Hail and tornadoes in Gregory County, SD
Since January 2021, radar estimated hail somewhere in Gregory County, SD on 73 days. The biggest estimate: 3 in or larger (teacup), on Tue, Sep 1, 2026. Hail was reported to the National Weather Service inside the county on 12 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 173 hail reports in Gregory County, SD on 87 days, 16 of them 2 inches or larger. The largest: 2.75 in, near Gregory Airport, on Sun, Aug 25, 2024.
By decade: 2000s: 94 · 2010s: 42 · 2020s: 37
Tornadoes since 1950
11 tornadoes have touched Gregory County, SD since 1950, none of them rated F3/EF3 or stronger. They killed 0 and injured 2.
Strongest
- Mon, Jul 28, 2025 · EF2 · 7.43 mi long, 175 yd wide · near Bonesteel
- Mon, Jul 28, 2025 · EF1 · 11.66 mi long, 150 yd wide · near Dixon
- Tue, Aug 6, 2019 · EF1 · 3.82 mi long, 75 yd wide · near Burke · 2 injuries
- Mon, Jul 28, 2025 · EF0 · 2.71 mi long, 50 yd wide · near Lucas
- Sun, Jun 30, 2019 · EF0 · 0.65 mi long, 25 yd wide · near Lucas
Most recent
- Mon, Jul 28, 2025 · EF2 · 7.43 mi long, 175 yd wide · near Bonesteel
- Mon, Jul 28, 2025 · EF0 · 2.71 mi long, 50 yd wide · near Lucas
- Mon, Jul 28, 2025 · EF1 · 11.66 mi long, 150 yd wide · near Dixon
- Tue, Aug 6, 2019 · EF1 · 3.82 mi long, 75 yd wide · near Burke · 2 injuries
- Sun, Jun 30, 2019 · EF0 · 0.65 mi long, 25 yd wide · near Lucas
- Fri, Jul 23, 2010 · EF0 · 0.2 mi long, 50 yd wide · near Herrick
- Fri, Jul 23, 2010 · EF0 · 0.15 mi long, 50 yd wide · near Bonesteel
- Sat, May 5, 2007 · EF0 · 0.1 mi long, 50 yd wide · near Gregory
- Sat, May 5, 2007 · EF0 · 0.1 mi long, 50 yd wide · near Gregory
- Mon, Jun 9, 2003 · F0 · 4 mi long, 400 yd wide · near Gregory
By decade: 2000s: 4 · 2010s: 4 · 2020s: 3
Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.
Every hail day since January 2021
- Mon, Sep 7, 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: 3 in or larger (teacup)
Reported in the county- 1 in (Fairfax, SD)
- 2.5 in (8 WSW Pickstown, SD)
- Sun, Aug 23, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Mon, Aug 17, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Aug 6, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
- Mon, Jul 6, 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: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sat, Jun 27, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, Jun 22, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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.
- 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: 1 in or larger (quarter)
Reported in the county- 1.25 in (Burke, SD)
- Tue, Sep 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Sep 15, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Aug 28, 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.
- Wed, Aug 6, 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.
- Sun, Aug 3, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (Gregory, SD)
- Tue, Jul 29, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 28, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1.75 in (Burke, SD)
- Fri, Jul 18, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jul 15, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1.25 in (5 S Gregory, SD)
- Wed, Jul 9, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jul 8, 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: 1.5 in or larger (ping-pong ball)
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.
- Sun, Jun 22, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 19, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (2 WNW Herrick, SD)
- Mon, Apr 28, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sun, Sep 15, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Sep 14, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Aug 26, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Aug 25, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1 in (11 NE Burke, SD)
- 1.25 in (2 NNW Gregory, SD)
- 2.75 in (5 SSE Gregory, SD)
- Sat, Aug 17, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1 in (9 WSW Herrick, SD)
- Wed, Aug 14, 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: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (Burke, SD)
- 2 in (Herrick, SD)
- Mon, Jul 29, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 28, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Thu, Jul 11, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jun 25, 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 16, 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.
- Wed, Sep 20, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Thu, Sep 7, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jul 18, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Tue, Jul 11, 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: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jun 24, 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: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 22, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 1, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Aug 24, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Tue, Jul 5, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, Jul 4, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Jul 3, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Jun 24, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1 in (BONESTEEL, SD)
- 2 in (7 WSW PICKSTOWN, SD)
- Sun, Jun 12, 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: 1 in or larger (quarter)
No hail reported in the county.
- Sat, May 28, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, May 16, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
- Sun, May 8, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Sep 16, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.25 in (4 W HERRICK, SD)
- Sun, Sep 5, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Sep 4, 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.
- Wed, Jun 23, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (BURKE, SD)
- Sun, Jun 13, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Apr 6, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.