Grant County Storm Activity
Wind, hail, and tornado activity from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 11, 2026
Grant County, Wisconsin has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 2 tornado reports among 65 severe weather events here in the last 12 months, alongside 16 hail reports with hail up to 2" and 47 high-wind reports with gusts up to 85 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 Grant 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.
Tuesday, August 11, 2026
1 NWS warning — hail up to 0.25"
“At 141 AM CDT, Doppler radar was tracking a strong thunderstorm near Cuba City, or near Platteville, moving east at 25 mph. Hazard: Pea size hail. Impact: Minor hail damage to vegetation is possible. This strong thunderstorm will be near... Cuba City around 145 AM CDT. Other locations impacted by this storm include Platteville Airport, Big Patch, Georgetown, and Cornelia.”
- Hail 0.25" Grant County NWS severe weather mention
Friday, August 7, 2026
1 NWS warning — wind gusts up to 50 mph
“At 421 PM CDT, Doppler radar was tracking decaying thunderstorms generating strong wind gusts along a line extending from near Black River Falls to 6 miles south of Bangor to 8 miles north of Waukon. Movement was east at 50 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Grant County NWS severe weather mention
Monday, July 20, 2026
1 NWS warning — hail up to 0.25"
“At 417 PM CDT, Doppler radar was tracking a strong thunderstorm over Lancaster, moving east at 45 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. Minor hail damage to vegetation is possible. This strong thunderstorm will be near... Platteville around 425 PM CDT.”
- Hail 0.25" Grant County NWS severe weather mention
Thursday, July 2, 2026
6 SPC verified storm reports — hail up to 2", wind gusts up to 78 mph
- Hail 2" 4 SSE Glen Haven SPC verified report
- Wind 78 mph 4 SSE Platteville SPC verified report
- Wind 73 mph 4 N Tennyson SPC verified report
- Wind 60 mph 1 NW Tennyson SPC verified report
- Wind 60 mph Livingston SPC verified report
- Wind 60 mph 2 SE Glen Haven SPC verified report
Wednesday, June 24, 2026
1 SPC verified storm report — hail up to 1"
“Report from mPING: Quarter (1.00 in.). (ARX)”
- Hail 1" 4 W Lancaster SPC verified report
Wednesday, June 17, 2026
2 SPC verified storm reports — 1 tornado report
“Rating: EF1 ... This tornado developed out of the same storm that produced the long track tornado west of Boscobel. This touchdown occurred about 4 miles southeast of B (ARX)”
“Small sheds and trees down in Boscobel. Potential tornado damage. Time estimated from radar. (ARX)”
- Tornado Tornado 4 SE Boscobel SPC verified report
- Wind Unknown 1 SSW Boscobel SPC verified report
Thursday, June 11, 2026
1 NWS warning — wind gusts up to 50 mph
“At 1153 AM CDT, trained weather spotters reported gusty showers along a line extending from near Millston to 9 miles northeast of La Farge to near Spring Green. Movement was northeast at 60 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Grant County NWS severe weather mention
Wednesday, June 10, 2026
4 SPC verified storm reports — wind gusts up to 85 mph
“Also reported some trees down and signs blown around. (ARX)”
- Wind 85 mph Livingston SPC verified report
- Wind 80 mph 1 S Lancaster SPC verified report
- Wind 68 mph 4 SSE Platteville SPC verified report
- Wind 60 mph Kieler SPC verified report
Tuesday, May 19, 2026
1 NWS warning — wind gusts up to 50 mph
“Strong wind gusts up to 50 mph are possible over the next few hours across portions of southeast Minnesota, northeast Iowa, and southwest Wisconsin in the wake of exit precipitation.”
- Wind 50 mph Grant County NWS severe weather mention
Monday, May 18, 2026
1 NWS warning — wind gusts up to 50 mph
“Strong wind gusts up to 50 mph are possible over the next few hours across portions of southeast Minnesota, northeast Iowa, and southwest Wisconsin. Unsecured outdoor objects may be blown around around by the wind and minor damage to objects such as trees and powerlines is possible.”
- Wind 50 mph Grant County NWS severe weather mention
Thursday, May 14, 2026
2 SPC verified storm reports — wind gusts up to 72 mph
“Home weather station PWS-KWIPOTOS9. (ARX)”
- Wind 72 mph 4 N Tennyson SPC verified report
- Wind 61 mph 5 SSW Livingston SPC verified report
Monday, April 27, 2026
2 NWS warnings — wind gusts up to 55 mph
“At 1110 AM CDT, automated weather observations reported strong winds behind a line of showers from 10 miles southeast of Harpers Ferry to near East Dubuque. These winds will last for 30 to 60 minutes before subsiding. 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 1119 AM CDT, Doppler radar was tracking strong winds behind a line of showers extending from near La Crosse to near Boscobel. Movement was northeast at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 55 mph Grant County NWS severe weather mention
- Wind 50 mph Grant County NWS severe weather mention
Thursday, April 23, 2026
1 NWS warning — wind gusts up to 50 mph
“At 1141 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Lancaster to Dickeyville to East Dubuque. Movement was northeast at 50 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Strong thunderstorms will be near... Platteville and Dickeyville around 1145 PM CDT.”
- Wind 50 mph Grant County NWS severe weather mention
Wednesday, April 22, 2026
1 SPC verified storm report — wind gusts up to 61 mph
- Wind 61 mph 2 N Livingston SPC verified report
Friday, April 17, 2026
1 SPC verified storm report · 3 NWS warnings — hail up to 0.88"
“At 458 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 9 miles southwest of Boscobel to near Lancaster. Movement was east at 45 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. Strong thunderstorms will be near...”
“At 122 PM CDT, Doppler radar was tracking a strong thunderstorm over Holy Cross, or 14 miles southeast of Guttenberg, moving northeast at 55 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. This strong thunderstorm will be near... Lancaster around 140 PM CDT.”
- Hail 0.88" Grant County NWS severe weather mention
- Hail 0.88" Grant County NWS severe weather mention
- Hail 0.75" Grant County NWS severe weather mention
- Wind Unknown 2 WNW Montfort SPC verified report
Wednesday, April 15, 2026
1 NWS warning — hail up to 0.25"
“At 447 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 8 miles west of Richland Center to near Boscobel to 7 miles southeast of Prairie Du Chien to 6 miles south of Garnavillo to Dundee. Movement was east at 25 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”
- Hail 0.25" Grant County NWS severe weather mention
Tuesday, April 14, 2026
5 SPC verified storm reports — hail up to 2", wind gusts up to 70 mph, 1 tornado report
“Picture provided via social media. (ARX)”
- Tornado Tornado 5 E Mount Hope SPC verified report
- Hail 2" Mount Hope SPC verified report
- Wind 70 mph 3 W Sinsinawa SPC verified report
- Hail 1" Patch Grove SPC verified report
- Hail 1" 3 NE Mount Hope SPC verified report
Monday, March 16, 2026
3 NWS warnings — wind gusts up to 50 mph
“...WINTER STORM MOVING EAST. IMPACTS ONGOING ACROSS THE REGION... .Moderate to heavy snow continues across southwest Wisconsin with significant blowing and drifting due to strong gusts to 40 to 50 mph. Widespread heavy impacts are ongoing so the Blizzard Warning will continue in southwest Wisconsin until 1 PM.”
“...BLIZZARD CONDITIONS INTO AT LEAST EARLY MORNING, BLOWING AND DRIFTING INTO AT LEAST MID-MORNING... .Moderate to heavy snow continues across southwest Wisconsin with significant blowing and drifting due to strong gusts to 40 to 50 mph. Widespread heavy impacts are ongoing so the Blizzard Warning will continue in these areas until midday.”
- Wind 50 mph Grant County NWS severe weather mention
- Wind 50 mph Grant County NWS severe weather mention
- Wind 50 mph Grant County NWS severe weather mention
Sunday, March 15, 2026
5 NWS warnings — wind gusts up to 55 mph
“...BLIZZARD CONDITIONS WITH ADDITIONAL SNOW MOVING IN THIS AFTERNOON... .The first round of this winter storm is will continue to exit east into eastern WI which will leave a brief lull across the area for the early afternoon. During this period, winds will begin to increase with wind gusts of 40 to 55 mph by the early evening.”
“...BLIZZARD CONDITIONS WITH ADDITIONAL SNOW MOVING IN THIS AFTERNOON... .The first round of this winter storm is will continue to exit east into eastern WI which will leave a brief lull across the area for the early afternoon. During this period, winds will begin to increase with wind gusts of 40 to 55 mph by the early evening.”
- Wind 55 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
- Wind 50 mph Grant County NWS severe weather mention
Saturday, March 14, 2026
1 NWS warning — wind gusts up to 50 mph
“...DANGEROUS WINTER STORM MOVES IN THIS EVENING... .A dangerous and potentially historic winter storm will move into the region this evening and continue through early Monday morning. Snow will move into the region this evening north of Interstate 90 with snowfall rates increasing throughout the overnight.”
- Wind 50 mph Grant County NWS severe weather mention
Friday, March 13, 2026
4 NWS warnings — wind gusts up to 70 mph
“WHAT...Northwest winds 35 to 45 mph with gusts up to 60 to 70 mph. These winds are already occurring! WHERE...Crawford, Grant, Richland, and Vernon Counties. WHEN...Until 1 PM CDT this afternoon. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
“WHAT...West winds 25 to 35 mph with gusts up to 60 mph. WHERE...Crawford, Grant, Richland, and Vernon Counties. WHEN...Until 1 PM CDT this afternoon. IMPACTS...Damaging winds will blow down trees and power lines. Some power outages are possible. Travel will be difficult, especially for high profile vehicles.”
- Wind 70 mph Grant County NWS severe weather mention
- Wind 60 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
Thursday, March 12, 2026
5 NWS warnings — wind gusts up to 60 mph
“WHAT...West winds 20 to 30 mph with gusts up to 60 mph expected. WHERE...Crawford, Grant, Richland, and Vernon Counties. WHEN...From midnight tonight to 1 PM CDT Friday. IMPACTS...Damaging winds will blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles.”
“WHAT...West to northwest winds 30 to 40 mph with gusts up to 60 mph expected. WHERE...Crawford, Grant, Richland, and Vernon Counties. The strongest wind gusts are expected at higher elevations and exposed locales. WHEN...From midnight tonight to 1 PM CDT Friday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected.”
- Wind 60 mph Grant County NWS severe weather mention
- Wind 60 mph Grant County NWS severe weather mention
- Wind 60 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
- Wind 55 mph Grant County NWS severe weather mention
Wednesday, March 11, 2026
1 NWS warning — wind gusts up to 50 mph
“WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of central, north central, southwest, and west central Wisconsin. WHEN...From midnight Thursday Night to 1 PM CDT Friday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 50 mph Grant County NWS severe weather mention
Monday, March 9, 2026
1 SPC verified storm report — hail up to 1"
- Hail 1" 5 SW Platteville SPC verified report
Friday, March 6, 2026
1 NWS warning — wind gusts up to 50 mph
“At 1030 PM CST, Doppler radar was tracking a strong thunderstorm near Cassville, or near Guttenberg, moving northeast at 55 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. This strong thunderstorm will be near... Bloomington around 1035 PM CST. Lancaster around 1040 PM CST. Fennimore around 1045 PM CST.”
- Wind 50 mph Grant County NWS severe weather mention
Wednesday, February 18, 2026
1 NWS warning — wind gusts up to 50 mph
“WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Northeast Iowa and, in southeast Minnesota, Dodge, Olmsted, Mower, and Fillmore Counties and, in southwest Wisconsin, Crawford and Grant Counties. WHEN...Until 6 PM CST this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 50 mph Grant County NWS severe weather mention
Monday, December 29, 2025
1 NWS warning — wind gusts up to 50 mph
“...HAZARDOUS WINTER STORM THIS MORNING... .Areas of heavy snow and widespread strong northwest winds persist hazardous travel conditions this morning. Blizzard conditions due to blowing snow and 40 to 50 mph winds primarily affect open and unsheltered locations of northeast Iowa and southeast Minnesota.”
- Wind 50 mph Grant County NWS severe weather mention
Thursday, December 18, 2025
1 NWS warning — wind gusts up to 50 mph
“...BURSTS OF HEAVY SNOW, GUSTY WINDS, REDUCED VISIBILITIES, AND FLASH FREEZE... .Numerous snow showers and gusty winds to 50 mph through this evening. Bursts of heavy snow combined with the gusty winds resulting in rapidly reduced visibilities and periods of whiteout conditions.”
- Wind 50 mph Grant County NWS severe weather mention
Wednesday, December 10, 2025
1 NWS warning — wind gusts up to 50 mph
“...ROUND 2 OF SNOW ARRIVING... .The second round of snow is beginning to move into southeast Minnesota and the I-94 corridor in central Wisconsin. Prior to the arrival of the snow, patchy freezing drizzle will be possible. A light glaze of ice may be possible on untreated and exposed surfaces. This band of snow will continue to move through the area over the next several hours.”
- Wind 50 mph Grant County NWS severe weather mention
Tuesday, December 9, 2025
1 NWS warning — wind gusts up to 50 mph
“...ROUND 1 OF SNOW DEPARTING, ROUND 2 ARRIVES SHORTLY... .The first wave of moderate to heavy snow is exiting for areas along and south of I-94, with moderate to locally heavy snow continuing further northeast. A second round of snow moves in after midnight, which will be accompanied by stronger winds that could lead to blowing and drifting of the new snow and reduced visibilities.”
- Wind 50 mph Grant County NWS severe weather mention
Monday, September 22, 2025
2 SPC verified storm reports — hail up to 2"
- Hail 2" 2 S Montfort SPC verified report
- Hail 1" 1 N Montfort SPC verified report
Today's severe weather outlook
Common questions
When was the last severe storm in Grant County, WI?
The most recent recorded event was in September 2026. Official NWS and SPC records show 65 severe weather events in Grant County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.
Has there been hail in Grant County recently?
Yes — 16 hail reports in the last 12 months, with hail up to 2" 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.