Andover, CT Natural Disasters and Weather Extremes
The chance of earthquake damage in Andover is lower than Connecticut average and is lower than the national average. The risk of tornado damage in Andover is about the same as Connecticut average and is lower than the national average.
Earthquake Index, #81
| Andover, CT | 0.68 |
| 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
| Andover, 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, #152
| Andover, CT | 100.31 |
| 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 3,186 other weather extremes events within 50 miles of Andover, 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: | 389 | Hail: | 698 | Heat: | 27 | Heavy Snow: | 52 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 5 | Landslide: | 0 | Strong Wind: | 80 |
| Thunderstorm Winds: | 1,490 | Tropical Storm: | 0 | Wildfire: | 0 | Winter Storm: | 18 | Winter Weather: | 4 |
| Other: | 411 | ||||||||
Volcanos Nearby
No volcano is found in or near Andover, CT.
Historical Earthquake Events
A total of 2 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Andover, CT.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 42.7 | 1981-11-21 | 3.8 | 6 | 41.13 | -72.56 |
| 42.7 | 1981-10-21 | 3.5 | 6 | 41.13 | -72.56 |
Historical Tornado Events
A total of 38 historical tornado events that had recorded magnitude of 2 or above found in or near Andover, CT.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 8.0 | 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 |
| 11.3 | 1951-08-20 | 2 | 41°52'N / 72°15'W | 0 | 0 | 25K | 0 | Tolland | |||
| 12.1 | 1951-08-21 | 3 | 41°35'N / 72°30'W | 0 | 8 | 250K | 0 | Middlesex | |||
| 12.2 | 1958-09-07 | 2 | 41°54'N / 72°18'W | 1.30 Miles | 100 Yards | 0 | 2 | 250K | 0 | Tolland | |
| 13.6 | 1954-05-10 | 3 | 41°55'N / 72°28'W | 0.30 Mile | 33 Yards | 0 | 2 | 25K | 0 | Tolland | |
| 15.1 | 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 |
| 15.1 | 1950-07-12 | 2 | 41°34'N / 72°34'W | 10.00 Miles | 33 Yards | 0 | 0 | 3K | 0 | Middlesex | |
| 18.5 | 1973-08-31 | 2 | 41°44'N / 72°44'W | 0 | 0 | 25K | 0 | Hartford | |||
| 22.7 | 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 |
| 26.8 | 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 |
| 28.6 | 1973-09-18 | 2 | 41°36'N / 72°54'W | 0 | 0 | 0K | 0 | New Haven | |||
| 29.4 | 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 |
| 29.5 | 1975-07-24 | 2 | 42°06'N / 72°40'W | 0.30 Mile | 33 Yards | 0 | 0 | 25K | 0 | Hampden | |
| 32.1 | 1954-05-10 | 2 | 42°00'N / 72°53'W | 0.80 Mile | 17 Yards | 0 | 0 | 3K | 0 | Hartford | |
| 32.7 | 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 |
| 34.5 | 1962-10-12 | 2 | 42°08'N / 71°58'W | 42°05'N / 71°54'W | 4.10 Miles | 133 Yards | 0 | 0 | 25K | 0 | Worcester |
| 35.7 | 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 |
| 36.4 | 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 |
| 36.6 | 1962-06-18 | 2 | 41°46'N / 73°05'W | 0.10 Mile | 67 Yards | 0 | 0 | 25K | 0 | Litchfield | |
| 37.1 | 1971-07-29 | 3 | 41°33'N / 73°03'W | 0 | 2 | 250K | 0 | New Haven | |||
| 37.3 | 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 |
| 38.2 | 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 |
| 38.4 | 1955-10-24 | 2 | 41°30'N / 73°03'W | 0.50 Mile | 200 Yards | 0 | 0 | 3K | 0 | New Haven | |
| 38.5 | 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. | |||||||||||
| 38.8 | 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 |
| 39.1 | 1973-06-12 | 2 | 41°37'N / 73°07'W | 1.50 Miles | 23 Yards | 0 | 0 | 0K | 0 | Litchfield | |
| 42.3 | 1963-05-20 | 2 | 42°18'N / 72°12'W | 42°21'N / 72°08'W | 3.80 Miles | 17 Yards | 0 | 0 | 25K | 0 | Worcester |
| 42.5 | 1958-08-14 | 2 | 42°19'N / 72°38'W | 1.00 Mile | 67 Yards | 0 | 0 | 250K | 0 | Hampshire | |
| 43.1 | 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 |
| 43.2 | 1976-06-30 | 2 | 42°00'N / 73°08'W | 1.00 Mile | 100 Yards | 0 | 0 | 25K | 0 | Litchfield | |
| 44.0 | 1979-08-10 | 2 | 42°19'N / 72°08'W | 42°19'N / 71°56'W | 9.70 Miles | 30 Yards | 2 | 2 | 2.5M | 0 | Worcester |
| 44.2 | 1971-09-13 | 3 | 42°20'N / 72°40'W | 0.50 Mile | 7 Yards | 0 | 0 | 25K | 0 | Hampshire | |
| 46.8 | 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 |
| 46.9 | 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 |
| 47.4 | 1953-06-09 | 3 | 42°10'N / 71°46'W | 42°06'N / 71°29'W | 14.90 Miles | 667 Yards | 0 | 1 | 2.5M | 0 | Worcester |
| 47.9 | 1963-05-20 | 2 | 42°24'N / 72°36'W | 42°25'N / 72°34'W | 0 | 0 | 25K | 0 | Franklin | ||
| 49.0 | 1966-08-31 | 2 | 42°18'N / 71°48'W | 1.00 Mile | 67 Yards | 0 | 0 | 0K | 0 | Worcester | |
| 49.4 | 1955-07-05 | 2 | 42°26'N / 72°34'W | 0 | 0 | 3K | 0 | Franklin | |||
* 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.