Hail and tornadoes in Day County, SD
Since December 2020, radar estimated hail somewhere in Day County, SD on 63 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 15 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 Day County, SD on 102 days, 10 of them 2 inches or larger. The largest: 2.75 in, near Roslyn, on Thu, Aug 10, 2006.
By decade: 1990s: 24 · 2000s: 73 · 2010s: 47 · 2020s: 29
Tornadoes since 1950
20 tornadoes have touched Day County, SD since 1950, none of them rated F3/EF3 or stronger.
Strongest
- Wed, Jul 17, 1996 · F2 · 5 mi long, 150 yd wide · near Pierpont
- Thu, May 12, 2022 · EF1 · 0.12 mi long, 35 yd wide · near Webster Muni Airport
- Mon, Sep 9, 2019 · EF1 · 1.56 mi long, 80 yd wide · near Bristol
- Tue, Jun 13, 2017 · EF1 · 0.21 mi long, 40 yd wide · near Holmquist
- Wed, Jul 17, 1996 · F1 · 3 mi long, 50 yd wide · near Pierpont
Most recent
- Mon, Jun 29, 2026 · EFU · 0.11 mi long, 1 yd wide · near Andover
- Thu, May 12, 2022 · EF1 · 0.12 mi long, 35 yd wide · near Webster Muni Airport
- Sat, Oct 9, 2021 · EF0 · 0.01 mi long, 10 yd wide · near Roslyn
- Sun, Aug 22, 2021 · EF0 · 0.04 mi long, 10 yd wide · near Webster Muni Airport
- Mon, Sep 9, 2019 · EF0 · 0.19 mi long, 10 yd wide · near Bristol
- Mon, Sep 9, 2019 · EF1 · 1.56 mi long, 80 yd wide · near Bristol
- Mon, Sep 9, 2019 · EF0 · 0.1 mi long, 10 yd wide · near Webster
- Tue, Jun 13, 2017 · EF1 · 0.21 mi long, 40 yd wide · near Holmquist
- Tue, Jun 14, 2016 · EF0 · 2.02 mi long, 10 yd wide · near Waubay
- Tue, Jun 14, 2016 · EF0 · 1.69 mi long, 10 yd wide · near Holmquist
By decade: 1990s: 8 · 2000s: 1 · 2010s: 7 · 2020s: 4
Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.
Every hail day since December 2020
- Sat, Aug 29, 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 in or larger (quarter)
No hail reported in the county.
- Mon, Aug 3, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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.
- Sun, Jul 19, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jul 11, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jul 7, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (5 W Webster, SD)
- Mon, Jul 6, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jun 29, 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, May 26, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Sep 12, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Aug 29, 2025
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: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, Aug 13, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1.5 in (8 E Pierpont, SD)
- Tue, Aug 5, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.5 in (5 W Webster, SD)
- Mon, Jul 28, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1 in (3 S Eden, SD)
- Sun, Jul 20, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Jul 13, 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)
No hail reported in the county.
- Sun, Jun 15, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1.25 in (1 NE Pickerel Lake Stat, SD)
- Fri, Aug 30, 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: 2 in or larger (hen egg)
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.
- Thu, Jul 25, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 14, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 9, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sat, Jul 6, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (4 WSW Pierpont, SD)
- Tue, Jun 11, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (5 S Roslyn, SD)
- Tue, Jun 4, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Jun 2, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.25 in (4 NNW Roslyn, SD)
- 1.75 in (3 S Webster, SD)
- 2 in (5 S Webster, SD)
- Tue, Apr 23, 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: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Thu, Aug 10, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Jul 13, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (2 N Pickerel Lake Stati, SD)
- 1 in (2 N Pickerel Lake Stati, SD)
- Tue, May 9, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Oct 28, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Aug 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Aug 5, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1.5 in (PIERPONT, SD)
- Sat, Jul 23, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jul 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 20, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 18, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 17, 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: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jun 20, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1 in (7 SSE WEBSTER, SD)
- Sun, May 29, 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: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (8 NNW WALLACE, SD)
- Fri, Apr 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Sep 25, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Aug 28, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 2.5 in (9 SSW WAUBAY, SD)
- Fri, Aug 27, 2021
Radar estimate anywhere in the county: 3 in or larger (teacup)
Reported in the county- 2 in (BUTLER, SD)
- 1.75 in (7 ENE LILY, SD)
- Thu, Aug 26, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Aug 23, 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)
Reported in the county- 1 in (4 N CRANDALL, SD)
- Sun, Aug 8, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Aug 6, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 27, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 26, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Jun 9, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jan 7, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jan 5, 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.