Avon, CT Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Avon is lower than Connecticut average and is lower than the national average. The risk of tornado damage in Avon is higher than Connecticut average and is lower than the national average.
Earthquake Index, #129
| Avon, CT | 0.43 |
| Connecticut | 0.94 |
| 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
| Avon, CT | 0.0000 |
| Connecticut | 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, #81
| Avon, CT | 121.30 |
| Connecticut | 100.22 |
| 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 3,716 other weather extremes events within 50 miles of Avon, CT 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: | 2 | Cold: | 10 | Dense Fog: | 0 | Drought: | 0 |
| Dust Storm: | 0 | Flood: | 419 | Hail: | 807 | Heat: | 27 | Heavy Snow: | 53 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 5 | Landslide: | 0 | Strong Wind: | 83 |
| Thunderstorm Winds: | 1,916 | Tropical Storm: | 0 | Wildfire: | 0 | Winter Storm: | 18 | Winter Weather: | 4 |
| Other: | 372 | ||||||||
Volcanos Nearby
No volcano is found in or near Avon, CT.
Historical Earthquake Events
A total of 2 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Avon, CT.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 48.2 | 1981-11-21 | 3.8 | 6 | 41.13 | -72.56 |
| 48.2 | 1981-10-21 | 3.5 | 6 | 41.13 | -72.56 |
Historical Tornado Events
A total of 40 historical tornado events that had recorded magnitude of 2 or above found in or near Avon, CT.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 7.2 | 1984-07-05 | 2 | 41°40'N / 72°57'W | 41°43'N / 72°50'W | 3.00 Miles | 200 Yards | 0 | 0 | 0K | 0 | Hartford |
| 7.4 | 1973-08-31 | 2 | 41°44'N / 72°44'W | 0 | 0 | 25K | 0 | Hartford | |||
| 9.8 | 1951-08-21 | 2 | 41°37'N / 73°25'W | 41°48'N / 72°36'W | 43.90 Miles | 100 Yards | 0 | 9 | 250K | 0 | Litchfield |
| 11.9 | 1962-06-18 | 2 | 41°46'N / 73°05'W | 0.10 Mile | 67 Yards | 0 | 0 | 25K | 0 | Litchfield | |
| 13.4 | 1973-09-18 | 2 | 41°36'N / 72°54'W | 0 | 0 | 0K | 0 | New Haven | |||
| 13.5 | 2001-06-23 | 2 | 41°48'N / 73°07'W | 41°48'N / 73°07'W | 0.50 Mile | 200 Yards | 0 | 0 | 250K | 0 | Litchfield |
| Brief Description: A warm front, moving into Connecticut, produced a line of showers and isolated thunderstorms during the early afternoon of June 23. One cell developed into a supercell which then spawned two tornados in Litchfield County. The first tornado touched down in the northern end of the town of Washington, on a golf course near Lake Waramaug, cutting a path 50 yards wide and a mile in length. It hit during a lull of a golf tornament that was going on there, damaging the fourth hole of the course as well as destroying a metal fence around a tennis court. This tornado also demolished a storage building. This was ranked as an F1 Tornado, with winds estimated between 75 and 100 mph, by National Weather Service Personnel. The tornado also took out many trees around this area. The tornado lifted back up, but then reformed from the cell as the storm moved into the cities of Torrington and Winstead. This second tornado was ranked on the Fujita scale as an F2 with winds estimated between 100 and 130 mph. It touched down near the Torrington Middle School, over the Midget Football Field cutting a swath two hundred yards wide and a half a mile in length. The tornado destroyed an 8,000 dollar shed that had recently been completed by the Midget Football League. The second twister also demolished the bleachers and part of a roof at the Torrington Middle school. In addition, hundreds of large trees were uprooted. Powerlines were also destroyed. One person was injured when a portion of the blown off roof fell on him, resulting in bone fractures. | |||||||||||
| 14.5 | 1954-05-10 | 2 | 42°00'N / 72°53'W | 0.80 Mile | 17 Yards | 0 | 0 | 3K | 0 | Hartford | |
| 14.6 | 1962-05-24 | 3 | 41°34'N / 72°56'W | 41°36'N / 72°53'W | 2.30 Miles | 120 Yards | 0 | 5 | 2.5M | 0 | Hartford |
| 15.0 | 1979-10-03 | 4 | 41°53'N / 72°40'W | 42°03'N / 72°42'W | 11.30 Miles | 1400 Yards | 3 | 500 | 250.0M | 0 | Hartford |
| 18.1 | 1973-06-12 | 2 | 41°37'N / 73°07'W | 1.50 Miles | 23 Yards | 0 | 0 | 0K | 0 | Litchfield | |
| 18.4 | 1962-05-24 | 3 | 41°33'N / 73°07'W | 41°34'N / 72°56'W | 9.30 Miles | 120 Yards | 1 | 45 | 2.5M | 0 | New Haven |
| 18.7 | 1973-09-06 | 2 | 41°48'N / 72°32'W | 41°49'N / 72°27'W | 3.30 Miles | 33 Yards | 0 | 0 | 2.5M | 0 | Hartford |
| 19.2 | 1989-07-10 | 2 | 41°36'N / 73°07'W | 41°34'N / 73°05'W | 2.00 Miles | 100 Yards | 0 | 20 | 25.0M | 0 | Litchfield |
| 19.2 | 1989-07-10 | 2 | 41°34'N / 73°05'W | 41°33'N / 73°02'W | 3.00 Miles | 100 Yards | 0 | 50 | 25.0M | 0 | New Haven |
| 19.5 | 1971-07-29 | 3 | 41°33'N / 73°03'W | 0 | 2 | 250K | 0 | New Haven | |||
| 20.3 | 1976-06-30 | 2 | 42°00'N / 73°08'W | 1.00 Mile | 100 Yards | 0 | 0 | 25K | 0 | Litchfield | |
| 21.5 | 1950-07-12 | 2 | 41°34'N / 72°34'W | 10.00 Miles | 33 Yards | 0 | 0 | 3K | 0 | Middlesex | |
| 21.7 | 1954-05-10 | 3 | 41°55'N / 72°28'W | 0.30 Mile | 33 Yards | 0 | 2 | 25K | 0 | Tolland | |
| 22.1 | 1989-07-10 | 2 | 41°50'N / 73°20'W | 41°43'N / 73°14'W | 10.00 Miles | 73 Yards | 0 | 4 | 25.0M | 0 | Litchfield |
| 22.5 | 1955-10-24 | 2 | 41°30'N / 73°03'W | 0.50 Mile | 200 Yards | 0 | 0 | 3K | 0 | New Haven | |
| 23.3 | 1951-08-21 | 3 | 41°35'N / 72°30'W | 0 | 8 | 250K | 0 | Middlesex | |||
| 23.4 | 1975-07-24 | 2 | 42°06'N / 72°40'W | 0.30 Mile | 33 Yards | 0 | 0 | 25K | 0 | Hampden | |
| 25.0 | 1966-08-11 | 2 | 42°03'N / 73°14'W | 42°06'N / 73°05'W | 8.00 Miles | 33 Yards | 0 | 0 | 25K | 0 | Berkshire |
| 25.8 | 1965-08-19 | 2 | 41°58'N / 72°28'W | 41°56'N / 72°20'W | 6.60 Miles | 120 Yards | 0 | 0 | 25K | 0 | Tolland |
| 27.3 | 1966-08-11 | 2 | 42°02'N / 73°18'W | 42°03'N / 73°14'W | 2.70 Miles | 100 Yards | 0 | 0 | 25K | 0 | Litchfield |
| 29.5 | 1958-09-07 | 2 | 41°54'N / 72°18'W | 1.30 Miles | 100 Yards | 0 | 2 | 250K | 0 | Tolland | |
| 30.6 | 1989-07-10 | 4 | 41°23'N / 72°54'W | 41°19'N / 72°55'W | 3.00 Miles | 100 Yards | 0 | 40 | 250.0M | 0 | New Haven |
| 31.5 | 1959-05-12 | 2 | 42°00'N / 73°24'W | 0.50 Mile | 100 Yards | 0 | 0 | 3K | 0 | Litchfield | |
| 31.5 | 1951-08-20 | 2 | 41°52'N / 72°15'W | 0 | 0 | 25K | 0 | Tolland | |||
| 32.1 | 1997-07-03 | 2 | 42°11'N / 73°10'W | 42°14'N / 73°06'W | 3.70 Miles | 600 Yards | 0 | 0 | 1.5M | 0 | Berkshire |
| Brief Description: On July 3, a fast moving cold front crossed Berkshire County during the afternoon and evening hours. The front initiated four tornadoes. The Richmond F1 tornado is a continuation of the F2 tornado which occurred in Columbia County. This tornado downed trees and produced minor damage to one house as it diminished in the Richmond area. The tornado in the Town of Florida began at the intersection of South County Road and Savoy Road. The F1 tornado tracked eastward and terminated just south of Florida near state route 2. The tornado removed all the shingles off the roof of a residence and a prefabricated steeple was blown off a church. Many trees were also downed along its path. The F2 tornado which began in the Monterey area started at the intersection of Wellman Road and New Marlborough Road. The tornado tracked northeast across state route 23 and Lake Garfield to Hayes Pond where it merged with the second tornado. At the north end of Hayes Pond the tornado diminished. This tornado downed hundreds of trees, damaged ten to twenty homes and destroyed two vehicles. The damage was most extensive along the north shore of Lake Garfield at Elephant Rock Road, Hopi Road, Mt. Hunger Road and Norwalk Acres Road. The second F2 tornado began near the intersection of Tyringham Road and West Center Road. It then tracked across Hayes Pond where it momentarily merged with the other tornado. The tornado then proceeded northeast where it ended near the intersection of state route 8 and Merrit Road. This tornado produced extensive tree damage, destroyed one vehicle and damaged fifteen to twenty homes. The most extensive damage occurred along West Center Road near Hayes Pond. Baseball size hail was also observed at Hayes Pond with this storm. Two people were struck by lightning at the Great Barrington Fairgrouds. They were both hospitalized and released. | |||||||||||
| 32.4 | 1997-07-03 | 2 | 42°10'N / 73°13'W | 42°13'N / 73°09'W | 4.50 Miles | 600 Yards | 0 | 0 | 1.5M | 0 | Berkshire |
| Brief Description: On July 3, a fast moving cold front crossed Berkshire County during the afternoon and evening hours. The front initiated four tornadoes. The Richmond F1 tornado is a continuation of the F2 tornado which occurred in Columbia County. This tornado downed trees and produced minor damage to one house as it diminished in the Richmond area. The tornado in the Town of Florida began at the intersection of South County Road and Savoy Road. The F1 tornado tracked eastward and terminated just south of Florida near state route 2. The tornado removed all the shingles off the roof of a residence and a prefabricated steeple was blown off a church. Many trees were also downed along its path. The F2 tornado which began in the Monterey area started at the intersection of Wellman Road and New Marlborough Road. The tornado tracked northeast across state route 23 and Lake Garfield to Hayes Pond where it merged with the second tornado. At the north end of Hayes Pond the tornado diminished. This tornado downed hundreds of trees, damaged ten to twenty homes and destroyed two vehicles. The damage was most extensive along the north shore of Lake Garfield at Elephant Rock Road, Hopi Road, Mt. Hunger Road and Norwalk Acres Road. The second F2 tornado began near the intersection of Tyringham Road and West Center Road. It then tracked across Hayes Pond where it momentarily merged with the other tornado. The tornado then proceeded northeast where it ended near the intersection of state route 8 and Merrit Road. This tornado produced extensive tree damage, destroyed one vehicle and damaged fifteen to twenty homes. The most extensive damage occurred along West Center Road near Hayes Pond. Baseball size hail was also observed at Hayes Pond with this storm. Two people were struck by lightning at the Great Barrington Fairgrouds. They were both hospitalized and released. | |||||||||||
| 33.3 | 1966-08-11 | 2 | 42°12'N / 72°38'W | 42°16'N / 72°33'W | 5.60 Miles | 67 Yards | 0 | 0 | 250K | 0 | Hampden |
| 33.8 | 1955-07-12 | 2 | 42°06'N / 73°22'W | 0.50 Mile | 33 Yards | 0 | 0 | 0K | 0 | Berkshire | |
| 38.0 | 1958-08-14 | 2 | 42°19'N / 72°38'W | 1.00 Mile | 67 Yards | 0 | 0 | 250K | 0 | Hampshire | |
| 38.6 | 1971-09-13 | 3 | 42°20'N / 72°40'W | 0.50 Mile | 7 Yards | 0 | 0 | 25K | 0 | Hampshire | |
| 39.6 | 1961-07-21 | 2 | 42°22'N / 72°38'W | 42°18'N / 72°34'W | 4.90 Miles | 167 Yards | 0 | 0 | 25K | 0 | Hampshire |
| 44.8 | 1963-05-20 | 2 | 42°24'N / 72°36'W | 42°25'N / 72°34'W | 0 | 0 | 25K | 0 | Franklin | ||
| 45.8 | 1973-08-28 | 4 | 42°22'N / 73°25'W | 42°16'N / 73°23'W | 6.40 Miles | 313 Yards | 4 | 36 | 25.0M | 0 | Berkshire |
| 46.7 | 1955-07-05 | 2 | 42°26'N / 72°34'W | 0 | 0 | 3K | 0 | Franklin | |||
| 49.3 | 1950-07-14 | 2 | 41°16'N / 73°30'W | 5.00 Miles | 100 Yards | 0 | 3 | 250K | 0 | Fairfield | |
* 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.