Hail and tornadoes in Walworth County, WI
Since January 2021, radar estimated hail somewhere in Walworth County, WI on 43 days. The biggest estimate: 2 in or larger (hen egg), on Mon, Jul 27, 2026. Hail was reported to the National Weather Service inside the county on 9 days.
Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.
Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.
Hail on record since 1955
NOAA's Storm Events database lists 95 hail reports in Walworth County, WI on 48 days, 3 of them 2 inches or larger. The largest: 2.5 in, near Williams Bay, on Wed, May 2, 2018.
By decade: 2000s: 24 · 2010s: 47 · 2020s: 24
Tornadoes since 1950
25 tornadoes have touched Walworth County, WI since 1950, none of them rated F3/EF3 or stronger.
Strongest
- Fri, Apr 17, 2026 · EF1 · 2.71 mi long, 75 yd wide · near Delavan
- Fri, Apr 17, 2026 · EF1 · 1.07 mi long, 75 yd wide · near Richmond
- Fri, Apr 17, 2026 · EF1 · 2.81 mi long, 75 yd wide · near Darien
- Wed, Apr 15, 2026 · EF1 · 2.79 mi long, 75 yd wide · near Delavan Lake
- Tue, Apr 14, 2026 · EF1 · 7.31 mi long, 75 yd wide · near Troy
Most recent
- Fri, Apr 17, 2026 · EF0 · 1.81 mi long, 50 yd wide · near Lyons Airport
- Fri, Apr 17, 2026 · EF1 · 2.71 mi long, 75 yd wide · near Delavan
- Fri, Apr 17, 2026 · EF1 · 2.81 mi long, 75 yd wide · near Darien
- Fri, Apr 17, 2026 · EF1 · 1.07 mi long, 75 yd wide · near Richmond
- Wed, Apr 15, 2026 · EF1 · 2.79 mi long, 75 yd wide · near Delavan Lake
- Tue, Apr 14, 2026 · EF1 · 7.31 mi long, 75 yd wide · near Troy
- Sat, Jun 22, 2024 · EF1 · 6.01 mi long, 150 yd wide · near Delavan Airport
- Sat, Jun 22, 2024 · EF1 · 5.26 mi long, 100 yd wide · near Linton
- Tue, May 7, 2024 · EF1 · 0.98 mi long, 50 yd wide · near Darien
- Tue, May 7, 2024 · EF0 · 5.23 mi long, 50 yd wide · near Walworth Big Foot Ar
By decade: 2000s: 2 · 2010s: 4 · 2020s: 19
Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.
Every hail day since January 2021
- Mon, Aug 10, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Aug 9, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (1 SSW Lake Geneva, WI)
- 1.25 in (3 SW Lake Geneva, WI)
- 1.5 in (2 W Pell Lake, WI)
- 1 in (3 SSE Fontana-on-Geneva, WI)
- Mon, Jul 27, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Fri, Jul 3, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Fri, Apr 17, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (3 SE Palmyra, WI)
- Wed, Apr 15, 2026Reported in the county
- 1 in (2 SE Elkhorn, WI)
- Tue, Apr 14, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Apr 3, 2026Reported in the county
- 1 in (1 SE Lake Geneva, WI)
- Thu, Apr 2, 2026Reported in the county
- 1 in (2 W Whitewater, WI)
- 2 in (2 W Whitewater, WI)
- Tue, Mar 31, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Mar 10, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Sep 20, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Aug 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Aug 9, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jul 11, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 29, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, May 15, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (3 SE Palmyra, WI)
- 2 in (East Troy, WI)
- Fri, Apr 18, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jun 24, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 16, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jun 3, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, May 7, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Apr 27, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Mar 4, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Aug 24, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, Aug 16, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jul 28, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, May 31, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Apr 4, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (1 S LAKE GENEVA, WI)
- Tue, Sep 20, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jul 23, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1 in (ELKHORN, WI)
- Fri, Jul 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 5, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 4, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Feb 22, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Sep 7, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1.5 in (1 N DELAVAN, WI)
- 1 in (1 NNW WALWORTH, WI)
- Tue, Aug 24, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Aug 11, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Aug 10, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Aug 6, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 28, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 7, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jun 19, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Fri, Jun 11, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.