Hail and tornadoes in Calhoun County, IA

Since January 2021, radar estimated hail somewhere in Calhoun County, IA on 62 days. The biggest estimate: 2 in or larger (hen egg), on Wed, Aug 25, 2021. Hail was reported to the National Weather Service inside the county on 5 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

Wed, Aug 25, 2021

Largest reported

1 in

Thu, Oct 8, 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.

Radar-estimated hail on Wed, Aug 25, 2021 around the place, with the hail reported that day — Wed, Aug 25, 2021: radar-estimated hail around Calhoun County, IA, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 93 hail reports in Calhoun County, IA on 51 days, 10 of them 2 inches or larger. The largest: 4 in, near Rockwell City, on Mon, Jun 30, 2014.

By decade: 2000s: 34 · 2010s: 50 · 2020s: 9

Tornadoes since 1950

19 tornadoes have touched Calhoun County, IA since 1950, 1 of them rated F3/EF3 or stronger.

Strongest

Wed, Jul 14, 2021 · EF3 · 10.81 mi long, 505 yd wide · near Lake City
Wed, Dec 15, 2021 · EF2 · 11.52 mi long, 80 yd wide · near Farnhamville
Tue, Apr 16, 2024 · EF1 · 5.22 mi long, 75 yd wide · near Rands
Wed, Dec 15, 2021 · EF1 · 19.01 mi long, 100 yd wide · near Wightman
Sun, May 10, 2015 · EF1 · 18.11 mi long, 700 yd wide · near Lake City

Most recent

Tue, Apr 16, 2024 · EFU · 0.61 mi long, 30 yd wide · near Manson
Tue, Apr 16, 2024 · EF1 · 5.22 mi long, 75 yd wide · near Rands
Sat, May 13, 2023 · EFU · 0.52 mi long, 50 yd wide · near Pomeroy
Sat, May 13, 2023 · EFU · 0.62 mi long, 30 yd wide · near Knoke
Wed, Dec 15, 2021 · EF2 · 11.52 mi long, 80 yd wide · near Farnhamville
Wed, Dec 15, 2021 · EF1 · 19.01 mi long, 100 yd wide · near Wightman
Wed, Dec 15, 2021 · EFU · 1.33 mi long, 40 yd wide · near Wightman
Wed, Jul 14, 2021 · EF3 · 10.81 mi long, 505 yd wide · near Lake City
Sat, May 15, 2021 · EFU · 0.33 mi long, 30 yd wide · near Manson
Sun, May 10, 2015 · EF0 · 1.03 mi long, 400 yd wide · near Manson

By decade: 2000s: 8 · 2010s: 2 · 2020s: 9

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

Every hail day since January 2021

Thu, Oct 8, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (1 W Lake City, IA)
Fri, Sep 18, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Aug 12, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 10, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Aug 8, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Aug 6, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jul 8, 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: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Sat, Jun 27, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jun 16, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, May 15, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Apr 23, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (1 E Rockwell City, IA)
Wed, Apr 15, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Sep 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Sep 2, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Aug 17, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Aug 15, 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: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 29, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 23, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jun 19, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jun 14, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Apr 23, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Apr 22, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Apr 17, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Mar 14, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (3 SW Knierim, IA)
Wed, Sep 18, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 26, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 30, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
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, Jun 15, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 12, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, May 23, 2024
Reported in the county
- 1 in (Rockwell City, IA)
Tue, May 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Sep 23, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Aug 23, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jul 27, 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: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 3, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (5 ENE Jolley, IA)
Sat, Jun 24, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jun 3, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, May 30, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, May 5, 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: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jan 8, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Sat, Jan 7, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Aug 1, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jul 10, 2022
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Jun 14, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, Jun 5, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
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 23, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Apr 18, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Apr 12, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Dec 15, 2021
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: 1 in or larger (quarter)
No hail reported in the county.
Wed, Aug 25, 2021
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Sat, Jul 31, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Sun, Jul 25, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jul 9, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jun 24, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jun 22, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.

Check your own address →Weather in Calhoun County, IA 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.