ATTENTION! Damaging hail detected. Hail tracking is now active for this region: Champaign, ILATTENTION! Damaging hail detected. Hail tracking is now active for this region: Champaign, IL
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NOAA/NWS STORM PREDICTION CENTER REPORTS + U.S. CENSUS DATA
Hail, Wind & Tornado Reports in Union County, SD
Public hail, wind, and tornado reports across Union County, SD from May 3, 1959 through September 12, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.
Example: 57004 — search hail, wind and tornado public reports for any U.S. ZIP code
Hail Reports
154
Wind Reports
164
Tornado Reports
23
Max Hail Size
3.00″
Source NOAA SPC · NWS Local Storm ReportsCoverage Union County, SD · 1959–presentUpdated Daily · last Sep 12, 2026
Hail Report Description: Most hail was pea to nickel sized... but a few were quarter sized. Looked like a wall cloud was about 3 to 4 miles to the west.
NWS Hail Report Location: 10 S Alcester, SD
1.25″hail
Jun 14, 2025 11:35 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 8 ENE Vermillion, SD
1.50″hail
Jun 2, 2025 11:15 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Quarter to ping pong ball size hail.
NWS Hail Report Location: Elk Point, SD
1.75″hail
Jun 2, 2025 11:10 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Ping pong to golf ball size hail between Mile markers 19 and 22 on Interstate 29. A semi truck ran into another semi truck in the adjoining lane due to poor visibility during hail... wind and heavy rain.
NWS Hail Report Location: 3 NNW Elk Point, SD
1.00″hail
Apr 18, 2025 5:05 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Report from mPING: Quarter (1.00 in.).
NWS Hail Report Location: 7 NW Elk Point, SD
1.75″hail
May 23, 2024 3:59 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Quarter to golf ball sized hail... strong wind gusts... and heavy rain at the Sheriffs Office.
NWS Hail Report Location: Elk Point, SD
1.25″hail
Apr 16, 2024 7:07 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Report from mPING: Half Dollar (1.25 in.).
NWS Hail Report Location: 1 SE Elk Point, SD
1.00″hail
Jul 3, 2023 10:05 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Picture received through social media.
NWS Hail Report Location: 5 SE Alcester, SD
1.00″hail
Jun 24, 2023 11:55 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: In addition to hail up to the size of quarters for a few minutes... some strong winds cut up the corn a bit... but 1.25 inch of rain was wonderful.
NWS Hail Report Location: 10 S Alcester, SD
1.00″hail
May 8, 2023 11:16 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 SE Elk Point, SD
1.25″hail
Apr 20, 2023 1:13 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 SSE North Sioux City, SD
1.50″hail
Apr 20, 2023 12:48 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: REPORT RECEIVED VIA SOCIAL MEDIA.
NWS Hail Report Location: Elk Point, SD
1.00″hail
Apr 20, 2023 12:44 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Elk Point, SD
1.25″hail
Mar 31, 2023 4:26 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: ONLY LASTED A MINUTE.
NWS Hail Report Location: 2 NNW Jefferson, SD
1.75″hail
Sep 1, 2021 12:32 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6 S Beresford, SD
1.00″hail
Jul 9, 2021 5:47 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: [DELAYED REPORT] - ESTIMATES HAIL WAS QUARTER SIZE... BUT NO DAMAGE TO REPORT.
NWS Hail Report Location: 5 SW Alcester, SD
1.50″hail
Oct 11, 2020 10:07 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 9 SW Alcester, SD
1.00″hail
Oct 6, 2017 12:48 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 8 N Elk Point, SD
1.00″hail
Aug 20, 2017 2:26 AM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5 N Elk Point, SD
1.00″hail
Jun 29, 2017 11:35 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6 SW Alcester, SD
1.25″hail
Jun 29, 2017 8:55 PM UTC
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Jefferson, SD
1.00″hail
May 10, 2015 2:19 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .51 W Jefferson, SD
1.00″hail
Apr 12, 2015 5:03 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.01 E Big Spgs, SD
1.75″hail
Sep 19, 2014 8:25 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.47 SSW Hillside, SD
1.00″hail
Jun 20, 2014 4:43 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.81 S Junction City, SD
1.50″hail
Jun 16, 2014 7:04 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .86 SE Big Spgs, SD
1.25″hail
May 8, 2014 2:25 AM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 7.34 NW Alcester, SD
1.00″hail
May 27, 2012 8:45 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .51 W Graham Arpt, SD
1.00″hail
May 27, 2012 8:38 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .69 N Mc Cook Lake, SD
1.50″hail
May 27, 2012 6:15 PM CST-6
Hail report for Union County, SD
Union County · 5,272 Homes in County
Hail Report Description: Large hail was accompanied by damaging wind gusts.
NWS Hail Report Location: 4 SSW Big Spgs, SD
Showing 15 of 30
Hail Damage Risk for Your Home+
Hail reports describe hail by diameter, often comparing stone size to familiar objects like peas, quarters, golf balls, and softballs. Use this guide as a starting point for possible hail damage to your roof, siding, gutters, vents, windows, and exterior. Actual hail damage depends on hail hardness, density, wind speed, impact angle, roof age, shingle condition, roof pitch, roofing material, installation quality, and prior storm damage.
Pea
0.25″
Low
Usually too small to cause hail damage to most sound asphalt roofs, siding, or gutters.
Mothball
0.50″
Sub-Severe Watch
Below the NWS severe-hail threshold, but not always harmless. Repeated small hail can scuff surfaces, wear aging shingles, and loosen protective granules over time.
Penny
0.75″
Minor / Watch
Below the NWS severe-hail threshold, but roof hail damage is still possible on older, brittle, poorly installed, or previously damaged shingles. May also mark screens, vents, gutters, and soft metal.
Nickel
0.88″
Minor / Watch
Still below the severe-hail threshold, but large enough to leave visible marks on soft metal and add wear to older or hail-weakened roof shingles.
Quarter
1.00″
Watch
The NWS severe-hail threshold. Quarter-size hail can bruise shingles, dent soft metal, and create roof hail damage worth checking.
Half Dollar
1.25″
Watch
More likely to dent gutters, vents, flashing, and siding. Hail damage risk rises quickly on older roofs or hail-weakened shingles.
Ping Pong / Walnut
1.50″
Likely
Hail damage becomes more likely, including bruised shingles, granule loss, dented siding, and damaged roof vents.
Golf Ball
1.75″
Likely
Often causes roof hail damage, cracked shingles, dented gutters, damaged flashing, and siding impacts. A roof inspection is recommended.
Hen Egg
2.00″
Serious
Can crack or puncture shingles, expose mat, dent siding, and cause widespread hail damage across the roof and exterior.
Tennis Ball
2.50″
Serious
Can cause heavy roof hail damage, punctured siding, broken skylights, damaged vents, and widespread exterior damage.
Baseball
2.75″
Major
Major hail damage is likely, including severe roof impacts, damaged siding, broken windows, and possible major roof repairs.
Tea Cup / Large Apple
3.00″
Major
Can cause heavy hail damage across the roof, siding, gutters, windows, and exterior. Significant repairs are often needed.
Softball
4.00″
Extreme
Destructive hail damage. Can severely damage roofing materials, siding, windows, gutters, vents, vehicles, and exterior surfaces.
Grapefruit
4.50″
Extreme
Catastrophic hail damage risk for roofs, windows, vehicles, siding, gutters, and exterior surfaces.
Source: NOAA / National Weather Service hail size references are used for hail-size comparisons and the 1.00″ severe-hail threshold. Damage descriptions are general homeowner guidance, not official NOAA/NWS damage ratings. Sub-severe hail under 1.00″ is below the severe threshold, but that does not mean “no roof damage.” Penny- to nickel-size hail can still contribute to granule loss, cosmetic surface marks, and added wear, especially on older, brittle, poorly installed, or previously damaged roofs.
Wind Report Description: report via personal weather station.
NWS Wind Report Location: 3 Ssw Beresford, SD
60mph
Sep 2, 2026 2:30 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Wind measured by anemometer.
NWS Wind Report Location: 10 Sse Alcester, SD
58mph
Sep 2, 2026 2:26 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 3 Ssw Beresford, SD
UNKmph
Sep 2, 2026 2:25 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: EM reported multiple large tree branches down of 3 inches and greater. Also reported multiple power lines down. Suspected power lines were brought down by the trees. Timing aligns well with radar vel
NWS Wind Report Location: Alcester, SD
UNKmph
Sep 2, 2026 2:21 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: EM report of semi blown off I-29 at approximately 9:21 pm between mile marker 33 and 34. Timing of damage aligns well with radar wind surge.
NWS Wind Report Location: 11 Sw Alcester, SD
UNKmph
Sep 2, 2026 1:21 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: EM reported a semi blown off I-29 between mile marker 33 and 34 at approximately 8:21 pm.
NWS Wind Report Location: 11 Ne Vermillion, SD
58mph
Jul 1, 2026 7:37 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Personal weather station reported gust of 58 mph at 2:37 am CDT.
NWS Wind Report Location: 5 SSW Hudson, SD
60mph
Jul 1, 2026 7:36 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Personal weather station reported a gust of 60 mph at 2:36 am CDT.
NWS Wind Report Location: 5 SSW Hudson, SD
68mph
Jul 30, 2025 2:35 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Mesonet station 53 SD RWIS North Sioux City.
NWS Wind Report Location: 3 SE Jefferson, SD
67mph
Jul 30, 2025 2:33 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Personal weather station.
NWS Wind Report Location: 4 WSW North Sioux City, SD
73mph
Jul 30, 2025 2:05 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Mesonet station 16 SD RWIS Beresford.
NWS Wind Report Location: 3 SSW Beresford, SD
63mph
Jul 30, 2025 1:51 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Mesonet station 16 SD RWIS Beresford.
NWS Wind Report Location: 3 SSW Beresford, SD
67mph
Jul 29, 2025 2:19 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Personal weather station.
NWS Wind Report Location: 3 SSW Beresford, SD
75mph
Jul 29, 2025 2:13 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Mesonet station 16 SD RWIS Beresford.
NWS Wind Report Location: 3 SSW Beresford, SD
UNKmph
Jul 29, 2025 2:02 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Tree and powerline damage.
NWS Wind Report Location: Alcester, SD
UNKmph
Jul 29, 2025 1:53 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Tree and powerline damage.
NWS Wind Report Location: Beresford, SD
59mph
Jul 28, 2025 6:36 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: An SDDOT in North Sioux City recorded a 59 mph wind gust.
NWS Wind Report Location: 3 SE Jefferson, SD
60mph
Jul 8, 2025 1:05 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Estimated 50-60 mph wind gusts from police officer. Sporatic power outages due to tree damage around town.
NWS Wind Report Location: Elk Point, SD
UNKmph
Jul 8, 2025 12:56 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: A few very strong thunderstorm winds broke two large branches out of healthy tree... and then very heavy rain started.
NWS Wind Report Location: 5 N Elk Point, SD
UNKmph
Jun 2, 2025 11:00 PM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Large trees down across Burbank Road.
NWS Wind Report Location: 2 NW Elk Point, SD
UNKmph
Jun 2, 2025 10:54 PM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Tree and structure damage to an agricultural themed event venue. Fence at property also blown over. Additional damage 1 mile southeast of property on Burbank Road to nearby grain bins. Time estimated from radar.
NWS Wind Report Location: 7 WNW Elk Point, SD
UNKmph
Jun 2, 2025 10:52 PM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Machine shed destroyed with debris blown across road. A few large limbs broken off trees. Grain bin dented.
NWS Wind Report Location: 5 WNW Elk Point, SD
UNKmph
Jul 30, 2024 1:00 PM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Tree downed in Alcester.
NWS Wind Report Location: Alcester, SD
59mph
Jul 30, 2024 12:55 PM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Mesonet station 16 SD RWIS Beresford.
NWS Wind Report Location: 3 SSW Beresford, SD
60mph
Jul 30, 2024 4:34 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Personal Weather Station.
NWS Wind Report Location: 1 SSE North Sioux City, SD
59mph
Jul 30, 2024 4:24 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Personal Weather Station.
NWS Wind Report Location: 2 SSW North Sioux City, SD
UNKmph
Jul 30, 2024 4:22 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Large tree branch downed in Richland. Time estimated from radar.
NWS Wind Report Location: 6 NNE Elk Point, SD
UNKmph
May 23, 2024 4:00 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Broken windows and portion of roof lifted off single family home. Downed large tree limbs. Time estimated from radar.
NWS Wind Report Location: 2 NW Jefferson, SD
UNKmph
May 23, 2024 3:58 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Part of roof peeled off farm outbuilding. Time estimated from radar.
NWS Wind Report Location: 3 NW Jefferson, SD
59mph
May 8, 2024 12:31 AM UTC
Wind report for Union County, SD
Union County · 5,272 Homes in County
Wind Report Description: Very strong wind gusts measured by mobile mesonet... along with heavy rain.
NWS Wind Report Location: 1 NW Elk Point, SD
Showing 15 of 30
Wind Damage Risk for Your Home+
Storm reports list thunderstorm wind gusts in mph. The NWS marks storms as severe at 58+ mph, but wind damage to your home depends on roof age, shingle condition, installation, exposure, nearby trees, and prior hail or wind damage.
Below Severe
Under 58 mph
Minor
Usually little damage to a sound roof, but loose shingles, flashing, or debris may shift.
Severe
58–74 mph
Watch
Can loosen shingles, lift flashing, break limbs, and damage gutters, siding, fences, or trim.
Damaging
75–90 mph
Serious
Can peel shingles, damage vents, tear siding, rip gutters, and expose weak roof areas.
Extreme
90+ mph
Major
Can cause major roof covering loss, tree damage, broken windows, and structural damage.
Source: NOAA / National Weather Service storm reports. Gusts may be measured or estimated; actual wind damage varies by roof condition, exposure, and prior hail or wind damage.
Latest NWS Tornado Reports in Union County
23 reports
EF0category
May 11, 2014 6:32 PM CST-6
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A tornado uprooted several trees, caused other tree damage, blew part of the wall off a two story garage, damaged a hog barn, and took the roof off a small grain bin.
NWS Tornado Report Location: 1.48 N Spink, SD
EF1category
Oct 4, 2013 5:35 PM CST-6
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A tornado severely damaged the roof and gutters of a house, and the walls and roof of at least two storage equipment buildings. The tornado caused tree damage, including trunks snapped and large branches blown down, damaged a road sign, blew down or crushed several grain bins, blew down power poles and lines, and flattened corn crops. One of the destroyed grain bins was wrapped around a house, causing damage to the roof, siding, and gutters of the house. The tornado then crossed the Big Sioux River into Plymouth County Iowa.
NWS Tornado Report Location: 2.1 S Jefferson, SD
EF1category
Oct 4, 2013 5:28 PM CST-6
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A tornado crossed the Missouri River from Dakota County in Nebraska and entered Union County. The tornado severely damaged the roof of a house, and collapsed a chimney, carport and porch roof, and the walls of a garage in the same house. The tornado also caused tree damage, including trunks snapped, overturned an irrigation system, and damaged the roof, siding, and/or gutters of at least four other houses.
NWS Tornado Report Location: 3.98 WSW Mc Cook Lake, SD
F0category
Jun 4, 2005 8:45 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A brief tornado cause no reported damage.
NWS Tornado Report Location: 15 S Alcester, SD
F0category
May 28, 2004 8:20 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 5 SE Alcester, SD
F0category
May 28, 2004 7:53 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 8 NW Alcester, SD
F0category
Apr 18, 2004 4:05 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A tornado caused tree damage, including several trees blown down. The tornado also blew down power lines, causing local power outages.
NWS Tornado Report Location: 5 NW Nora, SD
F0category
Aug 17, 2001 4:50 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 2 S Mc Cook Lake, SD
F0category
Jul 2, 1999 7:08 AM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: 1 S Nora, SD
F0category
Jul 5, 1994 12:35 AM CDT
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: The tornado destroyed a mobile home and damaged some trees and vehicles.
NWS Tornado Report Location: Big Springs, SD
F1category
Jun 16, 1990 5:15 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F2category
Jul 7, 1987 12:10 AM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F0category
Jul 28, 1986 5:45 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F1category
Aug 12, 1985 1:53 AM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F1category
Jul 22, 1983 7:28 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F0category
Jul 22, 1983 7:28 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F0category
Jul 22, 1983 7:25 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F0category
Jul 22, 1983 7:25 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
UNKcategory
Jul 5, 1978 5:15 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
UNKcategory
Aug 8, 1969 9:00 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F3category
Jun 7, 1965 5:00 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F1category
May 8, 1964 11:00 AM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F0category
Jun 1, 1963 4:15 PM CST
Tornado report for Union County, SD
Union County · 5,272 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
Showing 15 of 23
Tornado Damage Risk for Your Home+
After a tornado, the National Weather Service assigns an EF rating from EF0 to EF5 based on surveyed damage. The rating estimates wind speed from what the tornado damaged, so actual damage can vary by construction quality, roof age, garage doors, windows, trees, debris, and how close the home was to the tornado path.
EF0
65–85 mph
Light
Can peel shingles, damage gutters or siding, break tree limbs, and toss loose outdoor items.
EF1
86–110 mph
Moderate
Can strip roof covering, damage exterior doors, break windows, snap trees, and cause heavier siding or gutter damage.
EF2
111–135 mph
Serious
Can tear off large sections of roofing, break or uproot trees, destroy weaker structures, and cause major exterior damage.
EF3–EF5
136+ mph
Severe
Can remove roofs and walls, destroy large portions of homes, toss vehicles, and cause severe to total destruction near the path.
Source: NOAA / National Weather Service. EF ratings are assigned after a post-storm damage survey and are based on observed damage, not a direct measurement at every home.
NWS Hail, Wind and Tornado Reports in Union County on the Interactive Map
Report type
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This snapshot is for local area context only and describes the selected state, county, city, or ZIP area — not a specific home or property. For ZIP-level estimated hail impact, use Free Hail Maps to generate a hail report with key impact details for that ZIP.
Top ZIP Codes with NWS Storm Reports in Union County
Not sure if hail may have affected your home in Union County? Ask a local pro for a Remote Hail Inspection. They can review hail activity for your property and help you decide whether an in-person roof or exterior inspection makes sense.
How many hail, wind, and tornado reports does Union County have on record?
Our records show 154 hail, 164 wind, and 23 tornado reports in Union County, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 12, 2026.
What is the largest hail ever reported in Union County?
The largest hail size in these storm-report records in Union County is 3.00″. It was reported near Beresford, SD on May 7, 1993.
A storm report showed up near my home in Union County — does that mean my roof is damaged?
Not necessarily. A storm report only means hail, wind, or a tornado was observed nearby; it does not confirm damage at any specific address, and conditions change from block to block. Check an address-level hail report first, and if it looks significant, find a local pro that serves Union County and ask about a Remote Hail Inspection before anyone climbs on the roof.
I am buying a home in Union County — why should I look at its storm history?
Recent hail or wind can leave a roof or exterior with damage that is easy to miss during a walkthrough, and a recent roof replacement is sometimes an insurance job after a storm. Reviewing the storm history for a Union County address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.
I am selling a home in Union County — how does this help me?
Knowing the storm history for your address lets you answer buyer questions with confidence, document repairs you have already made, and decide whether a pre-listing roof check is worthwhile. A clear hail history removes a common sticking point during negotiations.
How do I check hail history for a specific Union County address?
Use the address search to pull a free address-level hail report for any property in Union County — no phone number or email required. It shows recent hail activity for that address so you know whether a closer roof or exterior review makes sense.
Where does this storm report data come from, and what are its limits?
Storm reports on this page are public reports from storm events across Union County, SD, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported in Union County, but they do not confirm damage at any specific property. Report locations, sizes, and times may be approximate and can vary from what an individual home experienced. For property-specific hail history, use an address-level hail report or contact a participating local professional for a remote hail inspection. Pros inclusion is not an endorsement, and contacting a professional does not confirm damage at any property.
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