Walworth County Hail Map & Storm Reports
Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Nov 1, 2026
Walworth County, Wisconsin has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 5 tornado reports among 65 severe weather events here in the last 12 months, alongside 28 hail reports with hail up to 2" and 32 high-wind reports with gusts up to 100 mph. The most recent recorded storm activity was on Aug 18, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.
Walworth County hail map
Where hail and high-wind reports clustered across Walworth County over the last 12 months. Heat shows report density and significance, not radar.
What the radar showed
Storm exposure for an address in Walworth County
Get a free report in your folder. A city is enough if you do not have a street.
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 18, 2026
1 NWS warning — wind gusts up to 50 mph
“At 742 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Racine to Yorkville to near Browns Lake to near Lake Geneva. Movement was southeast at 35 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 Walworth County NWS severe weather mention
Tuesday, August 11, 2026
2 NWS warnings — hail up to 0.88"
“At 257 AM CDT, Doppler radar was tracking a cluster of strong thunderstorms over Clinton, or 10 miles west of Delavan, moving southeast 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...”
“At 232 AM CDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from Janesville to near Brodhead. Movement was east at 15 mph. Hazard: Wind gusts up to 40 mph and half inch 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" Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
Monday, August 10, 2026
1 NWS warning — hail up to 0.5"
“At 1205 AM CDT, Doppler radar was tracking a strong thunderstorm near Lake Geneva, moving east at 15 mph. Hazard: Wind gusts up to 40 mph and half inch 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 0.5" Walworth County NWS severe weather mention
Sunday, August 9, 2026
2 SPC verified storm reports · 3 NWS warnings — hail up to 1.5", wind gusts up to 50 mph
“Report from mPING: Ping Pong Ball (1.50 in.). (MKX)”
“At 1042 AM CDT, Doppler radar was tracking a cluster of strong thunderstorms near Milton, moving east at 40 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Hail 1.5" 2 W Pell Lake SPC verified report
- Wind 50 mph Walworth County NWS severe weather mention
- Hail 0.88" Walworth County NWS severe weather mention
- Hail 0.88" Walworth County NWS severe weather mention
- Hail 1" 3 SSE Fontana-on-Geneva SPC verified report
Monday, July 27, 2026
1 NWS warning — hail up to 0.75"
“At 1009 AM CDT, Doppler radar was tracking a strong thunderstorm near Palmyra, or 8 miles west of East Troy, moving east 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. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.75" Walworth County NWS severe weather mention
Friday, July 3, 2026
4 SPC verified storm reports — wind gusts up to 100 mph
“3 FATAL... 2 INJ NWS Storm Survey for Walworth County: Damage from south of Darien through Lake Delavan to Como occurred due to downburst winds and not a tornad (MKX)”
“Multiple large limbs down and a few trees snapped near the top in Lyons. Time estimated from radar. (MKX)”
- Wind 100 mph 2 SE Darien SPC verified report
- Wind 63 mph 1 S Darien SPC verified report
- Wind Unknown 4 WNW Bohners Lake SPC verified report
- Wind Unknown 1 N Sharon SPC verified report
Thursday, July 2, 2026
2 NWS warnings — wind gusts up to 50 mph
“At 1015 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Footville to near Rockton. Movement was east 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...”
“At 632 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Hartford to near Johnson Creek to near Jefferson to near Edgerton to near Brodhead. Movement was east at 35 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 Walworth County NWS severe weather mention
- Wind 50 mph Walworth County NWS severe weather mention
Sunday, June 28, 2026
1 NWS warning — wind gusts up to 50 mph
“Winds of 40 to 50 mph will be possible this afternoon as rain comes to an end across southern Wisconsin. This appears to be a wake low situation where winds can be gusty for up to an hour after the rain comes to an end. Platteville and other weather stations in southwest Wisconsin have gusted to 47 mph already.”
- Wind 50 mph Walworth County NWS severe weather mention
Wednesday, June 24, 2026
2 NWS warnings — hail up to 0.5"
“At 426 PM CDT, Doppler radar was tracking a strong thunderstorm near Clinton, or 8 miles southeast of Janesville, moving southeast at 25 mph. Hazard: Wind gusts of 45 to 55 mph and half inch 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 438 PM CDT, Doppler radar was tracking a strong thunderstorm over Williams Bay, moving southeast 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. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.5" Walworth County NWS severe weather mention
- Hail 0.25" Walworth County NWS severe weather mention
Thursday, June 11, 2026
1 SPC verified storm report · 1 NWS warning — wind gusts up to 50 mph
“At 1137 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Stoughton to near Candlewick Lake. Movement was northeast at 55 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
“Large branch down on Hill St in Walworth. Time est from radar. (MKX)”
- Wind 50 mph Walworth County NWS severe weather mention
- Wind Unknown Walworth SPC verified report
Friday, June 5, 2026
1 NWS warning — hail up to 0.25"
“At 1157 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from Muskego to near Whitewater. Movement was east at 35 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. Locations impacted include...”
- Hail 0.25" Walworth County NWS severe weather mention
Monday, May 18, 2026
2 NWS warnings — hail up to 0.75"
“At 542 AM CDT, Doppler radar was tracking a strong thunderstorm near Clinton, or 8 miles east of Beloit, moving northeast at 50 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. Minor hail damage to vegetation is possible. Locations impacted include...”
“At 610 AM CDT, Doppler radar was tracking a strong thunderstorm near Palmyra, or near East Troy, moving northeast at 55 mph. Hazard: Wind gusts up to 40 mph and half inch 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 0.75" Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
Monday, April 27, 2026
2 NWS warnings — wind gusts up to 50 mph
“At 1241 PM CDT, surface weather stations reported gusty winds behind rain showers / weak thunderstorms. Movement of the line of showers was east at 55 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
“At 1206 PM CDT, surface weather stations traked gusty winds behind rain showers / weak thunderstorms. Movement of the line of showers was east at 55 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 Walworth County NWS severe weather mention
- Wind 50 mph Walworth County NWS severe weather mention
Friday, April 17, 2026
5 SPC verified storm reports — hail up to 1", 3 tornado reports
“NWS Damage Survey concludes an EF-1 tornado occurred with estimated peak winds of 100 mph. The tornado started near Turtle Creek by Klug Road... lifting northeastward t (MKX)”
“NWS Storm Survey concludes an EF-1 tornado occurred with estimated peak winds of 100 mph. The tornado started just north of School Section Road... traveled along State (MKX)”
- Tornado Tornado 3 WNW Delavan SPC verified report
- Tornado Tornado 3 NNW Darien SPC verified report
- Tornado Tornado 5 WNW Burlington SPC verified report
- Hail 1" 3 SE Palmyra SPC verified report
- Wind Unknown East Troy SPC verified report
Wednesday, April 15, 2026
2 SPC verified storm reports — hail up to 1", 1 tornado report
“EF1 tornado west of Elkhorn. Metal roof and wall panels ripped off buildings and lofted. Tree damage. Maximum estimated wind speed of 100 mph. Path of approximately 2 m (MKX)”
- Tornado Tornado 4 N Delavan SPC verified report
- Hail 1" 2 SE Elkhorn SPC verified report
Tuesday, April 14, 2026
4 SPC verified storm reports · 3 NWS warnings — hail up to 0.5", wind gusts up to 50 mph, 1 tornado report
“NWS Storm Survey found EF1 tornado damage southwest of East Troy. Maximum winds of 100 MPH. (MKX)”
“At 158 AM CDT, Doppler radar was tracking strong wind gusts persisting across the area. While the line of storms has exited to the east, these wind gusts will continue for the next 30 minutes. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Tornado Tornado 5 SW East Troy SPC verified report
- Wind 50 mph Walworth County NWS severe weather mention
- Wind 50 mph Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
- Wind Unknown 1 S Potter Lake SPC verified report
- Wind Unknown Potter Lake SPC verified report
- Wind Unknown Whitewater SPC verified report
Friday, April 3, 2026
1 SPC verified storm report · 3 NWS warnings — hail up to 1"
“At 923 PM CDT, Doppler radar was tracking a strong thunderstorm over Rochester, or 7 miles south of Wind Lake, moving northeast at 25 mph. Hazard: Nickel size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include...”
“At 914 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Lake Koshkonong to 6 miles east of Milton to near Delavan to near Elkhorn. Movement was northeast at 40 mph. Hazard: Penny size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.88" Walworth County NWS severe weather mention
- Hail 1" 1 SE Lake Geneva SPC verified report
- Hail 0.75" Walworth County NWS severe weather mention
- Hail 0.75" Walworth County NWS severe weather mention
Thursday, April 2, 2026
4 SPC verified storm reports — hail up to 2"
“Report from mPING: Quarter (1.00 in.). (MKX)”
“Walworth County Dispatch reports trees down in Sugar Creek Township. Time estimated by radar. (MKX)”
- Hail 2" 2 W Whitewater SPC verified report
- Hail 1" 2 W Whitewater SPC verified report
- Wind Unknown 2 NW Elkhorn SPC verified report
- Wind Unknown 1 SSW Whitewater SPC verified report
Tuesday, March 31, 2026
5 NWS warnings — hail up to 0.88", wind gusts up to 50 mph
“TEMPORARY PERIOD OF STRONG GUSTS... On the back side of showers pushing through to the south and east we are seeing some gusts upwards of 50 mph. For the next few hours we may see this continue with 40-50 mph gusts possible.”
“At 1150 AM CDT, Doppler radar was tracking a strong thunderstorm near Sharon, or 8 miles north of Poplar Grove, moving northeast at 35 mph. Hazard: Nickel size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include...”
- Wind 50 mph Walworth County NWS severe weather mention
- Hail 0.88" Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
Friday, March 13, 2026
1 NWS warning — wind gusts up to 60 mph
“WHAT...West winds 25 to 35 mph with gusts up to 60 mph. WHERE...Portions of east central, south central, and southeast Wisconsin. WHEN...Until 4 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.”
- Wind 60 mph Walworth County NWS severe weather mention
Thursday, March 12, 2026
4 NWS warnings — wind gusts up to 60 mph
“WHAT...Initially, south winds 20 to 30 mph with gusts up to 60 mph expected, particularly within precipitation. Then, west winds 20 to 30 mph with gusts up to 60 mph expected. WHERE...Portions of east central, south central, and southeast Wisconsin. WHEN...Until 4 PM CDT Friday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected.”
“WHAT...Initially, south winds 20 to 30 mph with gusts up to 60 mph expected, particularly within precipitation. Then, west winds 20 to 30 mph with gusts up to 60 mph expected. WHERE...Portions of east central, south central, and southeast Wisconsin. WHEN...10 PM Tonight Until 4 PM CDT Friday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected.”
- Wind 60 mph Walworth County NWS severe weather mention
- Wind 60 mph Walworth County NWS severe weather mention
- Wind 60 mph Walworth County NWS severe weather mention
- Wind 50 mph Walworth County NWS severe weather mention
Wednesday, March 11, 2026
1 NWS warning — wind gusts up to 50 mph
“WHAT...Overnight southerly winds 25 to 30 mph gusting up to 50 mph. Then, during the day Friday, west winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of east central, south central, and southeast Wisconsin. WHEN...From midnight Thursday Night to 6 PM CDT Friday. IMPACTS...Gusty winds will blow around unsecured objects.”
- Wind 50 mph Walworth County NWS severe weather mention
Tuesday, March 10, 2026
2 NWS warnings — hail up to 0.75"
“At 727 PM CDT, Doppler radar was tracking a strong thunderstorm over Sharon, or 9 miles north of Poplar Grove, moving northeast at 35 mph. Hazard: Penny size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include...”
“At 820 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Darien to near Capron. Movement was east at 20 mph. Hazard: Half inch hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.75" Walworth County NWS severe weather mention
- Hail 0.5" Walworth County NWS severe weather mention
Monday, December 29, 2025
1 NWS warning — wind gusts up to 55 mph
“WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph. A few gusts to 55 mph possible near Lake Michigan. WHERE...Portions of east central and southeast Wisconsin. 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 55 mph Walworth County NWS severe weather mention
Sunday, December 28, 2025
2 NWS warnings — wind gusts up to 55 mph
“WHAT...Northwest winds 20 to 30 MPH with gusts up to 50 MPH. A few gusts to 55 MPH possible near Lake Michigan. WHERE...Portions of east central and southeast Wisconsin. WHEN...Until 6 PM CST Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
“WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. A few gusts to 55 mph may occur along the Lake Michigan shoreline. WHERE...Portions of east central, south central, and southeast Wisconsin. WHEN...From 6 PM this evening to 6 PM CST Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 55 mph Walworth County NWS severe weather mention
- Wind 55 mph Walworth County NWS severe weather mention
Saturday, December 27, 2025
1 NWS warning — wind gusts up to 55 mph
“WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. A few gusts to 55 mph may occur along the Lake Michigan shoreline. WHERE...Portions of east central, south central, and southeast Wisconsin. WHEN...From 6 PM Sunday to 6 PM CST Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 55 mph Walworth County NWS severe weather mention
Today's severe weather outlook
Common questions
When was the last severe storm in Walworth County, WI?
The most recent recorded event was on Aug 18, 2026. Official NWS and SPC records show 65 severe weather events in Walworth County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.
Did it hail in Walworth County recently?
Yes — 28 hail reports in the last 12 months, with hail up to 2" recorded. The hail map above shows where reports clustered; the storm log lists each day.
How do I see hail history for a specific address in Walworth County?
Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property, including the most recent 30 days — county-level pages like this one only tell part of the story.
Most active Wisconsin counties
50% Off Pro — First Year
Until November 1, lock Pro at $14.50/mo for the first 12 months, then $29. Cancel drops the rate.
Lock in 50% off →