Clark County Natural Disasters and Weather Extremes
Hot South Dakota Rankings
The chance of earthquake damage in Clark County is about the same as South Dakota average and is much lower than the national average. The risk of tornado damage in Clark County is about the same as South Dakota average and is lower than the national average.
Earthquake Index, #46
| Clark County | 0.01 |
| South Dakota | 0.05 |
| 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
| Clark County | 0.0000 |
| South Dakota | 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, #22
| Clark County | 117.85 |
| South Dakota | 114.73 |
| 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 8,126 other weather extremes events within 50 miles of Clark County 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: | 75 | Cold: | 19 | Dense Fog: | 2 | Drought: | 14 |
| Dust Storm: | 0 | Flood: | 477 | Hail: | 4,357 | Heat: | 5 | Heavy Snow: | 67 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 11 | Landslide: | 0 | Strong Wind: | 81 |
| Thunderstorm Winds: | 2,709 | Tropical Storm: | 0 | Wildfire: | 10 | Winter Storm: | 80 | Winter Weather: | 73 |
| Other: | 146 | ||||||||
Volcanos Nearby
No volcano is found in or near Clark County.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Clark County.
No historical earthquake events found in or near Clark County.
Historical Tornado Events
A total of 38 historical tornado events that had recorded magnitude of 2 or above found in or near Clark County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 5.3 | 1984-05-12 | 3 | 44°53'N / 97°44'W | 44°50'N / 97°30'W | 14.00 Miles | 1320 Yards | 0 | 0 | 2.5M | 0 | Clark |
| 6.3 | 1961-06-21 | 3 | 44°59'N / 97°59'W | 44°33'N / 97°32'W | 37.10 Miles | 33 Yards | 1 | 7 | 250K | 0 | Clark |
| 10.1 | 1963-07-26 | 2 | 44°57'N / 97°53'W | 1.00 Mile | 1000 Yards | 0 | 0 | 25K | 0 | Clark | |
| 10.6 | 1964-06-08 | 2 | 44°47'N / 97°32'W | 0 | 0 | 0K | 0 | Clark | |||
| 11.5 | 1964-06-08 | 2 | 44°58'N / 97°33'W | 0 | 0 | 0K | 0 | Clark | |||
| 14.6 | 1953-05-29 | 2 | 44°39'N / 97°37'W | 44°41'N / 97°34'W | 1.90 Miles | 33 Yards | 0 | 0 | 25K | 0 | Clark |
| 14.9 | 1962-07-07 | 2 | 44°42'N / 97°33'W | 44°40'N / 97°32'W | 0 | 0 | 25K | 0 | Clark | ||
| 16.0 | 1964-06-08 | 2 | 45°05'N / 97°40'W | 0.50 Mile | 33 Yards | 0 | 0 | 0K | 0 | Clark | |
| 17.3 | 1984-05-12 | 3 | 44°50'N / 97°30'W | 44°48'N / 97°15'W | 13.00 Miles | 1320 Yards | 0 | 0 | 2.5M | 0 | Codington |
| 21.3 | 1964-07-23 | 2 | 44°51'N / 98°13'W | 44°55'N / 98°06'W | 6.80 Miles | 33 Yards | 0 | 0 | 25K | 0 | Spink |
| 22.1 | 1959-07-07 | 2 | 45°03'N / 98°05'W | 0 | 0 | 25K | 0 | Spink | |||
| 24.1 | 1965-05-20 | 2 | 44°27'N / 97°54'W | 44°35'N / 97°47'W | 10.40 Miles | 150 Yards | 0 | 0 | 3K | 0 | Beadle |
| 27.5 | 1983-07-18 | 3 | 44°54'N / 97°10'W | 0.50 Mile | 100 Yards | 0 | 0 | 2.5M | 0 | Codington | |
| 28.2 | 1962-08-06 | 2 | 45°03'N / 97°13'W | 0 | 0 | 250K | 0 | Codington | |||
| 28.7 | 2003-06-24 | 2 | 44°26'N / 97°54'W | 44°29'N / 97°54'W | 2.00 Miles | 150 Yards | 0 | 0 | 0 | 0 | Beadle |
| Brief Description: A tornado destroyed or heavily damaged farm structures. | |||||||||||
| 29.4 | 1986-07-18 | 2 | 44°34'N / 97°27'W | 44°35'N / 97°06'W | 14.00 Miles | 100 Yards | 0 | 0 | 25K | 0 | Hamlin |
| 30.0 | 2003-06-24 | 2 | 44°25'N / 97°39'W | 44°26'N / 97°37'W | 2.20 Miles | 200 Yards | 0 | 0 | 200K | 0 | Kingsbury |
| Brief Description: A tornado caused heavy damage to farm buildings including homes. | |||||||||||
| 30.7 | 1979-06-19 | 2 | 44°54'N / 97°06'W | 0 | 0 | 2.5M | 0 | Codington | |||
| 31.0 | 1981-07-22 | 2 | 44°47'N / 97°06'W | 0 | 0 | 250K | 0 | Hamlin | |||
| 31.7 | 1961-06-21 | 3 | 45°28'N / 98°14'W | 44°59'N / 97°59'W | 35.40 Miles | 33 Yards | 0 | 0 | 3K | 0 | Brown |
| 32.6 | 1962-07-07 | 2 | 44°24'N / 97°54'W | 0.20 Mile | 33 Yards | 0 | 0 | 3K | 0 | Beadle | |
| 34.4 | 1972-07-19 | 2 | 44°22'N / 97°52'W | 0.30 Mile | 150 Yards | 0 | 0 | 25K | 0 | Beadle | |
| 34.9 | 2003-06-24 | 4 | 44°17'N / 97°46'W | 44°25'N / 97°43'W | 10.00 Miles | 1000 Yards | 0 | 4 | 3.0M | 0 | Kingsbury |
| Brief Description: A tornado destroyed or heavily damaged all buildings, other structures, and vehicles in the small town of Manchester. Propane and fuel oil tanks were destroyed. Many homes were stripped to the foundation. Of the six residents of the town, four were injured and were transported to hospitals. Three were deemed to be seriously injured, but non of the injuries were life threatening. One of the injured was in a basement, one was blown out of the home on the way to the same basement, and two were in a mobile home which was destroyed. The tornado damaged crops, trees, and power lines south of Manchester prior to reaching the town. The tornado also heavily damaged several farms north of Manchester, including two farms on which several buildings including the homes were destroyed. One of the farms was a "Centennial Farm". About 12 cattle were killed and others injured. The amount of crop damage was not known. During its path, the tornado was observed to have multiple vortices. The tornado was observed and video taped by numerous storm chasers and researchers. Researchers also deployed weather sensors around the town of Manchester. One of these sensors recorded a 100 millibar pressure drop as the tornado passed. | |||||||||||
| 35.6 | 2003-06-24 | 3 | 44°22'N / 98°02'W | 44°24'N / 98°00'W | 3.50 Miles | 300 Yards | 0 | 0 | 1.5M | 0 | Beadle |
| Brief Description: A tornado destroyed farm buildings and numerous trees, resulting in F3 damage southwest of Cavour. Homes and businesses within the town of Cavour were severely damaged (F2). Winds of 120 mph were measured by an anemometer on top of a grain elevator in Cavour. | |||||||||||
| 36.9 | 1955-06-28 | 2 | 45°18'N / 98°10'W | 45°20'N / 98°03'W | 5.40 Miles | 50 Yards | 0 | 0 | 25K | 0 | Brown |
| 42.1 | 1956-06-21 | 2 | 45°10'N / 98°28'W | 0 | 0 | 0K | 0 | Spink | |||
| 43.9 | 2006-08-24 | 2 | 44°19'N / 98°10'W | 44°15'N / 98°04'W | 7.00 Miles | 300 Yards | 0 | 0 | 2.0M | 0 | Beadle |
| Brief Description: A tornado severely damaged 3 houses and destroyed or damaged a barn and several smaller buildings on farmsteads. The tornado knocked down power poles, with a transformer on one of the poles starting a brief fire. A tree shelter belt and crops were damaged. The amount of crop damage was not known. | |||||||||||
| 44.1 | 1996-07-17 | 2 | 45°29'N / 97°51'W | 45°30'N / 97°45'W | 5.00 Miles | 150 Yards | 0 | 0 | 200K | 0 | Day |
| Brief Description: A tornado touched down one mile southwest of Pierpont and traveled east northeast. Two miles east of Pierpont the tornado took out the west wall and the roof of a farmhouse, destroyed a machine shop, a garage, and six grain bins. A truck had its windshield crushed and its side was dented by debris. The tornado also brought down some power lines and several trees in its path. | |||||||||||
| 44.6 | 1969-06-25 | 3 | 45°27'N / 98°05'W | 1.50 Miles | 133 Yards | 0 | 6 | 250K | 0 | Brown | |
| 45.0 | 1961-06-21 | 3 | 44°33'N / 97°32'W | 44°00'N / 97°05'W | 43.90 Miles | 33 Yards | 0 | 0 | 250K | 0 | Kingsbury |
| 45.2 | 1992-06-16 | 3 | 44°21'N / 97°10'W | 44°21'N / 97°07'W | 2.00 Miles | 100 Yards | 0 | 0 | 2.5M | 0 | Kingsbury |
| 45.8 | 1957-06-20 | 2 | 45°01'N / 98°38'W | 1 | 0 | 25K | 0 | Spink | |||
| 46.6 | 1971-06-19 | 2 | 44°34'N / 96°52'W | 0 | 0 | 3K | 0 | Deuel | |||
| 46.6 | 1973-07-01 | 3 | 45°15'N / 98°30'W | 0.30 Mile | 30 Yards | 1 | 3 | 25K | 0 | Brown | |
| 47.6 | 1992-06-16 | 3 | 44°21'N / 97°07'W | 44°19'N / 97°04'W | 2.00 Miles | 100 Yards | 0 | 0 | 2.5M | 0 | Brookings |
| 47.7 | 1962-05-16 | 2 | 44°10'N / 97°39'W | 0 | 0 | 0K | 0 | Miner | |||
| 48.4 | 1953-06-15 | 2 | 45°30'N / 97°59'W | 45°35'N / 97°52'W | 7.60 Miles | 33 Yards | 0 | 0 | 3K | 0 | Day |
| 50.0 | 2006-08-24 | 3 | 44°25'N / 98°41'W | 44°19'N / 98°16'W | 19.50 Miles | 500 Yards | 0 | 2 | 15.0M | 0 | Beadle |
| Brief Description: A tornado, entering Beadle County from Hand County to the west, destroyed 8 houses, damaged at least 7 other houses, and destroyed or damaged numerous farm buildings. One of the destroyed houses and several destroyed small buildings were on a farmstead 2 miles south of Wessington, and five large high voltage transmission towers were blown down about 3 miles southeast of Wessington. A woman was cut on the neck at one farm southwest of Wolsey where the house and all other buildings were destroyed; the injury was not life threatening. The tornado tossed a car and 2 pickups up to 50 feet at the same farm. Another non life threatening injury occurred southeast of Wolsey, again on a farm where the house and all buildings were destroyed. Several vehicles were destroyed or damaged. The tornado killed 10 head of cattle at one farmstead just south of Wolsey. The tornado snapped off numerous power poles, caused widespread tree damage, and severely damaged a bridge where it crossed U.S. Highway 14. The tornado also caused crop damage, but the amount of crop damage was not known. The tornado dissipated one and a half miles southwest of Huron. | |||||||||||
* 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.