Hail and tornadoes in Sanborn County, SD
Since October 2020, radar estimated hail somewhere in Sanborn County, SD on 66 days. The biggest estimate: 3 in or larger (teacup), on Sun, Jul 3, 2022. Hail was reported to the National Weather Service inside the county on 4 days.
Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.
Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.

Hail on record since 1955
NOAA's Storm Events database lists 98 hail reports in Sanborn County, SD on 68 days, 5 of them 2 inches or larger. The largest: 2.75 in, near Artesian, on Wed, Jun 24, 2009.
By decade: 1990s: 9 · 2000s: 65 · 2010s: 17 · 2020s: 7
Tornadoes since 1950
10 tornadoes have touched Sanborn County, SD since 1950, 1 of them rated F3/EF3 or stronger.
Strongest
- Tue, Jun 24, 2003 · F3 · 5 mi long, 500 yd wide · near Woonsocket
- Sat, May 5, 2007 · EF1 · 0.5 mi long, 100 yd wide · near Artesian
- Fri, Jun 4, 1999 · F1 · 10 mi long, 400 yd wide · near Woonsocket
- Sat, Jun 23, 2018 · EF0 · 0.18 mi long, 50 yd wide · near Forestburg
- Wed, Jun 24, 2009 · EF0 · 0.41 mi long, 50 yd wide · near Artesian
Most recent
- Sat, Jun 23, 2018 · EF0 · 0.18 mi long, 50 yd wide · near Forestburg
- Wed, Jun 24, 2009 · EF0 · 0.41 mi long, 50 yd wide · near Artesian
- Sat, May 5, 2007 · EF1 · 0.5 mi long, 100 yd wide · near Artesian
- Sat, Sep 16, 2006 · F0 · 0.1 mi long, 50 yd wide · near Woonsocket
- Mon, Jun 5, 2006 · F0 · 2 mi long, 200 yd wide · near Forestburg
- Tue, Jun 24, 2003 · F0 · 0.1 mi long, 50 yd wide · near Artesian
- Tue, Jun 24, 2003 · F0 · 0.5 mi long, 50 yd wide · near Woonsocket
- Tue, Jun 24, 2003 · F3 · 5 mi long, 500 yd wide · near Woonsocket
- Tue, Jun 24, 2003 · F0 · 0.1 mi long, 50 yd wide · near Forestburg
- Fri, Jun 4, 1999 · F1 · 10 mi long, 400 yd wide · near Woonsocket
By decade: 1990s: 1 · 2000s: 8 · 2010s: 1
Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.
Every hail day since October 2020
- Fri, Sep 4, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Tue, Sep 1, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Aug 6, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, Aug 3, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 25, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jul 2, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Tue, Jun 9, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Sep 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Sep 2, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Aug 21, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Aug 15, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Aug 13, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Aug 5, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jul 29, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, Jul 28, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Jul 27, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Wed, Jul 23, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 20, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1.5 in (Woonsocket, SD)
- Tue, Jul 15, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, Jul 9, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 7, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jun 28, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, May 19, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 N Artesian, SD)
- Sun, Apr 27, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Sep 17, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Aug 26, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Aug 25, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Aug 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 31, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 30, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 29, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 6, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Jun 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 2, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, May 30, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, May 8, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Sep 29, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Sep 14, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Jul 30, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 25, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, Jul 19, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 3, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jun 23, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jun 16, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jun 10, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 8, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, May 29, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, May 11, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Oct 23, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Sep 8, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Aug 2, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 26, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 5, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Sun, Jul 3, 2022
Radar estimate anywhere in the county: 3 in or larger (teacup)
Reported in the county- 1 in (8 E ALPENA, SD)
- Sun, Jun 12, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, May 30, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, May 29, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Thu, May 12, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, May 11, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, May 8, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Oct 9, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Aug 30, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Aug 26, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Aug 22, 2021
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1 in (3 SW LETCHER, SD)
- Thu, Jul 8, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Jun 23, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.