Hail and tornadoes in Jefferson County, WI
Since October 2020, radar estimated hail somewhere in Jefferson County, WI on 50 days. The biggest estimate: 3 in or larger (teacup), on Mon, Jun 13, 2022. Hail was reported to the National Weather Service inside the county on 14 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 159 hail reports in Jefferson County, WI on 79 days, 14 of them 2 inches or larger. The largest: 4.25 in, near Jefferson, on Wed, May 11, 2011.
By decade: 1990s: 11 · 2000s: 67 · 2010s: 39 · 2020s: 42
Tornadoes since 1950
36 tornadoes have touched Jefferson County, WI since 1950, none of them rated F3/EF3 or stronger.
Strongest
- Sat, Jun 22, 2024 · EF1 · 2.05 mi long, 150 yd wide · near Hubbleton
- Thu, Feb 8, 2024 · EF1 · 6.08 mi long, 400 yd wide · near Busseyville
- Fri, Jul 28, 2023 · EF1 · 0.81 mi long, 90 yd wide · near Palmyra
- Fri, Mar 31, 2023 · EF1 · 2.51 mi long, 50 yd wide · near Palmyra
- Thu, Jul 29, 2021 · EF1 · 7.69 mi long, 200 yd wide · near Pipersville
Most recent
- Mon, Apr 13, 2026 · EF0 · 0.44 mi long, 50 yd wide · near Busseyville
- Sat, Jun 22, 2024 · EF1 · 2.05 mi long, 150 yd wide · near Hubbleton
- Sat, Jun 22, 2024 · EF0 · 1.03 mi long, 200 yd wide · near Waterloo
- Sun, May 26, 2024 · EF0 · 3.47 mi long, 50 yd wide · near Cold Spg
- Sun, May 26, 2024 · EF0 · 5.55 mi long, 30 yd wide · near Lake Koshkonong
- Thu, Feb 8, 2024 · EF1 · 6.08 mi long, 400 yd wide · near Busseyville
- Fri, Jul 28, 2023 · EF1 · 0.81 mi long, 90 yd wide · near Palmyra
- Fri, Mar 31, 2023 · EF1 · 2.51 mi long, 50 yd wide · near Palmyra
- Fri, Mar 31, 2023 · EF0 · 1.45 mi long, 75 yd wide · near Cambridge
- Wed, Oct 12, 2022 · EF0 · 0.79 mi long, 25 yd wide · near Oak Hill
By decade: 1990s: 2 · 2000s: 11 · 2010s: 7 · 2020s: 16
Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.
Every hail day since October 2020
- Tue, Aug 18, 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: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 27, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.25 in (1 SW Lac La Belle, WI)
- Fri, Apr 17, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1 in (Watertown, WI)
- Tue, Apr 14, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 2.75 in (2 SE Watertown, WI)
- 1.5 in (4 NW Lake Mills, WI)
- Fri, Feb 20, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Sep 22, 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: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Aug 9, 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: 2 in or larger (hen egg)
Reported in the county- 2.5 in (1 SE Ixonia, WI)
- Fri, Apr 18, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1.75 in (4 ENE Lake Mills, WI)
- 2 in (3 SE Fort Atkinson, WI)
- 1.25 in (2 S Watertown, WI)
- 1.75 in (1 SW Palmyra, WI)
- Thu, Apr 17, 2025Reported in the county
- 1 in (5 N Lake Mills, WI)
- Tue, Aug 27, 2024
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.
- Sat, Jul 13, 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: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jun 21, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jun 17, 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, May 4, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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.
- Thu, Feb 8, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1 in (2 SSE Lake Ripley, WI)
- Mon, Oct 23, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (Waterloo, WI)
- Thu, Aug 24, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (1 WNW Fort Atkinson, WI)
- Wed, Aug 16, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 22, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 5, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Jun 28, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, May 31, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Apr 19, 2023Reported in the county
- 1.5 in (1 E LAKE RIPLEY, WI)
- 1 in (1 NW IXONIA, WI)
- Sat, Apr 15, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Apr 4, 2023Reported in the county
- 1 in (FORT ATKINSON, WI)
- Tue, Sep 20, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 23, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jul 22, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
- Wed, Jun 15, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jun 13, 2022
Radar estimate anywhere in the county: 3 in or larger (teacup)
Reported in the county- 1.75 in (1 S JEFFERSON, WI)
- 1.25 in (2 SW WATERTOWN, WI)
- 2 in (4 SSE SULLIVAN, WI)
- Fri, Jun 10, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Thu, May 26, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Feb 22, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Feb 21, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Sep 13, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Sep 12, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Sep 7, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (2 WSW WATERTOWN, WI)
- Sat, Aug 7, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Aug 6, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.5 in (1 ESE JOHNSON CREEK, WI)
- 1.5 in (LAKE MILLS, WI)
- Fri, Jun 11, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Apr 15, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Mar 17, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.