Hail and tornadoes in Walworth County, SD

Since January 2021, radar estimated hail somewhere in Walworth County, SD on 52 days. The biggest estimate: 3 in or larger (teacup), on Fri, Aug 27, 2021. Hail was reported to the National Weather Service inside the county on 10 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail

since January 2021

1 inch or larger

days, estimated or reported

Largest radar estimate

3+ in

Fri, Aug 27, 2021

Largest reported

2.5 in

Fri, Aug 27, 2021

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 130 hail reports in Walworth County, SD on 62 days, 9 of them 2 inches or larger. The largest: 3 in, near Lowry, on Thu, Aug 23, 2018.

By decade: 2000s: 30 · 2010s: 82 · 2020s: 18

Tornadoes since 1950

12 tornadoes have touched Walworth County, SD since 1950, none of them rated F3/EF3 or stronger.

Strongest

Sat, May 22, 2010 · EF2 · 1.84 mi long, 600 yd wide · near Java
Sun, Sep 14, 2025 · EF1 · 3.99 mi long, 200 yd wide · near Glenham
Sat, May 22, 2010 · EF1 · 0.5 mi long, 100 yd wide · near Java
Fri, Jun 1, 2018 · EF0 · 0.11 mi long, 10 yd wide · near Glenham
Tue, Jul 26, 2011 · EF0 · 0.37 mi long, 10 yd wide · near Lowry

Most recent

Sun, Sep 14, 2025 · EF1 · 3.99 mi long, 200 yd wide · near Glenham
Fri, Jun 1, 2018 · EF0 · 0.11 mi long, 10 yd wide · near Glenham
Tue, Jul 26, 2011 · EF0 · 0.37 mi long, 10 yd wide · near Lowry
Sat, May 22, 2010 · EF2 · 1.84 mi long, 600 yd wide · near Java
Sat, May 22, 2010 · EF1 · 0.5 mi long, 100 yd wide · near Java
Sat, May 22, 2010 · EF0 · 0.48 mi long, 50 yd wide · near Akaska
Tue, Jun 16, 2009 · EF0 · 0.15 mi long, 10 yd wide · near Lowry
Fri, Aug 10, 2007 · EF0 · 0.1 mi long, 10 yd wide · near Lowry
Sun, Jun 17, 2007 · EF0 · 0.1 mi long, 10 yd wide · near Akaska
Sun, Jun 17, 2007 · EF0 · 0.2 mi long, 20 yd wide · near Java

By decade: 2000s: 6 · 2010s: 5 · 2020s: 1

Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.

Every hail day since January 2021

Sun, Sep 6, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Sep 5, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 29, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1.5 in (9 SW Bowdle, SD)
Mon, Aug 24, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Sat, Aug 8, 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: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Jul 7, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (Selby, SD)
Mon, Jul 6, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 4, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 15, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jun 7, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jun 2, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (2 N Hoven, SD)
Fri, Aug 15, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Aug 14, 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: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (6 NNE Lowry, SD)
Tue, Aug 5, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (6 W Hoven, SD)
Mon, Jul 28, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Mon, Jul 21, 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: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 14, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jun 27, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 21, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (Mobridge, SD)
Sat, Jun 14, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Sep 14, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Aug 14, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 27, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 20, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jun 27, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, May 23, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Apr 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jul 30, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1.75 in (Akaska, SD)
- 1 in (Mobridge Municipal Airp, SD)
Fri, Jul 7, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
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 9, 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.
Thu, Jul 21, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jul 7, 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: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jun 24, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (7 S GLENHAM, SD)
Thu, Jun 23, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jun 19, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 13, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Wed, May 11, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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.
Fri, Apr 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Aug 27, 2021
Radar estimate anywhere in the county: 3 in or larger (teacup)
Reported in the county
- 2.5 in (5 N LOWRY, SD)
- 1 in (3 NNE SELBY, SD)
- 1.25 in (GLENHAM, SD)
Mon, Aug 23, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jul 26, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (GLENHAM, SD)
Thu, Jul 22, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 3, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jun 7, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.

Check your own address →Weather in Walworth County, SD now →Get warned before the next storm →

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.