 150 feet away. This was the third significant tornado in just over three and a half years to affect the southern suburbs of the Indianapolis metropolitan area. Severe thunderstorms which formed over northwest central Indiana quickly transitioned to a powerful and expanding squall line with embedded supercells that moved southeast through central Indiana during the afternoon and evening of 31 March 2006. Two tornadoes touched down in the 9-county Indianapolis metropolitan area, one of which was on the ground for 17 miles and did an estimated 8 million dollars in damage. | |||||||||||
| 43.3 | 1963-04-22 | 3 | 39°48'N / 87°32'W | 39°48'N / 87°30'W | 0 | 0 | 0K | 0 | Vermillion | ||
| 43.7 | 1986-05-15 | 2 | 39°32'N / 87°42'W | 39°35'N / 87°34'W | 5.00 Miles | 33 Yards | 0 | 0 | 0K | 0 | Edgar |
| 43.8 | 2008-06-03 | 2 | 39°20'N / 86°05'W | 39°21'N / 85°57'W | 7.00 Miles | 150 Yards | 0 | 3 | 23.0M | 0K | Johnson |
| Brief Description: EVENT NARRATIVE: In Brown County near Peoga damaged occurred to twenty to thirty homes, a barn, powerlines, trees, and a carport due to a tornado. One indirect injury occurred when I firefighter suffered heat stroke. In Johnson County at Camp Atterbury forty buildings were damaged, dozens of vehicles including a 6,000 pound Humvee and a bus were tossed and crushed, the chapel was damaged, and a trailer was tossed on top of a building. Also in Johnson County in Edinburgh 59 buildings were damaged or destroyed. One woman suffered an ankle injury during the tornado. Damaged occurred in Shelby County to a gas station. One woman at the gas station sustained minor injuries when her car windows were blown out. The tornado touched down at 2024 EST in Brown County near the intersection of Sweetwater Trail and Beech Tree Road. The tornado tracked to the northeast for 2.83 miles before crossing into Johnson County approximately 1000 feet west of County Road 900 at 2030 EST. The tornado continued to track to the northeast for 7.19 miles until 2046 EST when the tornado entered Shelby County just south of the County Road 900 and West State Road 252 intersection. The tornado lifted at 2047 EST in Shelby County after tracking to the northeast and lifting at exit 80 on Interstate 65. The tornado was an EF-2 while in Brown County causing 200 thousand dollars in damage. The tornado was an EF-2 while in Johnson County causing 23 million dollars in damage. The tornado weakened to an EF-1 while in Shelby County causing 15 thousand dollars in damage. Based on damage indicators, at the tornadoes peak intensity wind speeds were around 130 miles per hour. The tornado formed from a supercell and was on the ground for 23 minutes or 10.59 miles. EPISODE NARRATIVE: A powerful weather system moved through central Indiana on the night of June 3rd. Associated with this system were damaging straight line thunderstorm winds and tornadoes. Three tornadoes developed from supercells. An EF-1 tornado moved through Decatur County, an EF-2 tornado moved through Brown and Johnson Counties, and then weakened to an EF-1 in Shelby County, and another tornado began as an EF-0 in Shelby County and intensified to an EF-3 in Rush County. | |||||||||||
| 44.0 | 1956-02-25 | 2 | 40°03'N / 86°28'W | 1.00 Mile | 70 Yards | 0 | 0 | 25K | 0 | Boone | |
| 44.0 | 1965-08-25 | 2 | 40°03'N / 86°28'W | 0.80 Mile | 100 Yards | 0 | 0 | 250K | 0 | Boone | |
| 44.8 | 2009-03-08 | 3 | 38°51'N / 86°36'W | 38°51'N / 86°35'W | 1.00 Mile | 1408 Yards | 0 | 1 | 420K | 0K | Lawrence |
| Brief Description: EVENT NARRATIVE: This brief but powerful tornado had a steady track to the east-northeast, creating damage consistent of an EF3 strength tornado. A rating of EF3 corresponds with winds of 136 to 165 MPH. The maximum width of the tornado was approximately 1/8 mile. It completely destroyed the above ground portions of two homes, seriously damaged a trailer home, and created lesser damage to two other homes. It picked a full size school bus up, turned it around and onto its side, and moved it uphill onto the foundation of what had been an occupied home. The damage estimate is very rough. EPISODE NARRATIVE: By late morning a warm front stretched approximately from low pressure over northeast Missouri through central Illinois to between Indianapolis and Fort Wayne, Indiana while the cold front trailed from the low into Oklahoma. At 1040 EST tornado watch number 49 was issued for much of western Indiana, much of Illinois, and locations south, effective until 1600 EST. National Weather Service radar showed scattered storms in the watch area in Indiana, better organized storms firing up over eastern Iowa and western Illinois, and an area of rain north of the warm front. At 1400 EST radar showed a broken line of storms with isolated supercells and line segments extending from northern Indiana south-southwestward through southern Indiana into western Kentucky with an eastward movement at 40-45 knots along central and northern portions of the line. The thermodynamic environment was marginally unstable but becoming more unstable with time. Supporting factors for severe weather were: large-scale atmospheric ascent, forcing associated with an ejecting short wave trough, significant shear, and increasing sunshine along and behind the warm front as it lifted north. At 1343 EST the first severe weather report occurred with a measured thunderstorm wind gust of 91 MPH in Vincennes in Knox county. An additional tornado watch, watch number 50, was issued at 1355 EST to cover the rest of Indiana east of watch number 49. At this point 90+ knot mid-level winds and 55+ knot 850 millibar winds were across the region. Portions of the watches were canceled starting shortly before 1600 EST. By the end of the severe weather episode an EF3 tornado had touched down in Lawrence County just west of Bedford. Portions of Daviess county experienced wind gusts of 80 to 90 MPH, while Tippecanoe, Clinton and Howard Counties had gusts from 60 to 70 mph. Significant damage occurred to several homes and farms in Lawrence County. | |||||||||||
| 45.6 | 1971-03-15 | 2 | 40°06'N / 86°33'W | 0.10 Mile | 20 Yards | 0 | 2 | 25K | 0 | Boone | |
| 46.0 | 1990-06-02 | 2 | 39°42'N / 87°43'W | 39°46'N / 87°31'W | 11.00 Miles | 150 Yards | 0 | 0 | 25K | 0 | Edgar |
| 46.4 | 1965-11-26 | 3 | 39°59'N / 86°20'W | 40°02'N / 86°15'W | 5.10 Miles | 527 Yards | 0 | 0 | 250K | 0 | Boone |
| 46.8 | 1961-03-06 | 2 | 40°08'N / 86°37'W | 0 | 2 | 25K | 0 | Boone | |||
| 46.8 | 1973-06-17 | 2 | 39°23'N / 85°57'W | 0.30 Mile | 50 Yards | 0 | 0 | 25K | 0 | Bartholomew | |
| 46.9 | 2002-09-20 | 2 | 39°38'N / 86°07'W | 39°54'N / 85°56'W | 17.50 Miles | 150 Yards | 0 | 97 | 40.0M | 0 | Marion |
| Brief Description: One of Indiana's longest tracking tornados formed along a squall line on the morning of September 20. The tornado touched down near Ellettsville in Monroe county and then remained on the ground for 112 miles before lifting in Blackford county. The tornado produced F3 damage at its strongest points. Nearly 100 single family homes were destroyed, along with several mobile homes. Some apartments were also destroyed. Many businesses and hundreds of homes received damage. Several counties were declared disaster areas. | |||||||||||
| 47.0 | 1965-04-11 | 4 | 40°03'N / 86°42'W | 40°09'N / 86°15'W | 24.70 Miles | 1667 Yards | 20 | 80 | 25.0M | 0 | Boone |
| 47.5 | 1974-04-03 | 2 | 40°02'N / 86°18'W | 0.10 Mile | 50 Yards | 0 | 0 | 0K | 0 | Boone | |
| 47.7 | 1962-03-11 | 3 | 40°05'N / 86°29'W | 40°08'N / 86°27'W | 3.00 Miles | 10 Yards | 0 | 0 | 25K | 0 | Boone |
| 47.7 | 1990-06-02 | 4 | 38°47'N / 86°32'W | 38°54'N / 86°23'W | 11.00 Miles | 400 Yards | 1 | 51 | 2.5M | 0 | Lawrence |
| 47.7 | 1955-03-01 | 2 | 38°50'N / 86°29'W | 1.50 Miles | 300 Yards | 0 | 0 | 25K | 0 | Lawrence | |
| 48.0 | 1986-03-10 | 3 | 39°41'N / 85°59'W | 39°40'N / 85°56'W | 2.00 Miles | 440 Yards | 0 | 10 | 2.5M | 0 | Marion |
| 48.3 | 1972-05-14 | 4 | 39°46'N / 86°05'W | 39°50'N / 85°57'W | 8.40 Miles | 200 Yards | 0 | 17 | 250K | 0 | Marion |
| 48.7 | 1956-02-25 | 2 | 38°47'N / 87°15'W | 38°50'N / 87°00'W | 13.80 Miles | 900 Yards | 0 | 0 | 25K | 0 | Daviess |
| 49.3 | 1963-04-22 | 3 | 39°51'N / 86°02'W | 0.30 Mile | 200 Yards | 0 | 20 | 2.5M | 0 | Marion | |
| 49.6 | 1974-06-07 | 2 | 39°57'N / 86°13'W | 39°59'N / 86°04'W | 8.00 Miles | 100 Yards | 0 | 0 | 250K | 0 | Hamilton |
| 50.0 | 1971-05-24 | 2 | 39°12'N / 85°58'W | 39°13'N / 85°56'W | 0 | 0 | 2.5M | 0 | Bartholomew | ||
* 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.