Hail and tornadoes in Boone County, IL

Since January 2021, radar estimated hail somewhere in Boone County, IL on 43 days. The biggest estimate: 2 in or larger (hen egg), on Tue, Apr 14, 2026. Hail was reported to the National Weather Service inside the county on 7 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail

since January 2021

1 inch or larger

days, estimated or reported

Largest radar estimate

2+ in

Tue, Apr 14, 2026

Largest reported

1.75 in

Tue, Apr 14, 2026

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 53 hail reports in Boone County, IL on 36 days, 1 of them 2 inches or larger. The largest: 2 in, near Belvidere, on Sat, Apr 12, 2014.

By decade: 2000s: 11 · 2010s: 23 · 2020s: 19

Tornadoes since 1950

20 tornadoes have touched Boone County, IL since 1950, 1 of them rated F3/EF3 or stronger. They killed 1 and injured 44.

Strongest

Mon, Jan 7, 2008 · EF3 · 6.8 mi long, 100 yd wide · near Poplar Grove · 4 injuries
Mon, Nov 22, 2010 · EF2 · 13.3 mi long, 200 yd wide · near Argyle
Fri, Mar 31, 2023 · EF1 · 14.01 mi long, 600 yd wide · near Irene · 1 death, 40 injuries
Fri, Mar 31, 2023 · EF1 · 13.54 mi long, 150 yd wide · near Caledonia
Mon, Aug 10, 2020 · EF1 · 3.15 mi long, 300 yd wide · near Caledonia

Most recent

Tue, Jun 3, 2025 · EF0 · 0.31 mi long, 75 yd wide · near Belvidere
Tue, May 7, 2024 · EF0 · 5.3 mi long, 50 yd wide · near Blaine
Wed, Jul 12, 2023 · EF0 · 2.46 mi long, 175 yd wide · near Argyle
Fri, Mar 31, 2023 · EF1 · 13.54 mi long, 150 yd wide · near Caledonia
Fri, Mar 31, 2023 · EF1 · 14.01 mi long, 600 yd wide · near Irene · 1 death, 40 injuries
Sat, Apr 30, 2022 · EFU · 0.12 mi long, 30 yd wide · near Blaine
Sat, Apr 30, 2022 · EF0 · 0.5 mi long, 60 yd wide · near Candlewick Lake
Mon, Aug 10, 2020 · EF1 · 3.15 mi long, 300 yd wide · near Caledonia
Wed, Jun 28, 2017 · EF1 · 1.64 mi long, 100 yd wide · near Belvidere
Wed, Jun 28, 2017 · EF1 · 5.5 mi long, 200 yd wide · near Irene

By decade: 2000s: 3 · 2010s: 9 · 2020s: 8

Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.

Every hail day since January 2021

Tue, Oct 13, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Aug 21, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
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: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jul 4, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jul 3, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jun 11, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jun 10, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Apr 17, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Apr 15, 2026
Reported in the county
- 1 in (Poplar Grove, IL)
Tue, Apr 14, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1.75 in (1 WNW Belvidere, IL)
Mon, Mar 30, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Dec 4, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 18, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 16, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (2 SE Belvidere, IL)
Thu, Jul 10, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Thu, May 15, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (1 W Belvidere, IL)
- 1 in (Caledonia, IL)
Tue, Aug 27, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 23, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sun, Jul 14, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
Tue, Jun 25, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
Tue, May 7, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Aug 16, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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, Jul 26, 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: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 28, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (1 NNE Belvidere, IL)
Tue, Apr 4, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Sep 20, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Sat, Sep 3, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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: 1.5 in or larger (ping-pong ball)
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.
Fri, May 13, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Apr 30, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1.5 in (5 NNE FAIRDALE, IL)
Tue, Feb 22, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
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
- 1.75 in (1 NNW TIMBERLANE, IL)
Tue, Aug 24, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
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: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 27, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Mar 17, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.

Check your own address →Weather in Boone County, IL now →Get warned before the next storm →

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.