Hail History

Hail history for Tyndall, South Dakota

NOAA hail reports in and within about 5 km (3 miles) of Tyndall since 1960, with preliminary reports to November 3, 2026.

Readout · Tyndall

Last hail
May 17, 2026
1.00 in, quarter size
Hail days, last 5 years
7
since Nov 3, 2021 · 9 reports
Largest ever
3.25 in
teacup · Jun 21, 1969

42 reports on 38 days since 1960 · #29 of 305 South Dakota places

Hail map · Tyndall

Tyndall Springfield Avon Tabor Scotland Lesterville Dante Utica 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
42 most recent reports with a location; Bon Homme County is shaded. Open street map

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What the record says about Tyndall

The latest hail report in and around Tyndall is from May 17, 2026, 1.00 in (quarter size). Since November 3, 2021 there have been 7 separate hail days; the biggest stones in that time were 1.75 in on July 30, 2023.

Over the 20 years 2006–2025, Tyndall logged 19 reports on 16 hail days, about 0.9 reports a year. That is about twice the median South Dakota town on this site (0.5 a year) and ranks #29 of 305 South Dakota cities and towns on this site for all-time reports. Tyndall accounts for 18% of the 232 reports filed in Bon Homme County.

14% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median South Dakota town on this site. The largest hail on record here is 3.25 in (teacup) on June 21, 1969.

Reports were up 117% in 2016–2025 (13) compared with 2006–2015 (6). The busiest year was 2023, with 5 reports on 4 days. Hail here peaks in July (40% of reports); 45% fall between April and June.

Reports a year 2006–2025 average

  • Tyndall 0.9
  • Bon Homme County 6.0
  • Median South Dakota town on this site 0.5

Hail days 2006–2025

  • Tyndall 16
  • Bon Homme County 60
  • Median South Dakota town on this site 7

Share 2 in or larger of sized reports

  • Tyndall 14%
  • Bon Homme County 7%
  • Median South Dakota town on this site 7%

Hail over time

0246 1960: 1 reports, largest 2.00 in 1960 1961: 1 reports, largest 1.00 in 1964: 1 reports, largest 0.75 in 1966: 2 reports, largest 2.75 in 1967: 1 reports, largest 1.00 in 1968: 2 reports, largest 3.00 in 1969: 1 reports, largest 3.25 in 1970 1974: 1 reports, largest 1.00 in 1980 1986: 1 reports, largest 2.75 in 1987: 1 reports, largest 1.00 in 1990 1997: 1 reports, largest 0.75 in 2000: 1 reports, largest 0.75 in 2000 2002: 2 reports, largest 1.75 in 2003: 1 reports, largest 1.00 in 2004: 3 reports, largest 1.00 in 2005: 2 reports, largest 1.25 in 2006: 2 reports, largest 0.88 in 2008: 1 reports, largest 0.88 in 2009: 1 reports, largest 2.75 in 2010: 1 reports, largest 1.00 in 2010 2011: 1 reports, largest 0.75 in 2016: 1 reports, largest 1.25 in 2017: 1 reports, largest 1.00 in 2019: 1 reports, largest 0.75 in 2020: 2 reports, largest 1.00 in 2020 2022: 1 reports, largest 0.88 in 2023: 5 reports, largest 1.75 in 2025: 2 reports, largest 1.00 in 2026: 1 reports, largest 1.00 in
Reports per year, 1960–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
05101520 Jan Feb Mar April: 2 reports (5%) Apr May: 6 reports (14%) May June: 11 reports (26%) Jun July: 17 reports (40%) Jul August: 6 reports (14%) Aug Sep Oct Nov Dec
All 42 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 1 1
2025 2 2
2024 0
2023 14 5
2022 1 1
2021 0
2020 2 2
2019 1 1
2018 0
2017 1 1

Hail days since Nov 3, 2021

DateReportsLargestStorm page
May 17, 2026 1 1.00 in —
Jul 9, 2025 2 1.00 in —
Jul 30, 2023 1 1.75 in —
Jul 24, 2023 2 1.75 in —
Jul 10, 2023 1 1.00 in —
Jun 16, 2023 1 0.88 in —
Jul 2, 2022 1 0.88 in —

Largest hail on record

Largest hail reports in Tyndall
Date Size Location County Damage Time · source
Jun 21, 1969 3.25 inteacup — Bon Homme — 18:15 local · NCEI
Jul 29, 1968 3.00 inteacup — Bon Homme — 14:10 local · NCEI
Aug 8, 2009 2.75 inbaseball 0.86 NW Tyndall Bon Homme $100K 13:30 local · NCEI
Apr 26, 1986 2.75 inbaseball — Bon Homme — 16:20 local · NCEI
Jun 19, 1966 2.75 inbaseball — Bon Homme — 18:00 local · NCEI

Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.

Size of every report

Most recent reports

Most recent hail reports in Tyndall
Date Size Location County Time · source
May 17, 2026 1.00 inquarter 1.47 SSW Tyndall Bon Homme 14:08 local · NCEI
Jul 9, 2025 1.00 inquarter 1.22 NW Tyndall Bon Homme 21:52 local · NCEI
Jul 9, 2025 0.88 innickel 1.22 NW Tyndall Bon Homme 21:48 local · NCEI
Jul 30, 2023 1.75 ingolf ball 2.81 N Tyndall Bon Homme 14:13 local · NCEI
Jul 24, 2023 1.75 ingolf ball 2.81 N Tyndall Bon Homme 01:17 local · NCEI
Jul 24, 2023 1.00 inquarter 1.22 NW Tyndall Bon Homme 01:12 local · NCEI
Jul 10, 2023 1.00 inquarter 1.22 NW Tyndall Bon Homme 13:54 local · NCEI
Jun 16, 2023 0.88 innickel 1.22 NE Tyndall Bon Homme 17:31 local · NCEI
Jul 2, 2022 0.88 innickel 1.22 NW Tyndall Bon Homme 19:00 local · NCEI
Aug 10, 2020 1.00 inquarter 1.22 NW Tyndall Bon Homme 05:35 local · NCEI
Aug 10, 2020 1.00 inquarter 0.86 NW Tyndall Bon Homme 05:33 local · NCEI
Aug 7, 2019 0.75 inpenny 1.35 NW Tyndall Bon Homme 21:42 local · NCEI

Hail history near Tyndall

Questions about hail in Tyndall

How often does it hail in Tyndall, South Dakota?

42 hail reports have been logged in and within about 5 km (3 miles) of Tyndall since 1960. Over the 20 years 2006–2025 that averages 0.9 reports a year. That ranks #29 of 305 South Dakota places by number of reports.

When is hail season in Tyndall?

Most reports come in July, June, May. July alone accounts for 40% of all reports.

What is the largest hail recorded in Tyndall?

3.25 in (teacup size) on June 21, 1969. 14% of reports here were 2 inches or larger.

When did it last hail in Tyndall?

The most recent report in this data is from May 17, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Tyndall had in the last five years?

7 separate days with hail reports since November 3, 2021, adding up to 9 reports. The most recent was May 17, 2026.

Where does this hail data come from?

Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.