Hail and tornadoes in Douglas County, SD
Since December 2020, radar estimated hail somewhere in Douglas County, SD on 42 days. The biggest estimate: 2 in or larger (hen egg), on Sun, Jul 30, 2023. Hail was reported to the National Weather Service inside the county on 3 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 89 hail reports in Douglas County, SD on 50 days, 9 of them 2 inches or larger. The largest: 4.25 in, near Delmont, on Sat, Sep 16, 2006.
By decade: 1990s: 4 · 2000s: 35 · 2010s: 37 · 2020s: 13
Tornadoes since 1950
7 tornadoes have touched Douglas County, SD since 1950, none of them rated F3/EF3 or stronger. They killed 0 and injured 9.
Strongest
- Sun, May 10, 2015 · EF2 · 7.17 mi long, 400 yd wide · near Delmont · 9 injuries
- Tue, Jul 6, 2010 · EF0 · 1.47 mi long, 100 yd wide · near Harrison
- Tue, Jul 6, 2010 · EF0 · 1 mi long, 100 yd wide · near Joubert
- Wed, Jun 24, 2009 · EF0 · 0.24 mi long, 50 yd wide · near Harrison
- Sat, Sep 16, 2006 · F0 · 0.1 mi long, 50 yd wide · near Delmont
Most recent
- Sun, May 10, 2015 · EF2 · 7.17 mi long, 400 yd wide · near Delmont · 9 injuries
- Tue, Jul 6, 2010 · EF0 · 1.47 mi long, 100 yd wide · near Harrison
- Tue, Jul 6, 2010 · EF0 · 1 mi long, 100 yd wide · near Joubert
- Wed, Jun 24, 2009 · EF0 · 0.24 mi long, 50 yd wide · near Harrison
- Sat, Sep 16, 2006 · F0 · 0.1 mi long, 50 yd wide · near Delmont
- Tue, Jun 24, 2003 · F0 · 0.7 mi long, 50 yd wide · near Armour
- Tue, Jun 24, 2003 · F0 · 0.7 mi long, 50 yd wide · near Armour
By decade: 2000s: 4 · 2010s: 3
Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.
Every hail day since December 2020
- Mon, Sep 7, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Sep 6, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Sep 4, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sat, Jul 25, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Jul 2, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jun 30, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jun 27, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jun 9, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, May 24, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, May 17, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Aug 17, 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: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Aug 3, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Aug 2, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 22, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Fri, Jul 18, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 7, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 2, 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 in or larger (quarter)
No hail reported in the county.
- Fri, Jun 27, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jun 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (10 W Dimock, SD)
- Mon, Aug 26, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, Jul 29, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 16, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Sep 14, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Aug 21, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Aug 8, 2023
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- 2.5 in (Delmont, SD)
- 1.75 in (1 SSW Delmont, SD)
- Sun, Jul 23, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Thu, May 4, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Mar 30, 2023
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: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jun 24, 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: 1 in or larger (quarter)
No hail reported in the county.
- Sun, May 29, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, May 12, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Tue, Apr 12, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1.75 in (8 NE ARMOUR, SD)
- 1.75 in (8 NE ARMOUR, SD)
- 1.75 in (10 NE ARMOUR, SD)
- Mon, Aug 30, 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: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 5, 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: 1 in or larger (quarter)
No hail reported in the county.
- Mon, May 24, 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.