Hail and tornadoes in DeKalb County, IL
Since January 2021, radar estimated hail somewhere in DeKalb County, IL on 59 days. The biggest estimate: 2 in or larger (hen egg), on Mon, Mar 30, 2026. Hail was reported to the National Weather Service inside the county on 11 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 67 hail reports in DeKalb County, IL on 47 days, 3 of them 2 inches or larger. The largest: 2.75 in, near Sandwich, on Tue, Apr 4, 2023.
By decade: 2000s: 20 · 2010s: 27 · 2020s: 20
Tornadoes since 1950
21 tornadoes have touched DeKalb County, IL since 1950, 1 of them rated F3/EF3 or stronger. They killed 2 and injured 11.
Strongest
- Thu, Apr 9, 2015 · EF3 · 4.83 mi long, 700 yd wide · near Fairdale · 2 deaths, 11 injuries
- Mon, Aug 9, 2021 · EF1 · 1.5 mi long, 150 yd wide · near Sycamore
- Mon, Aug 9, 2021 · EF1 · 1.8 mi long, 80 yd wide · near Kirkland
- Thu, Apr 9, 2015 · EF1 · 1.8 mi long, 100 yd wide · near Fairdale
- Wed, Jun 12, 2013 · EF1 · 2.27 mi long, 100 yd wide · near Shabbona
Most recent
- Thu, Jun 11, 2026 · EFU · 1.1 mi long, 50 yd wide · near Lee
- Mon, Jul 15, 2024 · EFU · 1.4 mi long, 50 yd wide · near Maple Park
- Sun, Jul 14, 2024 · EF0 · 3 mi long, 100 yd wide · near Esmond
- Tue, Feb 27, 2024 · EF0 · 2.59 mi long, 175 yd wide · near Hinckley
- Tue, Feb 27, 2024 · EFU · 1.3 mi long, 120 yd wide · near Waterman
- Fri, Jul 28, 2023 · EF0 · 0.45 mi long, 20 yd wide · near Sandwich
- Tue, Aug 10, 2021 · EFU · 0.6 mi long, 20 yd wide · near Esmond
- Mon, Aug 9, 2021 · EF0 · 0.2 mi long, 20 yd wide · near Maple Park
- Mon, Aug 9, 2021 · EF1 · 1.5 mi long, 150 yd wide · near Sycamore
- Mon, Aug 9, 2021 · EF0 · 3.7 mi long, 50 yd wide · near Esmond
By decade: 2000s: 2 · 2010s: 4 · 2020s: 15
Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.
Every hail day since January 2021
- Fri, Aug 21, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 E Sycamore, IL)
- Tue, Aug 11, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jul 27, 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: 1 in or larger (quarter)
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, Jul 2, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Jun 24, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 N Malta, IL)
- 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: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Apr 14, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.25 in (DeKalb, IL)
- Tue, Mar 31, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1 in (1 NNW Sandwich, IL)
- Mon, Mar 30, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
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 13, 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: 1.5 in or larger (ping-pong ball)
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.
- Thu, Jul 24, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jul 10, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Jun 26, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Jun 25, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 8, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Jan 20, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Sep 17, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Sep 11, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 22, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 14, 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.
- 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: 1 in or larger (quarter)
No hail reported in the county.
- Mon, Mar 4, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 NE Esmond, IL)
- Tue, Feb 27, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 2 in (Shabbona, IL)
- 1.25 in (1 ENE Somonauk, IL)
- Fri, Jul 28, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (1 S Sycamore, IL)
- Fri, Jul 14, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Jul 11, 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.
- Thu, Apr 20, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Apr 19, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.75 in (3 N EARLVILLE, IL)
- Tue, Apr 4, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 2 in (2 W WATERMAN, IL)
- 2.75 in (SANDWICH, IL)
- Fri, Mar 31, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jan 9, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sat, Dec 17, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sun, Sep 18, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Aug 28, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1.5 in (4 N WATERMAN, IL)
- Sat, Jul 23, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- 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)
Reported in the county- 1 in (2 SSE GENOA, IL)
- Mon, Jul 4, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, May 14, 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: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Feb 22, 2022
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Mon, Feb 21, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Sep 25, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Tue, Sep 7, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, Aug 11, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
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.
- Tue, Jul 27, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 20, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jun 11, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
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.