Hail History

Hail history for Corson County, South Dakota

Every NOAA hail report filed in Corson County since 1962, with preliminary National Weather Service reports to November 3, 2026.

Readout · Corson County

Last hail
Sep 5, 2026
1.50 in, ping pong ball size · preliminary
Hail days, last 5 years
9
since Nov 3, 2021 · 13 reports
Largest ever
3.00 in
teacup · Jul 8, 2009

312 reports on 158 days since 1962 · #13 of 67 South Dakota counties

Hail map · Corson County

McLaughlin McIntosh Little Eagle Bullhead Morristown 20 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
300 most recent reports with a location. Dot size and colour follow hail size. Open street map

For homeowners

Roof damage after hail? Get a free inspection

Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Corson County is from September 5, 2026. A local roofer can check and document it at no cost.

Phone line opening soon

What would a claim cost you? Try the hail claim calculator

Preview: this form is not connected yet. Nothing you enter is sent or stored.

Roofer? Get hail alerts for your area with StormScope

What the record says about Corson County

The latest hail report in Corson County is from September 5, 2026, 1.50 in (ping pong ball size). Since November 3, 2021 there have been 9 separate hail days; the biggest stones in that time were 1.75 in on September 12, 2025.

Over the 20 years 2006–2025, Corson County logged 217 reports on 89 hail days, about 10.8 reports a year. That is about twice the median South Dakota county (5.5 a year) and ranks #13 of 67 South Dakota counties for all-time reports. Corson County holds 2% of all 17,223 hail reports in South Dakota.

7% of reports with a size were 2 inches (hen egg) or larger, against 8% for the median South Dakota county. The largest hail on record here is 3.00 in (teacup) on July 8, 2009 near 12.48 NNE Athboy.

Reports were down 68% in 2016–2025 (52) compared with 2006–2015 (165). The busiest year was 2008, with 61 reports on 14 days. Hail here peaks in June (33% of reports); 45% fall between April and June.

Reports a year 2006–2025 average

  • Corson County 10.8
  • Median South Dakota county 5.5

Hail days 2006–2025

  • Corson County 89
  • Median South Dakota county 54

Share 2 in or larger of sized reports

  • Corson County 7%
  • Median South Dakota county 8%

Hail over time

020406080 1962: 1 reports, largest 1.00 in 1965: 1 reports, largest ? in 1966: 2 reports, largest 2.00 in 1968: 1 reports, largest 1.75 in 1969: 2 reports, largest 2.75 in 1970: 1 reports, largest 2.00 in 1970 1971: 1 reports, largest 2.75 in 1980 1983: 4 reports, largest 3.00 in 1985: 1 reports, largest 1.75 in 1986: 2 reports, largest 2.75 in 1987: 3 reports, largest 2.50 in 1989: 1 reports, largest 0.75 in 1990: 2 reports, largest 1.75 in 1990 1991: 7 reports, largest 2.00 in 1992: 3 reports, largest 1.75 in 1994: 2 reports, largest 1.75 in 1995: 8 reports, largest 2.75 in 1996: 5 reports, largest 0.75 in 1997: 6 reports, largest 2.75 in 1998: 2 reports, largest 1.75 in 2000: 1 reports, largest 0.75 in 2000 2001: 9 reports, largest 1.25 in 2002: 8 reports, largest 1.00 in 2003: 4 reports, largest 1.00 in 2004: 5 reports, largest 1.75 in 2005: 11 reports, largest 2.00 in 2006: 6 reports, largest 0.88 in 2007: 20 reports, largest 1.75 in 2008: 61 reports, largest 2.75 in 2009: 16 reports, largest 3.00 in 2010: 2 reports, largest 1.00 in 2010 2011: 21 reports, largest 1.75 in 2012: 11 reports, largest 1.75 in 2013: 16 reports, largest 2.75 in 2014: 10 reports, largest 1.00 in 2015: 2 reports, largest 1.00 in 2016: 6 reports, largest 2.00 in 2017: 3 reports, largest 1.50 in 2018: 13 reports, largest 1.75 in 2019: 12 reports, largest 1.75 in 2020: 6 reports, largest 1.75 in 2020 2021: 1 reports, largest 1.00 in 2023: 3 reports, largest 1.25 in 2024: 6 reports, largest 1.25 in 2025: 2 reports, largest 1.75 in 2026: 2 reports, largest 1.50 in
Reports per year, 1962–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
050100150 Jan Feb Mar April: 1 reports (0%) Apr May: 36 reports (12%) May June: 103 reports (33%) Jun July: 101 reports (32%) Jul August: 58 reports (19%) Aug September: 12 reports (4%) Sep October: 1 reports (0%) Oct Nov Dec
All 312 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 11 2
2025 2 2
2024 2211 6
2023 21 3
2022 0
2021 1 1
2020 6 6
2019 66 12
2018 27121 13
2017 21 3

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Sep 5, 2026 1 1.50 in View
Jun 9, 2026 1 0.75 in —
Sep 12, 2025 2 1.75 in —
Aug 28, 2024 1 1.00 in —
Jul 29, 2024 1 1.00 in —
Jun 7, 2024 2 1.00 in —
May 19, 2024 2 1.25 in —
Aug 1, 2023 1 1.00 in —
Jul 30, 2023 2 1.25 in —

Largest hail on record

Largest hail reports in Corson County
Date Size Location Time · source
Jul 8, 2009 3.00 inteacup 12.48 NNE Athboy 21:00 local · NCEI
Aug 27, 1983 3.00 inteacup — 00:00 local · NCEI
Jun 21, 2013 2.75 inbaseball 0.69 N Morristown 10:25 local · NCEI
Sep 10, 2009 2.75 inbaseball 2 SW Thunder Hawk 19:55 local · NCEI
Jun 26, 2008 2.75 inbaseball 14.71 S Black Horse 17:44 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 Corson County
Date Size Location Time · source
Sep 5, 2026 1.50 inping pong ball 4 N Klein Ranch 21:25 UTC · NWS prelim.
Jun 9, 2026 0.75 inpenny 4.09 WNW Mc Intosh 16:42 local · NCEI
Sep 12, 2025 1.00 inquarter 11.75 S Morristown 17:05 local · NCEI
Sep 12, 2025 1.75 ingolf ball 9.78 S Morristown 16:58 local · NCEI
Aug 28, 2024 1.00 inquarter 4.09 WSW Maple Leaf 16:08 local · NCEI
Jul 29, 2024 1.00 inquarter 5.82 W Mc Laughlin 03:11 local · NCEI
Jun 7, 2024 1.00 inquarter 11.75 S Morristown 17:05 local · NCEI
Jun 7, 2024 1.00 inquarter 9.69 S Keldron 16:51 local · NCEI
May 19, 2024 0.75 inpenny 5.34 W Kenel 18:08 local · NCEI
May 19, 2024 1.25 inhalf dollar 2.81 S Maple Leaf 17:15 local · NCEI
Aug 1, 2023 1.00 inquarter Mc Intosh 13:45 local · NCEI
Jul 30, 2023 1.25 inhalf dollar Mc Intosh 07:52 local · NCEI

Cities and towns in Corson County

PlaceReportsLargest
McLaughlin292.75 in
McIntosh182.00 in
Little Eagle171.75 in
Bullhead101.75 in
Morristown102.75 in

Smaller places with fewer than 10 reports

These places have too few reports for a page of their own, so their record lives here.

PlaceReportsHail daysLatest
Wakpala96Jul 4, 2020
Kenel22May 19, 2024

Questions about hail in Corson County

How often does it hail in Corson County, South Dakota?

312 hail reports have been logged in Corson County since 1962. Over the 20 years 2006–2025 that averages 10.8 reports a year. That ranks #13 of 67 South Dakota counties by number of reports.

When is hail season in Corson County?

Most reports come in June, July, August. June alone accounts for 33% of all reports.

What is the largest hail recorded in Corson County?

3.00 in (teacup size) on July 8, 2009 near 12.48 NNE Athboy. 7% of reports here were 2 inches or larger.

When did it last hail in Corson County?

The most recent report in this data is from September 5, 2026 (1.50 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

9 separate days with hail reports since November 3, 2021, adding up to 13 reports. The most recent was September 5, 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.