Home › South Dakota › Gregory County
Gregory County, SD hail & severe wind history
154 storm reports on file for Gregory County between 2010-05-24 and 2026-06-28 — 78 hail and 76 severe thunderstorm wind. That averages 9.1 reports a year, and Jun is the busiest month.
Hail reports
78
4.6 per year
Largest hail
2.75"
baseball size · 2024-08-25
Strongest gust
101 mph
88 kt · 2019-08-06
Reported damage
$291K
property + crop, as filed
Storm days
76
distinct days with a report
Busiest year
2019
22 reports
Search every Gregory County report
Filter the full record below — pick a year, narrow to a month, or drag the hail-size slider to see only the storms big enough to dent a roof (1" and up is the usual threshold insurers care about).
154 of 154 reports match.
Reports by month for the current filter — the shape of Gregory County’s storm season.
| Date | Type | Size / gust | Nearest location | Report detail |
|---|---|---|---|---|
| 2026-06-28 00:20 | Wind | 62 kt 71 mph | .86 mi SW of Herrick | Thunderstorm wind gusts were measured by a personal weather station. |
| 2026-06-28 00:25 | Wind | 75 kt 86 mph | 5.7 mi NNE of Herrick | Thunderstorm wind gusts were measured by a personal weather station. |
| 2026-06-28 00:48 | Wind | 50 kt 58 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts were measured by the South Dakota Road Weather Information System site near Ft. Randall Dam. |
| 2026-06-27 23:52 | Wind | 52 kt 60 mph | 1.51 mi E of Dallas | Thunderstorm wind gusts were measured by the South Dakota Road Weather Information System site near Dallas. |
| 2026-06-09 21:38 | Wind | 60 kt 69 mph | 4.27 mi WSW of Fairfax | Thunderstorm wind gust was measured by a personal weather station. |
| 2026-06-09 21:43 | Wind | 50 kt 58 mph | .86 mi SW of Bonesteel | Thunderstorm wind gust was measured by a personal weather station. |
| 2026-06-09 21:43 | Wind | 63 kt 72 mph | 3.11 mi ENE of Fairfax | Thunderstorm wind gust was measured by a personal weather station. |
| 2026-06-09 21:43 | Wind | 52 kt 60 mph | 4.75 mi ESE of Fairfax | Thunderstorm wind gust was measured by a personal weather station. |
| 2026-06-09 21:55 | Wind | 61 kt 70 mph | 5.7 mi NNE of Herrick | Thunderstorm wind gust was measured by a personal weather station. |
| 2026-06-09 22:06 | Wind | 56 kt 64 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts were measured by the South Dakota Road Weather Information System site at Fort Randall Dam. |
| 2026-05-17 12:40 | Hail | 1.25" half dollar | .5 mi E of Burke | No narrative filed · source: Trained Spotter |
| 2026-05-17 12:45 | Wind | 66 kt 76 mph | 5.7 mi NNE of Herrick | Wind gust measured by a personal weather station. |
| 2026-05-17 12:56 | Wind | 56 kt 64 mph | 2.88 mi WSW of Bonesteel | Wind gust measured by a personal weather station. |
| 2026-05-17 13:30 | Wind | 68 kt 78 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gust was measured by the South Dakota Road Weather Information System site at Fort Randall Dam. |
| 2025-08-17 21:13 | Wind | 55 kt 63 mph | 5.88 mi NNE of Dixon | Thunderstorm wind gusts were measured by South Dakota Mesonet station GRMS2 Gregory 16N. |
| 2025-08-16 00:52 | Wind | 50 kt 58 mph | 2.12 mi ENE of Dixon | Thunderstorm wind gusts were measured by a Road Weather Information System sensor 2 miles east of Dixon. |
| 2025-08-16 00:55 | Wind | 59 kt 68 mph | 5.88 mi NNE of Dixon | Thunderstorm wind gusts were measured by South Dakota Mesonet station GRMS2 Gregory 16N. |
| 2025-08-13 21:12 | Wind | 52 kt 60 mph | 4.61 mi NNE of Paxton | Thunderstorm winds, which gusted as high as 60 mph, were measured by South Dakota Mesonet station GGMS2 Gregory 7SSW. |
| 2025-08-13 21:31 | Wind | 54 kt 62 mph | 5.7 mi NNE of Herrick | Thunderstorm wind gusts as high as 62 mph were measured by a personal weather station. |
| 2025-08-03 17:00 | Hail | 1" quarter | .69 mi N of Gregory | No narrative filed · source: Public |
| 2025-07-28 17:15 | Hail | 1.75" golf ball | .5 mi E of Burke | Hail occurred for 15 minutes, as size varied from quarters to golf balls. Most hail was quarter to half-dollar size. |
| 2025-07-15 15:45 | Wind | 62 kt 71 mph | 2.12 mi ENE of Dixon | Thunderstorm wind gusts were measured by a Road Weather Information System sensor 2 miles east of Dixon. |
| 2025-07-15 16:01 | Hail | 1.25" half dollar | 4.18 mi S of Gregory Arpt | In addition to hail up to half dollar size, heavy rain and 40-50 mph wind gusts stripped some leaves from trees. |
| 2025-07-15 16:17 | Wind | 56 kt 64 mph | 5.7 mi NNE of Herrick | Thunderstorm wind gusts were measured by a personal weather station. |
| 2025-07-15 16:55 | Wind | 52 kt 60 mph | .69 mi N of Bonesteel | Several large tree limbs down in town. |
| 2025-07-15 17:08 | Wind | 53 kt 61 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts were measured by a Road Weather Information System sensor near Pickstown. |
| 2025-06-28 21:53 | Hail | 0.88" nickel | 2.13 mi WNW of Herrick | No narrative filed · source: Trained Spotter |
| 2025-06-28 22:06 | Hail | 1" quarter | 2.44 mi NE of Herrick | Hail fell for several minutes, but was only briefly nickel to quarter size. |
| 2025-06-27 19:29 | Wind | 67 kt 77 mph | 5.88 mi NNE of Dixon | Winds measured by South Dakota Mesonet station Gregory 16N. |
| 2025-06-19 17:40 | Hail | 1" quarter | 2.13 mi WNW of Herrick | Dime to quarter-sized hail fell near Herrick. |
| 2025-05-14 20:45 | Wind | 52 kt 60 mph | 2.88 mi WSW of Bonesteel | Thunderstorm wind gust was measured by a personal weather station. |
| 2024-08-25 17:30 | Hail | 1.25" half dollar | 2.13 mi NNW of Gregory | A couple of windows were broken in a camper and holes punched in siding due to wind-driven hail. |
| 2024-08-25 17:48 | Hail | 2.75" baseball | 3.49 mi S of Gregory Arpt | Considerable quarter to golf ball size hail fell, with a few stones up to baseball size. |
| 2024-08-25 17:49 | Hail | 1.75" golf ball | 4.48 mi SW of Burke Muni Arpt | No narrative filed · source: Public |
| 2024-08-25 17:57 | Hail | 1" quarter | 1.22 mi SW of Burke Muni Arpt | Initially quarter size hail became smaller, but continued through 1802 CST. |
| 2024-08-25 18:11 | Wind | 74 kt 85 mph | 2.44 mi NE of Lucas | Thunderstorm winds uprooted or snapped several trees. |
| 2024-08-25 18:12 | Wind | 72 kt 83 mph | 5.7 mi NNE of Herrick | Thunderstorm wind gusts as high as 83 mph were measured by personal weather station KSDHERRI4. |
| 2024-08-25 18:13 | Hail | 1" quarter | 3.6 mi NNE of Lucas | No narrative filed · source: Public |
| 2024-08-18 04:02 | Hail | 1" quarter | 4.75 mi ESE of Carlock | A considerable amount of quarter size and smaller hail fell along with heavy rainfall, which resulted in significant damage to the corn crop. |
| 2024-08-18 04:06 | Hail | 1" quarter | 7.42 mi ESE of Carlock | A large amount of hail up to the size of quarters fell for 10 to 15 minutes, and drifts of hail remained through 0735 CST. Corn fields were badly stripped. Rainfall of 2.95 inches accompanied the hail. |
| 2024-07-31 17:42 | Hail | 1" quarter | .5 mi E of Burke | No narrative filed · source: Law Enforcement |
| 2024-07-31 18:00 | Hail | 2" hen egg | .5 mi W of Herrick | No narrative filed · source: Social Media |
| 2024-07-29 20:07 | Wind | 56 kt 64 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts peaked at 64 mph at the South Dakota Road Weather Information System site near Pickstown. |
| 2024-07-28 20:30 | Hail | 2.75" baseball | 8.58 mi E of Lucas | Hail ranged from golf ball to baseball size. Multiple windshields were broken with large dents in vehicles and corn was stripped of most of its leaves. |
| 2024-07-14 01:20 | Wind | 53 kt 61 mph | 6.07 mi NNE of Dixon | An extended duration of strong to severe winds gusted at times to 61 mph at the SDSU mesonet station 16 miles north of Gregory. |
| 2024-07-14 01:21 | Wind | 63 kt 72 mph | 2.6 mi ENE of Dixon | Thunderstorm wind gusts reached severe levels at the South Dakota Road Weather Information System site near Dixon, then attained a peak of 72 mph at 223 am CST. |
| 2024-07-14 02:20 | Wind | 50 kt 58 mph | 1.51 mi E of Dallas | A thunderstorm wind gust of 58 mph was measured by the South Dakota Road Weather Information System site at Dallas. |
| 2023-07-18 21:15 | Wind | 51 kt 59 mph | 4.61 mi NNE of Paxton | Thunderstorm wind gusts up to 59 mph were measured by South Dakota State University Mesonet site GGMS2 7 miles south-southwest of Gregory. |
| 2023-07-14 17:03 | Wind | 58 kt 67 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts up to 67 mph were measured by South Dakota Road Weather Information System site SD588 2 miles west-southwest of Pickstown. |
| 2023-07-12 02:01 | Wind | 52 kt 60 mph | 6.07 mi NNE of Herrick | Thunderstorm wind gusts were measured on a personal weather station 6 miles north-northeast of Herrick. |
| 2023-07-12 02:28 | Wind | 63 kt 72 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts as high as 72 mph were measured by South Dakota Road Weather Information System site SD588 1 mile southwest of Pickstown. |
| 2022-07-05 13:10 | Wind | 55 kt 63 mph | .69 mi S of Fairfax | A thunderstorm wind gust of 63 mph was measured by personal weather station E7290 1 mile west-southwest of Fairfax. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2022-07-05 13:24 | Wind | 58 kt 67 mph | 3.67 mi NE of Ft Randall | A thunderstorm wind gusts of 67 mph was measured by South Dakota Road Weather Information System site SD588 2 miles west-southwest of Pickstown. |
| 2022-06-25 00:12 | Hail | 1" quarter | .69 mi N of Bonesteel | No narrative filed · source: Trained Spotter |
| 2022-06-25 00:40 | Hail | 1" quarter | 4.1 mi W of Ft Randall | No narrative filed · source: Public |
| 2022-06-25 00:40 | Hail | 2" hen egg | 2.45 mi NW of Ft Randall | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2022-06-12 23:06 | Wind | 50 kt 58 mph | 2.12 mi ENE of Dixon | A thunderstorm wind gust of 58 mph was measured by South Dakota Road Weather Information System site SD589 2 miles east of Dixon. |
| 2022-05-30 13:05 | Wind | 62 kt 71 mph | 3.67 mi NE of Ft Randall | A thunderstorm wind gust of 71 mph was measured by South Dakota Road Weather Information System site SD588 2 mile west-southwest of Pickstown. |
| 2022-05-29 22:48 | Wind | 56 kt 64 mph | .69 mi N of Bonesteel | Thunderstorm winds downed a one-foot diameter tree limb, along with several other smaller limbs. |
| 2022-05-12 14:30 | Wind | 52 kt 60 mph | .69 mi N of Bonesteel | Thunderstorm winds downed numerous three-inch branches. |
| 2021-09-16 21:27 | Hail | 1.25" half dollar | 4.03 mi W of Herrick | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2021-09-16 21:27 | Hail | 0.75" penny | 0 mi N of Burke | Hail was accompanied by strong wind, but there was no damage. |
| 2021-09-16 22:16 | Wind | 70 kt 81 mph | 3.67 mi NE of Ft Randall | Thunderstorm wind gusts were measured by South Dakota RWIS site SD588 3 miles southwest of Pickstown. |
| 2021-06-23 18:20 | Hail | 0.88" nickel | 0 mi N of Gregory | No narrative filed · source: Trained Spotter |
| 2021-06-23 18:20 | Hail | 0.75" penny | .69 mi N of Gregory | No narrative filed · source: Trained Spotter |
| 2021-06-23 18:30 | Hail | 1" quarter | .5 mi E of Burke | No narrative filed · source: Law Enforcement |
| 2021-06-23 19:14 | Wind | 55 kt 63 mph | 4.49 mi NE of Ft Randall | Thunderstorms winds were measured by a South Dakota Road Weather Information System site at Fort Randall Dam. |
| 2020-08-10 03:33 | Hail | 2" hen egg | 0 mi N of Gregory | No narrative filed · source: Public |
| 2020-08-10 03:54 | Hail | 1.25" half dollar | 3.49 mi N of Burke Muni Arpt | No narrative filed · source: Social Media |
| 2020-08-10 03:54 | Hail | 1" quarter | 5.74 mi ENE of Lucas | No narrative filed · source: Public |
| 2020-08-10 03:58 | Hail | 1" quarter | 1.71 mi NW of Burke Muni Arpt | No narrative filed · source: Trained Spotter |
| 2020-08-10 04:16 | Wind | 63 kt 72 mph | .69 mi S of Fairfax | Personal weather station EW7290 near Fairfax measured a peak wind gust of 73 mph. |
| 2020-08-10 04:37 | Wind | 53 kt 61 mph | 3.67 mi NE of Ft Randall | South Dakota RWIS station SD588 near Fort Randall Dam measured a peak wind gust of 61 mph. |
| 2020-08-08 23:14 | Wind | 52 kt 60 mph | 4.49 mi NE of Ft Randall | South Dakota RWIS site SD588 measured a peak wind of 60 mph. |
| 2020-07-08 20:00 | Wind | 59 kt 68 mph | 3.67 mi NE of Ft Randall | South Dakota RWIS station SD588 near Fort Randall Dam measured a wind gust to 68 mph. |
| 2020-07-07 00:40 | Wind | 56 kt 64 mph | 3.67 mi NE of Ft Randall | South Dakota RWIS station SD588 near Fort Randall Dam measured a peak wind gust of 64 mph. |
| 2020-07-03 00:27 | Wind | 53 kt 61 mph | 3.67 mi NE of Ft Randall | South Dakota RWIS SD588 near Fort Randall Dam measured a wind gust to 61 mph. |
| 2020-06-30 21:50 | Hail | 1" quarter | 4 mi SSW of St Charles | No narrative filed · source: Public |
| 2020-06-20 18:30 | Hail | 2.75" baseball | 7.67 mi N of Lucas | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2020-06-20 18:37 | Hail | 2" hen egg | 5.88 mi NNE of Lucas | No narrative filed · source: Public |
| 2020-06-20 18:39 | Hail | 1.75" golf ball | 7.75 mi NNW of Lucas | Hail damaged several cars. Property damage costs are rough estimates. |
| 2020-06-20 19:39 | Hail | 1" quarter | 4.99 mi ENE of Bonesteel | No narrative filed · source: Public |
| 2020-06-20 20:18 | Hail | 1.75" golf ball | .86 mi SE of Ft Randall | No narrative filed · source: Public |
| 2020-06-20 20:45 | Hail | 1" quarter | 5.6 mi W of Ft Randall | Hail of various size covered the ground. |
| 2019-08-17 18:14 | Hail | 1.5" ping pong | 6.3 mi N of Dixon | No narrative filed · source: Trained Spotter |
| 2019-08-16 21:16 | Hail | 0.88" nickel | 3.45 mi S of Burke | No narrative filed · source: Public |
| 2019-08-09 18:00 | Wind | 56 kt 64 mph | .69 mi N of Dallas | A few trees were knocked down around town. |
| 2019-08-09 18:10 | Wind | 53 kt 61 mph | 0 mi N of Gregory Arpt | No narrative filed · source: AWOS |
| 2019-08-06 21:10 | Hail | 2.75" baseball | 7.19 mi NNE of Dixon | Hail destroyed a car windshield and headlights. |
| 2019-08-06 21:18 | Wind | 61 kt 70 mph | 2.3 mi NNE of Burke | Thunderstorm winds flattened corn, laying to the southwest. |
| 2019-08-06 21:20 | Wind | 88 kt 101 mph | 2.07 mi N of Burke Muni Arpt | Wooden power poles broken off by thunderstorm winds. A large area of 80 to 100 mile per hour winds accompanied the tornadic development. |
| 2019-08-06 21:22 | Wind | 64 kt 74 mph | 0 mi N of Gregory Arpt | No narrative filed · source: AWOS |
| 2019-08-06 21:24 | Hail | 1.75" golf ball | 2.19 mi N of Lucas | Significant crop damage caused by wind-driven hail. |
| 2019-08-06 21:28 | Wind | 83 kt 96 mph | .63 mi ESE of Burke | A metal building was destroyed by strong thunderstorm winds. |
| 2019-08-06 21:30 | Wind | 61 kt 70 mph | .5 mi E of Burke | Winds downed at least six large pine, spruce and cedar trees. |
| 2019-08-06 21:30 | Wind | 65 kt 75 mph | .5 mi E of Burke | Numerous large branches were brought down on power transmission lines in the city of Burke. |
| 2019-08-06 22:18 | Hail | 0.75" penny | 7.88 mi ESE of Carlock | No narrative filed · source: Trained Spotter |
| 2019-07-09 19:18 | Hail | 0.75" penny | 5.07 mi SSW of Dixon | No narrative filed · source: Public |
| 2019-07-09 19:18 | Wind | 56 kt 64 mph | 5.07 mi SSW of Dixon | Twelve foot length of a six inch diameter branch broken off a tree. |
| 2019-07-09 19:20 | Hail | 0.75" penny | 3.32 mi NNE of Dallas | No narrative filed · source: Public |
| 2019-06-30 15:27 | Hail | 1.75" golf ball | 2.61 mi WNW of Lucas | No narrative filed · source: Public |
| 2019-06-30 16:30 | Hail | 2" hen egg | 10.13 mi NNW of Lucas | Occasional stones from 2 to 2.5 inches diameter. |
| 2019-06-30 17:20 | Hail | 1" quarter | 2.44 mi SW of Dixon | No narrative filed · source: Public |
| 2019-06-30 20:35 | Wind | 52 kt 60 mph | 0 mi N of Gregory Arpt | No narrative filed · source: AWOS |
| 2019-06-19 17:44 | Hail | 1" quarter | 2.04 mi NW of Dixon | Quarter size hail, along with a lot of smaller hail, covered the ground. |
| 2019-06-04 18:39 | Hail | 1.75" golf ball | 3.54 mi E of Ft Randall | No narrative filed · source: COOP Observer |
| 2018-06-24 15:50 | Wind | 56 kt 64 mph | 0 mi N of Gregory Arpt | Large DCAPE values supported development of a strong cold pool with a thunderstorm, producing damaging winds measured at the K9D1 AWOS. |
| 2018-06-13 12:57 | Hail | 1" quarter | 4.86 mi N of Dallas | No narrative filed · source: Public |
| 2018-06-13 13:40 | Hail | 1" quarter | .69 mi S of Gregory | No narrative filed · source: Trained Spotter |
| 2018-06-01 17:00 | Wind | 61 kt 70 mph | .69 mi N of Gregory | Outflow winds from thunderstorms downed several mature trees in Gregory. |
| 2017-09-19 20:15 | Hail | 1.25" half dollar | 7.42 mi ESE of Carlock | Hail size varied from quarters to half dollars. |
| 2017-07-19 15:15 | Hail | 1" quarter | 2.89 mi SW of Gregory | No narrative filed · source: Public |
| 2017-07-11 18:52 | Wind | 52 kt 60 mph | 5.45 mi NE of St Charles | Three to four inch diameter branches were downed. |
| 2017-07-09 16:52 | Wind | 63 kt 72 mph | .69 mi S of Fairfax | Measured at CWOP station E7290. |
| 2017-07-09 16:55 | Wind | 56 kt 64 mph | 1.22 mi SE of Fairfax | Four to six inch diameter tree branches downed. |
| 2017-07-09 17:05 | Wind | 56 kt 64 mph | 1.52 mi E of Fairfax | Grain bin damaged and outbuildings. |
| 2017-06-13 14:45 | Hail | 1.5" ping pong | .5 mi E of Burke | No narrative filed · source: Fire Department/Rescue |
| 2017-06-13 15:35 | Hail | 1.25" half dollar | 8.99 mi ESE of Carlock | No narrative filed · source: Public |
| 2016-06-17 21:58 | Hail | 1" quarter | 2.13 mi NNE of Carlock | No narrative filed · source: Public |
| 2016-05-25 17:39 | Hail | 1" quarter | 1.22 mi SE of St Charles | No narrative filed · source: Trained Spotter |
| 2016-05-25 18:10 | Hail | 1" quarter | .69 mi N of Bonesteel | No narrative filed · source: Trained Spotter |
| 2016-05-25 18:45 | Hail | 1.75" golf ball | 4.49 mi NE of Ft Randall | No narrative filed · source: CoCoRaHS |
| 2016-05-22 20:20 | Hail | 1" quarter | 2.6 mi ENE of Dixon | No narrative filed · source: Public |
| 2015-09-07 21:25 | Hail | 1" quarter | 4.98 mi WNW of Lucas | Quarter size hail was accompanied by gusts estimated at 50 mph. |
| 2015-08-18 03:35 | Wind | 52 kt 60 mph | .5 mi W of Gregory | No narrative filed · source: Mesonet |
| 2015-08-06 15:09 | Wind | 61 kt 70 mph | 4.15 mi S of Burke | Thunderstorm winds blew deck furniture across a yard and caused tree damage. |
| 2015-07-28 00:52 | Hail | 0.88" nickel | 1.22 mi SW of Bonesteel | No narrative filed · source: Public |
| 2015-07-05 20:21 | Wind | 52 kt 60 mph | 2.12 mi ENE of Dixon | Thunderstorm winds caused tree damage, including branches blown down. |
| 2015-06-20 00:49 | Wind | 52 kt 60 mph | 7.54 mi NNE of Lucas | Thunderstorm winds caused tree damage. |
| 2013-06-21 22:05 | Wind | 52 kt 60 mph | .5 mi E of Burke | Thunderstorm winds caused tree damage, including numerous limbs blown down. |
| 2013-06-03 21:18 | Hail | 1" quarter | 2.81 mi N of Burke Muni Arpt | No narrative filed · source: Public |
| 2013-06-03 21:18 | Hail | 0.75" penny | 2.76 mi N of Burke | No narrative filed · source: Public |
| 2013-06-03 21:20 | Hail | 0.88" nickel | 4.18 mi N of Burke | No narrative filed · source: Public |
| 2013-06-03 21:20 | Hail | 0.75" penny | 4.86 mi S of Lucas | No narrative filed · source: Public |
| 2012-05-05 05:40 | Hail | 0.75" penny | 6.3 mi N of Dixon | No narrative filed · source: Trained Spotter |
| 2012-05-01 14:55 | Hail | 0.75" penny | 3.1 mi WNW of Herrick | No narrative filed · source: Public |
| 2011-06-14 16:20 | Hail | 1" quarter | 6.64 mi SW of St Charles | No narrative filed · source: Public |
| 2011-03-20 01:09 | Hail | 1" quarter | .51 mi E of Fairfax | Quarter size hail produced a light accumulation. Winds were strong but not damaging. |
| 2010-08-30 16:20 | Wind | 61 kt 70 mph | 8.19 mi ESE of Carlock | Thunderstorm winds caused tree damage, including large branches blown down. |
| 2010-08-30 16:46 | Hail | 1" quarter | .5 mi W of Herrick | No narrative filed · source: Public |
| 2010-08-30 16:48 | Wind | 56 kt 64 mph | .5 mi W of Herrick | Thunderstorm winds caused tree damage, including up to 5 inch diameter branches blown down. The winds also blew a tin part of a roof off a house, and blew a hay bale across a road. |
| 2010-08-19 19:10 | Wind | 52 kt 60 mph | .51 mi E of Fairfax | Thunderstorm winds caused tree damage, including branches blown down. |
| 2010-07-17 16:58 | Hail | 2" hen egg | 2.81 mi S of Gregory Arpt | Large hail caused an unknown amount of damage to crops and vehicles. |
| 2010-06-03 17:34 | Hail | 1" quarter | .69 mi N of Bonesteel | No narrative filed · source: Public |
| 2010-06-01 07:30 | Hail | 1" quarter | .69 mi S of Dallas | Large hail was accompanied by very heavy rain. |
| 2010-05-29 18:39 | Hail | 1.5" ping pong | .85 mi SW of Dixon | No narrative filed · source: Public |
| 2010-05-29 18:41 | Hail | 1" quarter | 2.94 mi NNW of Dixon | No narrative filed · source: Public |
| 2010-05-29 19:12 | Wind | 52 kt 60 mph | .85 mi SW of Dixon | Thunderstorm winds caused tree damage, including several branches blown down. |
| 2010-05-24 14:07 | Hail | 1" quarter | .5 mi E of Burke | No narrative filed · source: Law Enforcement |
| 2010-05-24 14:15 | Hail | 1.5" ping pong | .85 mi NW of Lucas | Ping pong ball size hail was accompanied by winds which blew over a wooden swing set. |
| 2010-05-24 14:18 | Hail | 1.75" golf ball | 3.26 mi NE of Burke | No narrative filed · source: Law Enforcement |
| 2010-05-24 14:45 | Wind | 52 kt 60 mph | 0 mi N of Gregory | Damaging thunderstorm winds were accompanied by pea size hail. |
| 2010-05-24 19:14 | Wind | 52 kt 60 mph | 6.3 mi N of Dixon | Thunderstorm winds caused an unknown amount of tree damage. |
| 2010-05-24 19:40 | Wind | 52 kt 60 mph | 1.22 mi SE of St Charles | Thunderstorm winds caused tree damage. |
Worst storm days in Gregory County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2019-08-06 | 9 | 2.75" (baseball) | 101 mph |
| 2024-08-25 | 7 | 2.75" (baseball) | 85 mph |
| 2020-06-20 | 6 | 2.75" (baseball) | — |
| 2020-08-10 | 6 | 2" (hen egg) | 72 mph |
| 2010-05-24 | 6 | 1.75" (golf ball) | 60 mph |
| 2026-06-09 | 6 | — | 72 mph |
| 2025-07-15 | 5 | 1.25" (half dollar) | 71 mph |
| 2019-06-30 | 4 | 2" (hen egg) | 60 mph |
| 2026-05-17 | 4 | 1.25" (half dollar) | 78 mph |
| 2021-06-23 | 4 | 1" (quarter) | 63 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 |
|---|---|---|---|
| 2024-08-25 | 2.75" baseball | 3.49 mi S of Gregory Arpt | Considerable quarter to golf ball size hail fell, with a few stones up to baseball size. |
| 2024-07-31 | 2" hen egg | .5 mi W of Herrick | No narrative filed |
| 2024-07-28 | 2.75" baseball | 8.58 mi E of Lucas | Hail ranged from golf ball to baseball size. Multiple windshields were broken with large dents in vehicles and corn was stripped of most of its leaves. |
| 2022-06-25 | 2" hen egg | 2.45 mi NW of Ft Randall | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2020-08-10 | 2" hen egg | 0 mi N of Gregory | No narrative filed |
| 2020-06-20 | 2.75" baseball | 7.67 mi N of Lucas | Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture. |
| 2020-06-20 | 2" hen egg | 5.88 mi NNE of Lucas | No narrative filed |
| 2019-08-06 | 2.75" baseball | 7.19 mi NNE of Dixon | Hail destroyed a car windshield and headlights. |
When does hail hit Gregory County?
Across 16 years of records, June produced the most reports (51), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 0 | 0.0% |
| February | 0 | 0.0% |
| March | 1 | 0.6% |
| April | 0 | 0.0% |
| May | 23 | 14.9% |
| June | 51 | 33.1% |
| July | 33 | 21.4% |
| August | 41 | 26.6% |
| September | 5 | 3.2% |
| October | 0 | 0.0% |
| November | 0 | 0.0% |
| December | 0 | 0.0% |
Nearby counties in South Dakota
Pennington County (1,392)Meade County (831)Custer County (565)Harding County (461)Jackson County (429)Perkins County (405)Brown County (400)Oglala Lakota County (399)Butte County (394)Lawrence County (390)Fall River County (384)Minnehaha County (351)
See all 66 South Dakota counties →
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 46053). 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.