Rock County Hail Map & Storm Reports
Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 13, 2026
Rock County, Wisconsin has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 2 tornado reports among 60 severe weather events here in the last 12 months, alongside 28 hail reports with hail up to 2" and 30 high-wind reports with gusts up to 85 mph. The most recent recorded storm activity was on Aug 11, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.
Rock County hail map
Where hail and high-wind reports clustered across Rock County over the last 12 months. Heat shows report density and significance, not radar.
What the radar showed
Hail history for an address in Rock County
See address-level storm exposure — verified hail and wind reports plus official warning boundaries around any specific property, including the most recent 30 days. Free account, takes under a minute.
Check an address 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
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" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
Sunday, August 9, 2026
1 NWS warning — wind gusts up to 50 mph
“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...”
- Wind 50 mph Rock County NWS severe weather mention
Friday, August 7, 2026
1 NWS warning — hail up to 0.5"
“At 626 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from Lake Koshkonong to near Dakota. Movement was east at 20 mph. Hazard: Wind gusts up to 50 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" Rock County NWS severe weather mention
Friday, July 3, 2026
1 SPC verified storm report
“Reports of trees and powerlines down in Beloit. Time estimated from radar. (MKX)”
- Wind Unknown Beloit SPC verified report
Thursday, July 2, 2026
1 SPC verified storm report · 3 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 Rock County NWS severe weather mention
- Wind 50 mph Rock County NWS severe weather mention
- Wind 50 mph Rock County NWS severe weather mention
- Wind Unknown 2 ENE Janesville SPC verified report
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 Rock County NWS severe weather mention
Wednesday, June 24, 2026
2 SPC verified storm reports · 4 NWS warnings — hail up to 1.25", wind gusts up to 60 mph
“About 3 large limbs out of a healthy tree in Milton. (MKX)”
“At 338 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Brodhead to 6 miles southeast of Argyle to Warren. Movement was east at 20 mph. Hazard: Wind gusts up to 50 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 1.25" 2 SE Milton SPC verified report
- Wind 60 mph Milton SPC verified report
- Hail 0.75" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
Wednesday, June 17, 2026
1 NWS warning — wind gusts up to 55 mph
“Strong southeasterly winds have developed behind drying precipitation, with gusts of 50 to 55 mph expected for Iowa, Dane, Lafayette, Green, and Rock Counties this morning.”
- Wind 55 mph Rock County NWS severe weather mention
Thursday, June 11, 2026
2 NWS warnings — wind gusts up to 55 mph
“At 1024 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Menominee to near Mount Carroll. Movement was northeast at 65 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 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...”
- Wind 55 mph Rock County NWS severe weather mention
- Wind 50 mph Rock County NWS severe weather mention
Wednesday, June 10, 2026
4 SPC verified storm reports — wind gusts up to 85 mph
“85 MPH wind gust estimated from home instrumentation. (MKX)”
“Trained spotter estimates 80 MPH wind gusts. (MKX)”
- Wind 85 mph 6 N Shirland SPC verified report
- Wind 80 mph 2 NW Milton SPC verified report
- Wind 80 mph 4 W Edgerton SPC verified report
- Wind Unknown Edgerton SPC verified report
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 458 AM CDT, Doppler radar was tracking a strong thunderstorm over Brooklyn, or near Oregon, moving northeast at 45 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" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
Sunday, May 17, 2026
1 NWS warning — hail up to 0.75"
“At 1047 AM CDT, Doppler radar was tracking a strong thunderstorm 7 miles southeast of Monroe, moving northeast at 50 mph. Hazard: Wind gusts up to 50 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" Rock County NWS severe weather mention
Monday, May 4, 2026
1 NWS warning — wind gusts up to 50 mph
“At 447 PM CDT, Doppler radar was tracking a strong thunderstorm over Footville, or near Evansville, 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...”
- Wind 50 mph Rock County NWS severe weather mention
Monday, April 27, 2026
1 NWS warning — wind gusts up to 50 mph
“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 Rock County NWS severe weather mention
Friday, April 17, 2026
5 SPC verified storm reports — hail up to 2", 2 tornado reports
“Snapped and uprooted trees... damage to houses... and sheet metal wrapped around trees near Emerald Grove. Time estimated from radar. (MKX)”
“Multiple reports of a tornado on the ground. (MKX)”
- Tornado Tornado 5 ENE Avalon SPC verified report
- Tornado Tornado 4 SE Janesville SPC verified report
- Hail 2" 3 E Beloit SPC verified report
- Hail 1.75" Milton SPC verified report
- Hail 1" 3 NNW Footville SPC verified report
Wednesday, April 15, 2026
3 NWS warnings — hail up to 0.25", wind gusts up to 50 mph
“At 705 PM CDT, Doppler radar was tracking a strong thunderstorm capable of producing a landspout near Brodhead, moving northeast at 30 mph. Hazard: Funnel clouds and wind gusts up to 50 mph. Impact: Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Brodhead, Orfordville, Juda, and Avon.”
“At 737 PM CDT, Doppler radar was tracking a strong thunderstorm capable of producing a landspout over South Beloit, moving northeast at 40 mph. Hazard: Funnel Clouds, wind gusts up to 50 mph, and pea size hail. Impact: Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Rock County NWS severe weather mention
- Hail 0.25" Rock County NWS severe weather mention
- Hail 0.25" Rock County NWS severe weather mention
Tuesday, April 14, 2026
2 NWS warnings — hail up to 0.5", wind gusts up to 50 mph
“At 126 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...”
“At 110 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from Janesville to near Shullsburg. Movement was southeast at 60 mph. Hazard: Wind gusts up to 50 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...”
- Wind 50 mph Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
Wednesday, April 8, 2026
1 NWS warning — wind gusts up to 50 mph
“At 515 PM CDT, Doppler radar was tracking gusty showers along a line extending from 10 miles east of Fremont to near Poynette to near Darlington. 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. Locations impacted include...”
- Wind 50 mph Rock County NWS severe weather mention
Friday, April 3, 2026
1 NWS warning — hail up to 0.75"
“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 0.75" Rock County NWS severe weather mention
Thursday, April 2, 2026
1 SPC verified storm report — hail up to 1.5"
- Hail 1.5" 2 NNE Janesville SPC verified report
Wednesday, April 1, 2026
1 SPC verified storm report
“Tree down by Gibbs Lake reported by Rock County Dispatchers. Time estimated by radar. (MKX)”
- Wind Unknown 6 E Evansville SPC verified report
Tuesday, March 31, 2026
7 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 Rock County NWS severe weather mention
- Hail 0.88" Rock County NWS severe weather mention
- Hail 0.75" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
- Hail 0.5" Rock County NWS severe weather mention
- Hail 0.5" Rock 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 Rock 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 Rock County NWS severe weather mention
- Wind 60 mph Rock County NWS severe weather mention
- Wind 60 mph Rock County NWS severe weather mention
- Wind 50 mph Rock 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 Rock County NWS severe weather mention
Tuesday, March 10, 2026
1 NWS warning — 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...”
- Hail 0.75" Rock County NWS severe weather mention
Monday, March 9, 2026
1 SPC verified storm report — hail up to 1"
- Hail 1" 1 SSW Beloit SPC verified report
Sunday, December 28, 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 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 Rock 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 Rock County NWS severe weather mention
Tuesday, September 23, 2025
1 NWS warning — hail up to 0.88"
“At 1201 AM CDT, Doppler radar was tracking a strong thunderstorm over Janesville, moving southeast at 15 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 0.88" Rock County NWS severe weather mention
Today's severe weather outlook
Common questions
When was the last severe storm in Rock County, WI?
The most recent recorded event was on Aug 11, 2026. Official NWS and SPC records show 60 severe weather events in Rock 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 Rock 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 Rock 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.