Lyman County Storm Activity
Wind, hail, and tornado activity from official NOAA sources (NWS & SPC) · Last 180 days · Updated Sep 11, 2026
Has it hailed in Lyman County, South Dakota recently? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records say yes: 31 hail reports with hail up to 1.75", among 67 severe weather events logged here in the last 180 days, together with 36 high-wind reports with gusts up to 71 mph. The most recent recorded storm activity was in September 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.
What the radar showed
Last 30 days in Lyman County
Recent storms — full detail available in the app
Storm activity from the last 30 days is summarized at the county level on this page. Exact locations, radar snapshots, and official warning boundaries for recent events are available with a free account.
See the specifics — free →Storm log — the official record, day by day
Events older than 30 days, as recorded by the National Weather Service and Storm Prediction Center. Excerpts are quoted directly from official warnings and verified reports.
Monday, August 10, 2026
1 SPC verified storm report — wind gusts up to 58 mph
“Mesonet station KBMS2 Kennebec 6SSE (SD Mesonet). (ABR)”
- Wind 58 mph 6 SSE Kennebec SPC verified report
Thursday, July 30, 2026
1 NWS warning — hail up to 0.25"
“At 1207 AM CDT /1107 PM MDT/, Public reported a line of strong thunderstorms extending from near Grey Goose to 13 miles south of 5 Mile Corner, or extending from 13 miles north of Pierre to 15 miles southwest of Presho, moving east at 25 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”
- Hail 0.25" Lyman County NWS severe weather mention
Wednesday, July 29, 2026
1 NWS warning — hail up to 0.25"
“At 1130 PM CDT /1030 PM MDT/, Public reported a line of strong thunderstorms extending from near Chantier Creek Recreation Area to 7 miles east of Westover, or extending from 17 miles west of Fort Pierre to 15 miles southeast of Murdo, moving east at 25 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”
- Hail 0.25" Lyman County NWS severe weather mention
Saturday, July 25, 2026
2 NWS warnings — hail up to 0.5"
“At 254 PM CDT /154 PM MDT/, Doppler radar was tracking a strong thunderstorm 11 miles north of Murdo, moving northeast at 25 mph. Hazard: Wind gusts of 50 to 55 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible.”
“At 340 PM CDT /240 PM MDT/, Doppler radar was tracking a strong thunderstorm 6 miles south of Wendte, or 19 miles north of Murdo, moving east at 30 mph. Hazard: Wind gusts of 50 to 55 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. The strong thunderstorm will be near... Wendte around 345 PM CDT.”
- Hail 0.5" Lyman County NWS severe weather mention
- Hail 0.25" Lyman County NWS severe weather mention
Sunday, July 19, 2026
1 SPC verified storm report — wind gusts up to 62 mph
- Wind 62 mph 1.1 E Presho SPC verified report
Saturday, July 18, 2026
1 SPC verified storm report — wind gusts up to 62 mph
“Mesonet station KBMS2 Kennebec 6SSE (SD Mesonet). (ABR)”
- Wind 62 mph 6 SSE Kennebec SPC verified report
Monday, July 6, 2026
2 NWS warnings — hail up to 0.88"
“At 326 PM CDT, Doppler radar was tracking a strong thunderstorm 9 miles south of Lyman, or 13 miles west of Oacoma, moving east at 25 mph. Hazard: Wind gusts of 50 to 55 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
“At 300 PM CDT, Doppler radar was tracking a strong thunderstorm over Counselor Creek Boat Access Area, or near Fort Thompson, moving east at 20 mph. Hazard: Wind gusts up to 50 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.88" Lyman County NWS severe weather mention
- Hail 0.88" Lyman County NWS severe weather mention
Saturday, July 4, 2026
2 SPC verified storm reports · 1 NWS warning — hail up to 1.25"
“mainly dime and nickel size hail with some larger hailstones thrown in. (ABR)”
“At 631 PM CDT, Doppler radar was tracking a strong thunderstorm over Oacoma, moving southeast at 10 mph. Hazard: Wind gusts of 50 to 55 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. The strong thunderstorm will be near... Oacoma and Dude Ranch around 645 PM CDT.”
- Hail 1.25" 3 NE Oacoma SPC verified report
- Hail 0.88" Lyman County NWS severe weather mention
- Hail 1" Oacoma SPC verified report
Friday, July 3, 2026
5 NWS warnings — hail up to 0.88"
“At 225 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Canning to near Fate Dam to 11 miles northwest of Ideal. Movement was northeast at 30 mph. Hazard: Wind gusts of 50 to 55 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.”
“At 327 AM CDT, trained weather spotters reported a cluster of strong thunderstorms along a line extending from 6 miles southwest of Highmore to near Etbauer Hill to near Chamberlain. Movement was east at 35 mph. Hazard: Wind gusts of 50 to 55 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.”
- Hail 0.88" Lyman County NWS severe weather mention
- Hail 0.75" Lyman County NWS severe weather mention
- Hail 0.75" Lyman County NWS severe weather mention
- Hail 0.25" Lyman County NWS severe weather mention
- Hail 0.25" Lyman County NWS severe weather mention
Thursday, July 2, 2026
4 SPC verified storm reports — wind gusts up to 69 mph
“Mesonet station 54 Reliance (SDDOT). (ABR)”
“Personal weather station 4.9 miles SW of Kennebec recorded a gust of 58 mph. (ABR)”
- Wind 69 mph 3 SE Reliance SPC verified report
- Wind 58 mph 4 SW Kennebec SPC verified report
- Wind 64 mph 6 SW Joe Creek Rec Area SPC verified report
- Wind 62 mph 9 NNW Vivian SPC verified report
Wednesday, July 1, 2026
1 NWS warning — wind gusts up to 55 mph
“At 232 AM CDT, trained weather spotters reported a cluster of strong thunderstorms 8 miles northwest of Iona, or 11 miles southwest of Oacoma, moving northeast at 40 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 55 mph Lyman County NWS severe weather mention
Tuesday, June 30, 2026
1 SPC verified storm report — wind gusts up to 64 mph
“Mesonet station OCMS2 Oacoma 2W (SD Mesonet). (ABR)”
- Wind 64 mph 2 W Oacoma SPC verified report
Sunday, June 28, 2026
2 SPC verified storm reports — wind gusts up to 70 mph
“Mesonet station 13 Vivian (SDDOT). (ABR)”
“Mesonet station VVMS2 Vivian 12S (SD Mesonet). (ABR)”
- Wind 70 mph 9 NNW Vivian SPC verified report
- Wind 59 mph 12 S Vivian SPC verified report
Saturday, June 27, 2026
5 NWS warnings — wind gusts up to 55 mph
“At 1000 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from Grey Goose to near Pierre to 8 miles southeast of Wendte. Movement was east at 45 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
“At 1129 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from 10 miles west of Polo to near Highmore to Stephan to near Lower Brule. Movement was northeast at 45 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Miller, Highmore, Lower Brule, St.”
- Wind 55 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
Wednesday, June 17, 2026
2 NWS warnings — wind gusts up to 55 mph
“WHAT...Northwest winds 25 to 35 mph with gusts up to 55 mph. WHERE...Jones, Lyman, and Stanley Counties. WHEN...Until 9 PM CDT /8 PM MDT/ this evening. IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result.”
“WHAT...Northwest winds 30 to 40 mph with gusts up to 55 mph expected. WHERE...Jones, Lyman, and Stanley Counties. WHEN...Until 9 PM CDT /8 PM MDT/ this evening. IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result.”
- Wind 55 mph Lyman County NWS severe weather mention
- Wind 55 mph Lyman County NWS severe weather mention
Tuesday, June 16, 2026
2 NWS warnings — wind gusts up to 55 mph
“WHAT...Northwest winds 30 to 40 mph with gusts up to 55 mph expected. WHERE...Jones, Lyman, and Stanley Counties. WHEN...From 10 AM CDT /9 AM MDT/ to 9 PM CDT /8 PM MDT/ Wednesday. IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result.”
“WHAT...Northwest winds 30 to 40 mph with gusts up to 55 mph expected. WHERE...Jones, Lyman, and Stanley Counties. WHEN...From 10 AM CDT /9 AM MDT/ to 9 PM CDT /8 PM MDT/ Wednesday. IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result.”
- Wind 55 mph Lyman County NWS severe weather mention
- Wind 55 mph Lyman County NWS severe weather mention
Monday, June 8, 2026
1 SPC verified storm report — wind gusts up to 59 mph
“Mesonet station LBMS2 Lower Brule 2WNW (SD Mesonet). (ABR)”
- Wind 59 mph 1 WNW Lower Brule SPC verified report
Thursday, June 4, 2026
2 NWS warnings — hail up to 0.88"
“At 718 PM CDT, Doppler radar was tracking a strong thunderstorm 9 miles southwest of Lake Francis Case, or 11 miles southwest of Oacoma, moving east at 25 mph. Hazard: Wind gusts of 50 to 55 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Lake Francis Case.”
“At 1001 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from 6 miles northwest of Canning to 8 miles west of Intersection of Highway 83 and White River. Movement was south at 35 mph. Hazard: Wind gusts up to 40 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”
- Hail 0.88" Lyman County NWS severe weather mention
- Hail 0.75" Lyman County NWS severe weather mention
Wednesday, June 3, 2026
5 SPC verified storm reports — hail up to 1.5", wind gusts up to 71 mph
“Mesonet station 285 Lower Brule 14 W (SDDOT). (ABR)”
“Mesonet station 13 Vivian (SDDOT). (ABR)”
- Hail 1.5" 8 SW Presho SPC verified report
- Wind 71 mph 6 SW Joe Creek Rec Area SPC verified report
- Wind 68 mph 9 NNW Vivian SPC verified report
- Wind 59 mph 12 S Vivian SPC verified report
- Wind 58 mph 3 SE Reliance SPC verified report
Tuesday, June 2, 2026
2 SPC verified storm reports · 2 NWS warnings — hail up to 1.75", wind gusts up to 60 mph
“winds rocking a pickup filled with equipment... very heavy downpours also reported. (ABR)”
“At 1032 PM CDT, Doppler radar was tracking a strong thunderstorm over Medicine Butte, or 8 miles south of Lower Brule, moving northeast at 25 mph. Hazard: Wind gusts up to 40 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 1.75" 4 WNW Iona SPC verified report
- Wind 60 mph 8 WNW Iona SPC verified report
- Hail 0.88" Lyman County NWS severe weather mention
- Hail 0.88" Lyman County NWS severe weather mention
Monday, June 1, 2026
2 SPC verified storm reports — hail up to 1.75", wind gusts up to 60 mph
“Mesonet station 13 Vivian (SDDOT). (ABR)”
- Hail 1.75" 5 SW Counselor Creek Re SPC verified report
- Wind 60 mph 9 NNW Vivian SPC verified report
Sunday, May 31, 2026
2 NWS warnings — hail up to 0.88"
“At 1206 AM CDT, Doppler radar was tracking a strong thunderstorm near Kennebec, or near Presho, moving north at 40 mph. Hazard: Wind gusts up to 50 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
“At 1248 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles northeast of Degrey Rec Area to 9 miles east of Stephan to near Gann Valley. Movement was north at 40 mph. Hazard: Wind gusts of 50 to 55 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.”
- Hail 0.88" Lyman County NWS severe weather mention
- Hail 0.25" Lyman County NWS severe weather mention
Thursday, May 14, 2026
3 NWS warnings — wind gusts up to 50 mph
“Strong wind gusts up to 50 mph are expected to persist through the afternoon hours today. Localized stronger wind gusts of more than 50 mph will be possible as the result of sprinkles or brief showers moving through this morning into the afternoon. This will lead to patchy to areas of blowing dust and reduced visibilities between 1 to 3 miles.”
“AFFECTED AREA...In South Dakota, Spink, Clark, Codington, Hamlin, Deuel, Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo. WINDS...West 25 to 35 mph with gusts up to 50 mph. RELATIVE HUMIDITY...As low as 14 percent. IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress.”
- Wind 50 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
Thursday, April 23, 2026
1 NWS warning — wind gusts up to 50 mph
“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Hughes, Hyde, Jones, Lyman, Stanley, Sully, Faulk, and Potter Counties. WHEN...From 1 PM CDT /noon MDT/ this afternoon to 7 PM CDT /6 PM MDT/ this evening. IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result.”
- Wind 50 mph Lyman County NWS severe weather mention
Wednesday, April 22, 2026
1 NWS warning — hail up to 0.25"
“At 930 PM CDT/830 PM MDT/, Doppler radar was tracking strong thunderstorms along a line extending from Strasburg to 7 miles north of Gettysburg to 7 miles north of Wood. Movement was northeast at 55 mph. Hazard: Wind gusts of 50 to 55 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.”
- Hail 0.25" Lyman County NWS severe weather mention
Saturday, March 28, 2026
3 NWS warnings — wind gusts up to 55 mph
“AFFECTED AREA...In South Dakota, Faulk, Spink, Hyde, Hand, Lyman and Buffalo. WINDS...Southwest 20 to 30 mph with gusts up to 55 mph. RELATIVE HUMIDITY...As low as 18 percent. IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress.”
“WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph. WHERE...Buffalo, Hand, Hyde, Lyman, and Spink Counties. WHEN...Until 4 PM CDT this afternoon. IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result. Gusty winds may also cause blowing dust to occasionally reduce visibility, especially near open fields.”
- Wind 55 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
- Wind 50 mph Lyman County NWS severe weather mention
Today's severe weather outlook
Common questions
When was the last severe storm in Lyman County, SD?
The most recent recorded event was in September 2026. Official NWS and SPC records show 67 severe weather events in Lyman County over the last 180 days. Exact dates and locations for recent storms are available in the app with a free account.
Has there been hail in Lyman County recently?
Yes — 31 hail reports in the last 180 days, with hail up to 1.75" recorded.
How do I check whether a specific address was affected?
Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property — county-level pages like this one only tell part of the story.