Hail and tornadoes in Cerro Gordo County, IA

Since January 2021, radar estimated hail somewhere in Cerro Gordo County, IA on 56 days. The biggest estimate: 2 in or larger (hen egg), on Thu, Jul 2, 2026. Hail was reported to the National Weather Service inside the county on 10 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

Thu, Jul 2, 2026

Largest reported

1.75 in

Thu, Oct 24, 2024

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 Thu, Jul 2, 2026 around the place, with the hail reported that day — Thu, Jul 2, 2026: radar-estimated hail around Cerro Gordo County, IA, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 132 hail reports in Cerro Gordo County, IA on 60 days, 2 of them 2 inches or larger. The largest: 2.75 in, near Rockwell, on Thu, Jul 31, 2003.

By decade: 2000s: 47 · 2010s: 60 · 2020s: 25

Tornadoes since 1950

18 tornadoes have touched Cerro Gordo County, IA since 1950, none of them rated F3/EF3 or stronger.

Strongest

Wed, Dec 15, 2021 · EF2 · 4.93 mi long, 100 yd wide · near Meservey
Tue, Apr 12, 2022 · EF1 · 4.49 mi long, 100 yd wide · near Clear Lake Jct
Mon, Jun 16, 2014 · EF1 · 3.03 mi long, 110 yd wide · near Mason City Muni
Mon, Jul 28, 2025 · EF0 · 1.64 mi long, 15 yd wide · near Clear Lake
Wed, Dec 15, 2021 · EF0 · 2.86 mi long, 40 yd wide · near Rockwell

Most recent

Mon, Jul 28, 2025 · EF0 · 1.64 mi long, 15 yd wide · near Clear Lake
Tue, Apr 12, 2022 · EF1 · 4.49 mi long, 100 yd wide · near Clear Lake Jct
Wed, Dec 15, 2021 · EF0 · 3.54 mi long, 60 yd wide · near Rock Falls
Wed, Dec 15, 2021 · EF0 · 2.86 mi long, 40 yd wide · near Rockwell
Wed, Dec 15, 2021 · EF2 · 4.93 mi long, 100 yd wide · near Meservey
Fri, Aug 27, 2021 · EFU · 2.04 mi long, 110 yd wide · near Dougherty
Fri, Aug 27, 2021 · EF0 · 2.14 mi long, 250 yd wide · near Clear Lake
Wed, Jul 14, 2021 · EF0 · 5.1 mi long, 225 yd wide · near Rockwell
Sat, Jun 9, 2018 · EF0 · 1.18 mi long, 30 yd wide · near Clear Lake Lake
Mon, Jun 16, 2014 · EF0 · 1.1 mi long, 40 yd wide · near Freeman

By decade: 2000s: 7 · 2010s: 3 · 2020s: 8

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

Every hail day since January 2021

Fri, Aug 7, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (2 WNW Thornton, IA)
Mon, Jul 20, 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.
Sat, Jul 4, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jul 2, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Wed, Jul 1, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Sun, Jun 28, 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.
Fri, May 15, 2026
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (4 NNW Swaledale, IA)
- 1 in (1 WNW Clear Lake, IA)
Mon, Apr 13, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (Mason City, IA)
Mon, Sep 22, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Tue, Sep 16, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county
- 1 in (Swaledale, IA)
Sun, Sep 14, 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: 0.75 in or larger (penny)
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: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jul 28, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jul 23, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jul 18, 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.
Fri, Jun 20, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jun 19, 2025
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county
- 1 in (3 SE Hanlontown, IA)
Thu, Jun 12, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 11, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Apr 28, 2025
Reported in the county
- 1 in (1 W Ventura, IA)
Thu, Apr 17, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Oct 24, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1.75 in (3 SSE Clear Lake, IA)
Sat, Sep 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Sep 19, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Aug 5, 2024
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Jul 23, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jul 4, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, May 23, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Aug 11, 2023
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county
- 1 in (Thornton, IA)
Fri, Jul 28, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jul 13, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Jun 24, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Jun 2, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Mar 31, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (2 S MASON CITY, IA)
Sat, Aug 6, 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: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 15, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 13, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, May 29, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, May 9, 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: 1 in or larger (quarter)
Reported in the county
- 1 in (4 SSE CLEAR LAKE, IA)
- 1 in (1 NNW MASON CITY, IA)
- 1 in (VENTURA, IA)
Sat, Oct 9, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Oct 8, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Sep 28, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Fri, Aug 27, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
Tue, Aug 24, 2021
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
Mon, Aug 23, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Aug 13, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Aug 7, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jul 14, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Wed, Jun 16, 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: 1 in or larger (quarter)
No hail reported in the county.

Check your own address →Weather in Cerro Gordo 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.