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Lyman County, South Dakota
Tornadoes, hail, floods and severe storms recorded here between 1957 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
40
Tornado reports
237
Hail reports
38
Floods since 1996
927
All events
4
Deaths
$363K
Property damage
Tornado paths in Lyman County
The part of each tornado’s path NOAA recorded in this county, 40 in all. Zoom in and the paths widen to their surveyed width.
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Year by year
All storm eventsTornadoes
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
Most significant events
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
Tornado F3 Tornado
At 3:44 PM, the Lyman County Sheriff responded to a five-vehicle accident on Interstate 90, five miles west of Reliance. The collision occurred when a vehicle slowed due to near-blizzard conditions caused by high winds and snow showers. The South Dakota Department of Transportati…
Very heavy rainfall of 5 to 7 inches brought flash flooding to mainly eastern Lyman county. Many roads were flooded with some washed out. Two women died in two separate vehicles after driving into a washed out portion of a road. One woman was found 100 yards downstream while the …
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
High Wind High Wind
The South Dakota Department of Transportation mesonet station 5 miles north of Reliance recorded a peak wind gust of 60 mph that originated out of elevated showers.
High Wind High Wind
The South Dakota State University mesonet station 2 miles west of Oacoma recorded a peak wind gust of 62 mph as decaying showers moved overhead.
High Wind High Wind
The South Dakota Department of Transportation mesonet station 3 miles southeast of Reliance recorded a peak wind gust of 65 mph that originated out of elevated showers.
High Wind High Wind
The South Dakota Department of Transportation mesonet station 3 miles southeast of Reliance recorded a peak wind gust of 59 mph associated with decaying light showers.
High Wind High Wind
The South Dakota Department of Transportation mesonet station 5 miles north of Reliance recorded a peak wind gust of 66 mph as weak showers moved overhead.
High Wind High Wind
The South Dakota State University mesonet station near the Lower Brule community recorded a peak wind gust of 59 mph associated with decaying showers.
High Wind High Wind
The South Dakota Department of Transportation mesonet station 6 miles southwest of Joe Creek Rec Area recorded a peak wind gust of 59 mph as light showers moved through.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Hail Hail
Thunderstorm Wind Thunderstorm Wind
A member of the public estimated winds of 60 mph with the storm.
Hail Hail
Thunderstorm Wind Thunderstorm Wind
The South Dakota Department of Transportation mesonet station nine miles north-northwest of Vivian recorded a peak wind gust of 60 mph (52 knots).
Hail Hail
Golf ball-sized hail (1.75 inches) fell five miles southwest of the Counselor Creek Recreation Area.
Drought Drought
Severe Drought (D2) conditions concluded by the end of the month following widespread June rainfall.
Drought Drought
High Wind High Wind
Light showers in Lyman county generated high winds. A peak wind gust of 71 mph was recorded at the South Dakota Department of Transportation (SDDOT) mesonet station 5 miles north of Reliance, while a 58 mph wind gust was recorded by the SDDOT mesonet station 3 miles southeast of …
Drought Drought
Drought Drought
High Wind High Wind
The South Dakota Department of Transportation (SDDOT) Road Weather Information System (RWIS) station 3 miles southeast of Reliance recorded a peak wind gust of 77 mph, while the SDDOT RWIS 6 miles southwest of Joe Creek Rec Area and 9 miles north northwest of Vivian both recorded…
High Wind High Wind
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
High Wind High Wind
Winter Weather Winter Weather
Law enforcement reported a vehicle rollover on Interstate 90, west of Vivian. The incident was caused by high winds and light snow which led to poor visibility in the area, along with icy road conditions. A peak wind gust of 54 mph was recorded on the South Dakota State Universit…
High Wind High Wind
High Wind High Wind
High Wind High Wind
High Wind High Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Hail Hail
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
A peak wind gust of 73 mph was recorded at a South Dakota State University mesonet station 12 miles south of Vivian.
Thunderstorm Wind Thunderstorm Wind
A caller stated that winds with the storms gusted to between 50 and 60 mph.
Thunderstorm Wind Thunderstorm Wind
Thunderstorm Wind Thunderstorm Wind
Hail Hail
Hail measuring one inch in diameter was reported nine miles southwest of Oacoma.
Hail Hail
Hail measuring 1.25 inches in diameter was reported in the town of Kennebec.
Events by year, as a table
| Year | Events | Tornadoes |
|---|---|---|
| 2026 | 32 | 0 |
| 2025 | 55 | 1 |
| 2024 | 31 | 0 |
| 2023 | 37 | 0 |
| 2022 | 52 | 1 |
| 2021 | 24 | 0 |
| 2020 | 24 | 0 |
| 2019 | 43 | 1 |
| 2018 | 44 | 0 |
| 2017 | 36 | 0 |
| 2016 | 25 | 0 |
| 2015 | 34 | 0 |
| 2014 | 11 | 0 |
| 2013 | 28 | 0 |
| 2012 | 30 | 0 |
| 2011 | 40 | 1 |
| 2010 | 38 | 1 |
| 2009 | 16 | 0 |
| 2008 | 26 | 0 |
| 2007 | 18 | 0 |
| 2006 | 21 | 0 |
| 2005 | 13 | 0 |
| 2004 | 22 | 0 |
| 2003 | 27 | 3 |
| 2002 | 22 | 1 |
| 2001 | 7 | 0 |
| 2000 | 21 | 0 |
| 1999 | 19 | 1 |
| 1998 | 5 | 0 |
| 1997 | 16 | 0 |
| 1996 | 24 | 0 |
| 1994 | 1 | 0 |
| 1992 | 1 | 0 |
| 1991 | 1 | 0 |
| 1990 | 3 | 0 |
| 1988 | 2 | 0 |
| 1987 | 17 | 15 |
| 1986 | 5 | 1 |
| 1985 | 6 | 1 |
| 1984 | 2 | 0 |
| 1983 | 5 | 0 |
| 1982 | 6 | 4 |
| 1981 | 1 | 0 |
| 1980 | 4 | 0 |
| 1979 | 2 | 0 |
| 1977 | 3 | 0 |
| 1976 | 1 | 0 |
| 1975 | 1 | 0 |
| 1974 | 4 | 0 |
| 1973 | 1 | 0 |
| 1972 | 1 | 1 |
| 1971 | 7 | 4 |
| 1970 | 1 | 0 |
| 1969 | 2 | 1 |
| 1967 | 1 | 0 |
| 1963 | 1 | 0 |
| 1962 | 1 | 1 |
| 1960 | 2 | 2 |
| 1958 | 2 | 0 |
| 1957 | 2 | 0 |
Search your address
See every tornado that passed within 25 miles of a place in Lyman County, measured to its path.
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