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Dewey County, SD hail & severe wind history
242 storm reports on file for Dewey County between 2010-04-28 and 2026-06-07 — 110 hail and 132 severe thunderstorm wind. That averages 14.2 reports a year, and Jul is the busiest month.
Hail reports
110
6.5 per year
Largest hail
4"
grapefruit size · 2022-07-05
Strongest gust
142 mph
123 kt · 2010-06-16
Reported damage
$0
property + crop, as filed
Storm days
106
distinct days with a report
Busiest year
2018
24 reports
Search every Dewey 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).
242 of 242 reports match — the table lists only the 200 most recent; pick a year or month to see older reports. The count and monthly chart cover all 242.
Reports by month for the current filter — the shape of Dewey County’s storm season.
| Date | Type | Size / gust | Nearest location | Report detail |
|---|---|---|---|---|
| 2026-06-07 22:14 | Wind | 56 kt 64 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2026-06-07 22:15 | Wind | 56 kt 64 mph | .48 mi W of Timber Lake Arpt | The South Dakota State University mesonet station one mile southwest of Timber Lake recorded a peak wind gust of 65 mph. |
| 2026-06-03 10:54 | Hail | 1" quarter | 11.89 mi NNW of Parade | Quarter-sized hail (1.00 inch) was observed three miles northeast of Green Grass. |
| 2026-06-03 11:26 | Hail | 1" quarter | 1.69 mi NE of Whitehorse | Quarter-sized hail (1.00 inch) fell two miles northeast of White Horse. |
| 2025-09-13 03:30 | Wind | 61 kt 70 mph | 1.2 mi SE of Parade | A wind gust of 70 mph was recorded by the South Dakota State University Mesonet station 1 mile east-southeast of Parade. |
| 2025-08-18 15:20 | Wind | 51 kt 59 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2025-08-18 15:22 | Wind | 52 kt 60 mph | 0 mi N of Lantry | A trained spotter reported damage to their flags by an estimated 60 mph wind gust. |
| 2025-08-18 16:21 | Wind | 54 kt 62 mph | 13.97 mi SSE of Eagle Butte | A peak measured gust of 62 mph was recorded on a personal weather station 14 miles south of Parade. |
| 2025-08-17 01:50 | Wind | 54 kt 62 mph | 1.38 mi N of La Plant | No narrative filed · source: Mesonet |
| 2025-07-26 17:30 | Hail | 1.5" ping pong | 1.46 mi W of Promise | Ping-Pong ball-sized hail was reported. |
| 2025-07-23 03:40 | Wind | 50 kt 58 mph | 14.71 mi S of Parade | No narrative filed · source: Mesonet |
| 2025-07-23 04:15 | Wind | 53 kt 61 mph | 1.38 mi N of La Plant | No narrative filed · source: Mesonet |
| 2025-07-21 20:45 | Wind | 63 kt 72 mph | 2.01 mi NW of Bear Creek | A peak wind gust of 73 mph was recorded at the South Dakota State University mesonet station six miles north-northwest of Lantry. |
| 2025-07-20 22:40 | Wind | 52 kt 60 mph | .48 mi E of Glencross | A trained spotter estimated winds up to 60 mph caused minor crop damage. |
| 2025-07-14 17:50 | Hail | 1" quarter | .48 mi W of Timber Lake | No narrative filed · source: COOP Observer |
| 2025-07-14 18:45 | Wind | 52 kt 60 mph | .48 mi W of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2025-07-14 18:51 | Wind | 61 kt 70 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2025-07-09 16:13 | Wind | 55 kt 63 mph | 4.4 mi NNE of Eagle Butte | No narrative filed · source: Mesonet |
| 2025-07-09 16:30 | Wind | 51 kt 59 mph | .48 mi W of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2025-07-09 17:00 | Wind | 55 kt 63 mph | 1.38 mi N of La Plant | No narrative filed · source: Mesonet |
| 2025-06-16 00:40 | Wind | 55 kt 63 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2025-06-15 02:15 | Hail | 1" quarter | .48 mi E of Glencross | No narrative filed · source: Trained Spotter |
| 2024-08-21 20:20 | Wind | 52 kt 60 mph | 12.75 mi SSE of Thatcher | Thunderstorm winds resulted in a power outage that persisted through the early morning the next day. |
| 2024-07-29 16:55 | Hail | 0.88" nickel | 11.28 mi NE of Bear Creek | No narrative filed · source: Public |
| 2024-07-13 22:20 | Wind | 56 kt 64 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2024-07-13 22:20 | Wind | 70 kt 81 mph | 1.69 mi SW of Bear Creek | A public caller stated that thunderstorm wind gusts uprooted trees. |
| 2024-07-13 22:46 | Wind | 61 kt 70 mph | 2.54 mi ENE of Lantry | The public reported thunderstorm wind damage in the form of 3 inch diameter limbs broken off trees in addition to several power poles that had also snapped. |
| 2024-07-13 22:52 | Wind | 56 kt 64 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2024-06-27 19:38 | Wind | 50 kt 58 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Public |
| 2024-06-27 20:00 | Wind | 56 kt 64 mph | .48 mi W of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2024-06-07 17:57 | Hail | 1" quarter | .69 mi S of Timber Lake Arpt | No narrative filed · source: Public |
| 2024-06-07 17:57 | Wind | 52 kt 60 mph | .69 mi S of Timber Lake Arpt | The Timber lake airport attendant reported no noticeable damage associated with estimated 60 mph winds. |
| 2024-05-19 16:48 | Hail | 1" quarter | 1.61 mi ESE of Whitehorse | No narrative filed · source: Public |
| 2024-05-19 17:24 | Hail | 1" quarter | 1.61 mi ESE of Whitehorse | No narrative filed · source: Public |
| 2024-05-17 17:40 | Wind | 56 kt 64 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2023-07-30 08:52 | Hail | 1" quarter | .48 mi E of Glencross | No narrative filed · source: Public |
| 2023-06-23 22:35 | Wind | 52 kt 60 mph | .85 mi NE of Ridgeview Jewett Arp | A South Dakota Department of Transportation weather station recorded a wind gust of 60 mph. |
| 2023-06-20 15:03 | Wind | 55 kt 63 mph | 1 mi NE of Ridgeview | The South Dakota Department of Transportation weather station a mile northeast of Ridgeview recorded a wind gust of 63 mph. |
| 2023-06-20 16:56 | Hail | 1" quarter | 2 mi S of Promise | No narrative filed · source: Public |
| 2023-06-20 18:52 | Hail | 1" quarter | 2 mi WNW of Promise | No narrative filed · source: Public |
| 2022-07-21 18:18 | Hail | 1" quarter | 2.53 mi ENE of La Plant | No narrative filed · source: Public |
| 2022-07-05 07:15 | Wind | 65 kt 75 mph | 4.84 mi N of Isabel | A trained spotter reported extensive damage north of Isabel. There was damage to trees, some uprooted, and damaged siding and broken windows on a house and vehicles. In addition, a machine shed and grain bins were destroyed. Some areas had complete crop loss. |
| 2022-07-05 07:20 | Hail | 2.5" tennis ball | 3.68 mi NE of Firesteel | A trained spotter estimated 70 to 80 mph winds. The wind and large hail broke skylights on the house. In addition, a fence was damaged, along with tree branches down. |
| 2022-07-05 07:37 | Hail | 4" grapefruit | 2.07 mi N of Timber Lake | No narrative filed · source: Public |
| 2022-07-05 07:40 | Wind | 73 kt 84 mph | 0 mi N of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2022-07-05 07:55 | Hail | 1.75" golf ball | 1.69 mi SE of Glencross | No narrative filed · source: Trained Spotter |
| 2022-07-05 08:13 | Hail | 4" grapefruit | 0 mi N of Promise | No narrative filed · source: Public |
| 2022-07-05 08:31 | Wind | 54 kt 62 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2022-06-24 14:03 | Hail | 1" quarter | 3.01 mi WNW of Thatcher | No narrative filed · source: Public |
| 2022-06-24 14:17 | Hail | 1.25" half dollar | 1.62 mi ENE of Thatcher | No narrative filed · source: Public |
| 2022-06-24 17:45 | Hail | 0.88" nickel | 5.36 mi SE of Moreau | No narrative filed · source: Public |
| 2022-06-23 19:00 | Hail | 1.75" golf ball | 5.42 mi SSW of Thatcher | In addition to the hail, 50 to 60 mph wind gusts were estimated to have occurred. |
| 2022-06-20 10:30 | Wind | 52 kt 60 mph | 2.39 mi NE of Lantry | Nickel hail was observed in addition to the severe wind. |
| 2022-06-20 10:34 | Wind | 52 kt 60 mph | 2.44 mi E of Lantry | This report came from mPING, and indicated that one inch tree limbs were broken and/or shingles were blown off. |
| 2022-06-20 17:30 | Wind | 50 kt 58 mph | .48 mi W of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2022-06-14 00:30 | Wind | 52 kt 60 mph | 10.39 mi WSW of Cheyenne Agency | Location is approximate, and time is estimated via radar. |
| 2022-06-14 00:45 | Wind | 52 kt 60 mph | 7.58 mi WNW of Cheyenne Agency | Winds were estimated at 60 mph or stronger. |
| 2022-05-12 01:50 | Wind | 60 kt 69 mph | .48 mi W of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2022-05-12 02:39 | Hail | 1" quarter | 2.54 mi ENE of Lantry | No narrative filed · source: Public |
| 2022-04-22 19:10 | Hail | 1.5" ping pong | 1.47 mi E of Thatcher | No narrative filed · source: Public |
| 2022-04-22 19:25 | Hail | 2" hen egg | 1.69 mi SW of Ridgeview | The large hail broke vehicle and house windows. |
| 2021-09-19 20:10 | Hail | 1.25" half dollar | .69 mi N of Isabel | Quarter to half dollar hailstones lasted a couple minutes and produced minor damage to a home. |
| 2021-08-23 17:13 | Hail | 1" quarter | 2.44 mi E of Lantry | No narrative filed · source: Public |
| 2021-08-23 17:19 | Hail | 1.25" half dollar | 2.44 mi E of Lantry | No narrative filed · source: Public |
| 2021-08-23 19:46 | Wind | 55 kt 63 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2021-08-23 19:47 | Hail | 1" quarter | 2.07 mi N of Timber Lake | No narrative filed · source: Public |
| 2021-08-23 20:08 | Wind | 56 kt 64 mph | 3.88 mi W of Trail City | No narrative filed · source: Mesonet |
| 2021-08-14 18:40 | Hail | 1.5" ping pong | 5.85 mi E of La Plant | No narrative filed · source: Public |
| 2021-07-08 20:50 | Hail | 1" quarter | .69 mi S of Lantry | No narrative filed · source: Public |
| 2021-07-08 22:40 | Hail | 1.75" golf ball | .97 mi E of Firesteel | No narrative filed · source: Law Enforcement |
| 2021-07-03 16:40 | Hail | 1" quarter | 2.52 mi ESE of Moreau | A storm produced hail for nearly 30 minutes with large hail to quarter size occurring at the end of the storm. |
| 2021-06-08 15:18 | Hail | 1.75" golf ball | 1.46 mi NNW of Firesteel | No narrative filed · source: Public |
| 2021-06-08 16:00 | Hail | 1" quarter | 1.46 mi NNW of Firesteel | No narrative filed · source: Public |
| 2021-06-08 17:19 | Wind | 50 kt 58 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2021-06-08 17:39 | Wind | 56 kt 64 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2021-06-08 17:49 | Hail | 1" quarter | 0 mi N of Timber Lake | No narrative filed · source: Trained Spotter |
| 2021-06-08 17:54 | Wind | 63 kt 72 mph | 0 mi N of Timber Lake | No narrative filed · source: Mesonet |
| 2021-06-08 18:39 | Wind | 50 kt 58 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2021-05-23 18:15 | Wind | 52 kt 60 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2020-08-26 14:02 | Hail | 1.25" half dollar | .98 mi W of Eagle Butte | No narrative filed · source: Trained Spotter |
| 2020-08-26 14:06 | Hail | 1.75" golf ball | .49 mi W of Eagle Butte | No narrative filed · source: Trained Spotter |
| 2020-08-26 14:30 | Hail | 1.75" golf ball | 4.53 mi NW of Parade | No narrative filed · source: Public |
| 2020-08-26 15:25 | Hail | 0.88" nickel | 6.04 mi SSE of Isabel | No narrative filed · source: Public |
| 2020-08-26 15:58 | Hail | 1" quarter | 5.39 mi E of Whitehorse | No narrative filed · source: Public |
| 2020-08-26 16:13 | Hail | 1.75" golf ball | 0 mi N of Timber Lake | No narrative filed · source: Public |
| 2020-08-26 16:13 | Wind | 52 kt 60 mph | .48 mi W of Timber Lake | Sixty mph winds were estimated. |
| 2020-08-26 16:17 | Hail | 2" hen egg | 0 mi N of Timber Lake | No narrative filed · source: Public |
| 2020-08-26 16:20 | Hail | 2" hen egg | .69 mi N of Timber Lake | No narrative filed · source: Public |
| 2020-07-31 16:02 | Wind | 52 kt 60 mph | 6.4 mi NW of Cheyenne Agency | Sixty mph winds were estimated. |
| 2020-07-22 06:00 | Hail | 0.88" nickel | 6.25 mi SSW of Timber Lake Arpt | No narrative filed · source: Public |
| 2020-07-02 17:16 | Wind | 52 kt 60 mph | .69 mi S of Parade | Sixty mph winds were estimated. |
| 2020-06-06 19:56 | Wind | 52 kt 60 mph | 2.44 mi E of Lantry | Estimated sixty mph winds brought some tree limbs down and took some shingles off the house. |
| 2020-06-06 19:56 | Wind | 82 kt 94 mph | .85 mi SE of Lantry | A wind gust of 94 mph brought down many large tree branches. |
| 2020-06-06 20:20 | Wind | 70 kt 81 mph | .69 mi S of Firesteel | Eighty mph winds were estimated by a storm chaser. |
| 2020-06-06 20:37 | Wind | 61 kt 70 mph | .98 mi E of Cheyenne Agency | No narrative filed · source: Storm Chaser |
| 2019-08-09 12:36 | Hail | 1" quarter | 19.76 mi SW of Cheyenne Agency | No narrative filed · source: Public |
| 2019-08-06 15:04 | Wind | 51 kt 59 mph | 3.88 mi W of Trail City | No narrative filed · source: Mesonet |
| 2019-08-06 15:26 | Hail | 1.75" golf ball | 5.81 mi E of Trail City | A severe thunderstorm with large hail and destructive winds left southeast Corson and continued southeast across eastern Dewey county destroying crop and grassland in its path. The storm then entered western Potter county. |
| 2019-07-20 00:10 | Wind | 52 kt 60 mph | 12.59 mi S of Firesteel | A few tree limbs were downed by estimated sixty mph winds. |
| 2019-07-20 00:48 | Wind | 63 kt 72 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2019-07-20 01:05 | Hail | 1" quarter | 3.9 mi E of La Plant | No narrative filed · source: Public |
| 2019-07-19 03:22 | Wind | 56 kt 64 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2019-07-19 03:38 | Wind | 51 kt 59 mph | 3.69 mi NE of Eagle Butte | No narrative filed · source: Mesonet |
| 2019-07-19 04:04 | Wind | 56 kt 64 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2018-07-19 19:02 | Hail | 1" quarter | 2.07 mi N of Timber Lake | No narrative filed · source: Fire Department/Rescue |
| 2018-07-19 19:08 | Wind | 52 kt 60 mph | .69 mi N of Timber Lake | Sixty mph winds were estimated. |
| 2018-07-19 19:32 | Hail | 1" quarter | 2.92 mi E of Whitehorse | No narrative filed · source: Public |
| 2018-07-03 23:04 | Wind | 78 kt 90 mph | .49 mi W of Eagle Butte | Estimated ninety mph winds destroyed an empty trailer along with tipping another one over. A delivery truck was also tipped over and a mobile home was destroyed. A couple buildings had parts of their roofs blown off with many trees damaged or uprooted. Some power lines were also downed. |
| 2018-07-03 23:09 | Wind | 61 kt 70 mph | 3.59 mi NNE of Eagle Butte | No narrative filed · source: Mesonet |
| 2018-07-03 23:27 | Wind | 61 kt 70 mph | 1.69 mi NE of La Plant | Estimated seventy mph winds downed many large tree branches. |
| 2018-06-27 00:15 | Wind | 52 kt 60 mph | 8.64 mi NNW of Parade | Sixty mph winds were estimated. |
| 2018-06-27 01:10 | Hail | 1.5" ping pong | 9.87 mi SE of Thatcher | Large hail and damaging winds destroyed many acres of crops and pastureland as a severe thunderstorm moved southeast out of Dewey into northwest Sully county. |
| 2018-06-16 06:30 | Hail | 1" quarter | 1.46 mi W of Isabel | No narrative filed · source: Public |
| 2018-06-16 06:36 | Hail | 0.75" penny | .84 mi NE of Isabel | Hail covered the ground up to 2 inches in spots. |
| 2018-06-16 07:05 | Hail | 1.25" half dollar | 3.68 mi NE of Firesteel | No narrative filed · source: Public |
| 2018-06-14 20:57 | Wind | 52 kt 60 mph | 4.85 mi SE of Moreau | An estimated sixty mph wind blew down an old leaning house. |
| 2018-06-10 22:20 | Hail | 1" quarter | 2.06 mi ESE of Moreau | No narrative filed · source: Trained Spotter |
| 2018-06-05 19:45 | Wind | 70 kt 81 mph | .69 mi N of Eagle Butte | Estimated eighty mph winds tipped a mobile home over. |
| 2018-06-05 20:13 | Wind | 63 kt 72 mph | .85 mi SE of Bear Creek | No narrative filed · source: Mesonet |
| 2018-06-05 20:26 | Hail | 1" quarter | .49 mi W of Eagle Butte | No narrative filed · source: Trained Spotter |
| 2018-06-05 20:26 | Wind | 52 kt 60 mph | .49 mi W of Eagle Butte | Sixty mph winds were estimated. |
| 2018-06-05 20:35 | Hail | 1.25" half dollar | .49 mi W of Eagle Butte | No narrative filed · source: Law Enforcement |
| 2018-06-05 20:51 | Wind | 54 kt 62 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2018-06-05 20:51 | Wind | 52 kt 60 mph | 3.88 mi W of Trail City | No narrative filed · source: Mesonet |
| 2018-06-01 15:10 | Hail | 2.25" tennis ball | 2.81 mi S of Timber Lake Arpt | No narrative filed · source: Public |
| 2018-06-01 15:20 | Hail | 1.75" golf ball | 2.38 mi SW of Glencross | No narrative filed · source: Law Enforcement |
| 2018-05-17 17:04 | Wind | 54 kt 62 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2018-05-17 18:04 | Wind | 51 kt 59 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2017-08-21 03:45 | Hail | 1.75" golf ball | 7.59 mi ESE of Thatcher | No narrative filed · source: Public |
| 2017-08-12 18:33 | Wind | 52 kt 60 mph | .85 mi NE of Ridgeview Jewett Arp | No narrative filed · source: Mesonet |
| 2017-07-29 16:35 | Wind | 61 kt 70 mph | 14.13 mi SE of Thatcher | Seventy mph winds were estimated. |
| 2017-07-20 19:00 | Wind | 61 kt 70 mph | 6.22 mi N of Isabel | Estimated seventy mph winds brought down several large branches. |
| 2017-07-05 17:22 | Wind | 56 kt 64 mph | 4.26 mi NNE of Eagle Butte | No narrative filed · source: Mesonet |
| 2016-08-14 17:12 | Wind | 51 kt 59 mph | 1.2 mi SW of Bear Creek | No narrative filed · source: Mesonet |
| 2016-08-14 17:13 | Wind | 52 kt 60 mph | 11.84 mi NE of Bear Creek | Sixty mph winds were estimated. |
| 2016-08-14 18:01 | Wind | 52 kt 60 mph | 0 mi N of Ridgeview | Sixty mph winds were estimated. |
| 2016-08-09 21:40 | Wind | 54 kt 62 mph | 3.88 mi W of Trail City | No narrative filed · source: Mesonet |
| 2016-08-09 22:05 | Wind | 52 kt 60 mph | 1.94 mi E of Firesteel | Sixty mph winds were estimated. |
| 2016-07-23 05:00 | Wind | 52 kt 60 mph | 9.99 mi WSW of Cheyenne Agency | Sixty mph winds were estimated. |
| 2016-07-22 14:58 | Hail | 2.5" tennis ball | 1.38 mi N of Isabel | No narrative filed · source: Public |
| 2016-07-22 15:10 | Hail | 1.5" ping pong | 1.38 mi N of Isabel | No narrative filed · source: Trained Spotter |
| 2016-07-22 15:45 | Hail | 1" quarter | 0 mi N of Firesteel | No narrative filed · source: Trained Spotter |
| 2016-07-22 15:51 | Hail | 1.75" golf ball | 0 mi N of Firesteel | No narrative filed · source: Trained Spotter |
| 2016-07-22 15:53 | Hail | 2.25" tennis ball | 0 mi N of Firesteel | No narrative filed · source: Storm Chaser |
| 2016-07-22 16:07 | Hail | 1.75" golf ball | 2.91 mi E of Firesteel | Golf ball size hail broke some vehicle windshields. |
| 2016-07-22 16:10 | Hail | 2.5" tennis ball | 8.14 mi SSE of Firesteel | No narrative filed · source: Public |
| 2016-07-22 16:24 | Hail | 1" quarter | 6.25 mi SSE of Firesteel | No narrative filed · source: Trained Spotter |
| 2016-07-22 16:29 | Hail | 1.75" golf ball | 8.14 mi SSE of Firesteel | No narrative filed · source: Trained Spotter |
| 2016-07-22 17:45 | Hail | 1.5" ping pong | 7.98 mi SSE of Firesteel | No narrative filed · source: Public |
| 2016-07-16 09:35 | Hail | 0.88" nickel | 1.47 mi W of Eagle Butte | No narrative filed · source: Public |
| 2016-07-16 09:40 | Hail | 0.75" penny | .49 mi W of Eagle Butte | No narrative filed · source: Public |
| 2016-07-16 09:50 | Hail | 1" quarter | 3.24 mi ENE of Eagle Butte | No narrative filed · source: Public |
| 2016-07-16 19:08 | Wind | 56 kt 64 mph | 2.91 mi E of Firesteel | Sixty-five mph winds were estimated. |
| 2016-07-16 19:28 | Wind | 52 kt 60 mph | 3.88 mi W of Trail City | No narrative filed · source: Mesonet |
| 2016-07-16 19:38 | Wind | 62 kt 71 mph | 3.88 mi W of Trail City | No narrative filed · source: Mesonet |
| 2016-05-30 15:30 | Wind | 52 kt 60 mph | 4.4 mi NNW of Ridgeview | Sixty mph winds were estimated. |
| 2015-07-27 20:20 | Wind | 52 kt 60 mph | 0 mi N of Trail City | Sixty mph winds were estimated. |
| 2015-07-24 22:23 | Wind | 70 kt 81 mph | 1.47 mi NNW of Parade | Eighty mph winds downed several cottonwood and ash trees. |
| 2015-07-24 22:45 | Hail | 1" quarter | 1.19 mi NW of La Plant | No narrative filed · source: Public |
| 2015-07-04 17:00 | Hail | 1" quarter | 2.81 mi S of Timber Lake Arpt | No narrative filed · source: Law Enforcement |
| 2015-07-04 18:03 | Hail | 1.25" half dollar | 10.47 mi N of Parade | No narrative filed · source: Public |
| 2015-07-04 18:30 | Hail | 1.75" golf ball | 4.4 mi NNE of Parade | No narrative filed · source: Public |
| 2015-07-04 19:23 | Hail | 1.75" golf ball | 15.31 mi SSW of Thatcher | Golfball size hail damaged a car windshield. |
| 2015-06-21 23:35 | Wind | 52 kt 60 mph | 6.32 mi W of Whitehorse | Sixty mph winds were estimated. |
| 2015-06-14 03:50 | Wind | 52 kt 60 mph | 4.61 mi WNW of Eagle Butte | Sixty mph winds downed several tree branches along with knocking a grill off the deck. |
| 2015-06-14 04:05 | Wind | 50 kt 58 mph | 6.39 mi NNE of Eagle Butte | Sixty mph winds were estimated by the public. |
| 2014-09-19 00:18 | Hail | 1" quarter | 2.99 mi WSW of Trail City | Large hail and strong winds damaged some corn and beans. |
| 2014-08-20 19:15 | Wind | 52 kt 60 mph | 2.07 mi S of Trail City | Sixty mph winds were estimated by the public. |
| 2014-08-20 20:00 | Wind | 52 kt 60 mph | 1.19 mi NE of La Plant | Sixty mph winds were estimated by the public. |
| 2014-07-24 21:35 | Hail | 0.88" nickel | 13.57 mi SSE of La Plant | No narrative filed · source: Public |
| 2014-06-21 18:01 | Hail | 1" quarter | 5.41 mi SSE of Moreau | No narrative filed · source: Public |
| 2014-06-18 06:44 | Hail | 1" quarter | 9.61 mi SE of Thatcher | No narrative filed · source: Public |
| 2014-06-18 07:15 | Hail | 1" quarter | 6.77 mi SE of Thatcher | No narrative filed · source: Public |
| 2014-06-13 19:25 | Wind | 52 kt 60 mph | .49 mi E of Lantry | Sixty mph winds were estimated by the public. |
| 2013-09-18 17:13 | Wind | 56 kt 64 mph | 2.07 mi S of Firesteel | Law enforcement estimated 60 to 65 mph wind gusts. |
| 2013-09-18 17:41 | Hail | 1" quarter | 12.75 mi SSE of Thatcher | No narrative filed · source: Public |
| 2013-09-18 18:00 | Wind | 52 kt 60 mph | 2.29 mi NNW of Promise | An estimated 60 mph wind gust was reported by the public. |
| 2013-09-18 18:00 | Wind | 61 kt 70 mph | 12.78 mi SSE of La Plant | An estimated 70 mph wind brought down a few branches. |
| 2013-09-08 23:20 | Wind | 52 kt 60 mph | 5.98 mi NW of Cheyenne Agency | Wind gusts to around 60 mph brought down small branches. |
| 2013-08-27 21:00 | Hail | 1" quarter | 1.61 mi ESE of Isabel | No narrative filed · source: Public |
| 2013-08-27 22:15 | Hail | 1" quarter | 3.45 mi S of Firesteel | No narrative filed · source: Trained Spotter |
| 2013-08-27 22:50 | Wind | 52 kt 60 mph | 6.04 mi SSE of Glencross | Sixty mph winds were estimated. |
| 2013-08-25 17:52 | Wind | 70 kt 81 mph | 3.22 mi ESE of Glencross | Eighty mph winds knocked over several trees. |
| 2013-08-25 18:00 | Wind | 52 kt 60 mph | 4.83 mi ESE of Glencross | Sixty mph winds were estimated. |
| 2013-08-25 18:35 | Wind | 52 kt 60 mph | 6.34 mi E of Trail City | Sixty mph winds were estimated. |
| 2013-07-08 20:46 | Hail | 1" quarter | .98 mi W of Ridgeview | No narrative filed · source: Public |
| 2013-07-08 21:00 | Wind | 61 kt 70 mph | 3.12 mi SSE of Moreau | An estimated wind gust of 70 mph brought down numerous large branches. |
| 2013-07-08 21:20 | Wind | 52 kt 60 mph | 8.31 mi S of Timber Lake Arpt | An estimated wind gust of 60 mph caused some tree damage to a shelter belt. |
| 2013-07-08 22:15 | Wind | 55 kt 63 mph | 0 mi N of Timber Lake Arpt | No narrative filed · source: Mesonet |
| 2013-07-08 22:20 | Wind | 56 kt 64 mph | 0 mi N of Timber Lake | Sixty-five mph winds caused tree branches to fall on some homes and cars causing some damage. |
| 2013-07-08 22:30 | Wind | 52 kt 60 mph | .98 mi W of Bear Creek | No narrative filed · source: Mesonet |
| 2013-06-22 18:20 | Wind | 52 kt 60 mph | 1.38 mi N of Isabel | Sixty mph winds were estimated. |
| 2013-06-17 19:05 | Hail | 1" quarter | 5.18 mi WSW of Whitehorse | Hail broke some windows out of the house. |
| 2013-05-26 00:45 | Hail | 0.88" nickel | 7.04 mi SE of Firesteel | No narrative filed · source: Trained Spotter |
| 2013-05-25 20:58 | Hail | 1" quarter | 0 mi N of Timber Lake | No narrative filed · source: Law Enforcement |
| 2013-05-18 15:40 | Hail | 1" quarter | 8.29 mi N of Eagle Butte | No narrative filed · source: Public |
| 2013-05-18 16:22 | Hail | 1" quarter | 2.42 mi W of Firesteel | No narrative filed · source: Public |
| 2012-07-24 23:40 | Wind | 50 kt 58 mph | .98 mi W of Bear Creek | No narrative filed · source: Mesonet |
| 2012-07-16 17:45 | Wind | 52 kt 60 mph | 1.46 mi W of Isabel | Sixty mph winds knocked the power out at the residence. |
| 2012-07-16 19:45 | Wind | 61 kt 70 mph | 9.69 mi N of Parade | Seventy mph winds downed a large tree and knocked the power out at the residence for three hours. |
Worst storm days in Dewey County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2016-07-22 | 10 | 2.5" (tennis ball) | — |
| 2010-06-16 | 10 | 1.75" (golf ball) | 142 mph |
| 2020-08-26 | 9 | 2" (hen egg) | 60 mph |
| 2022-07-05 | 7 | 4" (grapefruit) | 84 mph |
| 2021-06-08 | 7 | 1.75" (golf ball) | 72 mph |
| 2018-06-05 | 7 | 1.25" (half dollar) | 81 mph |
| 2016-07-16 | 6 | 1" (quarter) | 71 mph |
| 2013-07-08 | 6 | 1" (quarter) | 70 mph |
| 2010-06-26 | 5 | 1.75" (golf ball) | — |
| 2021-08-23 | 5 | 1.25" (half dollar) | 64 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 |
|---|---|---|---|
| 2022-07-05 | 2.5" tennis ball | 3.68 mi NE of Firesteel | A trained spotter estimated 70 to 80 mph winds. The wind and large hail broke skylights on the house. In addition, a fence was damaged, along with tree branches down. |
| 2022-07-05 | 4" grapefruit | 2.07 mi N of Timber Lake | No narrative filed |
| 2022-07-05 | 4" grapefruit | 0 mi N of Promise | No narrative filed |
| 2022-04-22 | 2" hen egg | 1.69 mi SW of Ridgeview | The large hail broke vehicle and house windows. |
| 2020-08-26 | 2" hen egg | 0 mi N of Timber Lake | No narrative filed |
| 2020-08-26 | 2" hen egg | .69 mi N of Timber Lake | No narrative filed |
| 2018-06-01 | 2.25" tennis ball | 2.81 mi S of Timber Lake Arpt | No narrative filed |
| 2016-07-22 | 2.5" tennis ball | 1.38 mi N of Isabel | No narrative filed |
When does hail hit Dewey County?
Across 17 years of records, July produced the most reports (94), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 0 | 0.0% |
| February | 0 | 0.0% |
| March | 1 | 0.4% |
| April | 3 | 1.2% |
| May | 13 | 5.4% |
| June | 79 | 32.6% |
| July | 94 | 38.8% |
| August | 43 | 17.8% |
| September | 8 | 3.3% |
| October | 1 | 0.4% |
| 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 →
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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 46041). 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.