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Clark County, SD hail & severe wind history
135 storm reports on file for Clark County between 2010-05-22 and 2026-06-03 — 64 hail and 71 severe thunderstorm wind. That averages 7.9 reports a year, and Jul is the busiest month.
At a glance
- Most recent hail report: Jun 3, 2026 — 1" (quarter), 1.2 mi NW of Willow Lake.
- Hail was reported on 35 days since 2010 — about 2.1 hail days a year.
- Largest hail on record: 2.75" (baseball) on Jul 17, 2010.
- Clark County has more hail reports than 35% of the 66 South Dakota counties we cover.
Search every Clark County report
Check a single date first, or filter the full record below — pick a year, narrow to a month, or drag the hail-size slider to see only the larger stones (1", quarter size, is the National Weather Service severe threshold).
Loading Clark County storm reports…
Worst storm days in Clark County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2010-07-17 | 12 | 2.75" (baseball) | 70 mph |
| 2024-06-02 | 6 | 1.75" (golf ball) | — |
| 2025-06-19 | 6 | 1" (quarter) | 70 mph |
| 2016-07-16 | 5 | 2.5" (tennis ball) | — |
| 2022-05-12 | 5 | 1" (quarter) | 63 mph |
| 2010-07-06 | 5 | 1" (quarter) | 60 mph |
| 2025-07-23 | 5 | — | 81 mph |
| 2022-05-29 | 5 | — | 75 mph |
| 2021-08-26 | 5 | — | 81 mph |
| 2013-06-21 | 4 | — | 81 mph |
Reports by year
Report counts are driven partly by how many people were around to report a storm, so recent years tend to look busier than the early 2010s. Treat the trend as a reporting trend, not purely a weather trend.
Notable large-hail events (2" and up)
| Date | Size | Near | What was reported |
|---|---|---|---|
| 2016-07-16 | 2.5" tennis ball | 5.55 mi S of Clark | No narrative filed |
| 2010-07-17 | 2.75" baseball | 10.34 mi WNW of Crocker | A supercell thunderstorm tracking southeast across Clark county produced anywhere from quarter to baseball size hail along with wind gusts over 70 mph from Crocker to Clark to Naples to Vienna. The large hail and winds caused extensive damage to homes, outbuildings, vehicles, and thousands of acres of crops. Many tree… |
| 2010-07-17 | 2" hen egg | .49 mi W of Clark | No narrative filed |
| 2010-07-17 | 2.75" baseball | .49 mi W of Clark | Baseball hail took out hundreds of windows in homes and on vehicles throughout Clark along with damaging siding on residences and denting vehicles. Trees and gardens also suffered extensive damage from the hail and wind. |
| 2010-07-17 | 2.5" tennis ball | 2.07 mi N of Elrod | Large hail up to the size of tennis balls busted out numerous windows, caused severe siding damage, and wiped out hundreds of acres of wheat and corn. |
When does hail hit Clark County?
Across 17 years of records, July produced the most reports (50), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 0 | 0.0% |
| February | 0 | 0.0% |
| March | 0 | 0.0% |
| April | 0 | 0.0% |
| May | 23 | 17.0% |
| June | 38 | 28.1% |
| July | 50 | 37.0% |
| August | 20 | 14.8% |
| September | 3 | 2.2% |
| October | 1 | 0.7% |
| November | 0 | 0.0% |
| December | 0 | 0.0% |
Neighboring counties
Counties that share a border with Clark County (U.S. Census county adjacency), where we have storm records:
| County | Storm reports | Largest hail |
|---|---|---|
| Beadle County, SD | 235 | 2.75" |
| Spink County, SD | 207 | 4" |
| Day County, SD | 176 | 2.5" |
| Codington County, SD | 161 | 3.75" |
| Hamlin County, SD | 141 | 2.75" |
| Kingsbury County, SD | 105 | 2.75" |
See all 66 South Dakota counties →
Common questions about hail in Clark County
- How often does it hail in Clark County?
- Hail was reported on 35 separate days between 2010 and 2026, about 2.1 days a year, with July the busiest month for storm reports. 56 reports were quarter size (1") or larger.
- Does a report here mean hail hit my street?
- Not necessarily. Each report is one observation tied to a nearby landmark, and a county can be large. Storms also go unreported where few people live. Use the date check above to see what was reported nearby, and treat it as a starting point.
- How big is a 1.75" hailstone?
- Forecasters describe hail by everyday objects: 1" is a quarter, 1.75" a golf ball, 2.75" a baseball. The sizes in these reports are estimates made by the person reporting, not lab measurements.
- Where do I get the official record?
- All reports here come from the NOAA NCEI Storm Events Database, which you can search directly. For anything formal, use NOAA’s own records rather than this page.
Look up another place
About these numbers
Every row above is a report filed with the National Weather Service and archived in the NOAA NCEI Storm Events Database (FIPS 46025). Reports are eyewitness, trained-spotter and damage-survey observations, so they cluster near roads and towns and miss storms over empty country. Hail sizes are estimates. Damage figures are preliminary as filed and are never revised in this archive. Use this page for background, not for an insurance claim, a legal filing, or a roof assessment — for those, get the official record from NOAA directly.