Hail in Mason City · Jun 11, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Mason City that day. Open it on the live map to see the swath over the streets.
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Convective day · Jun 11, 2026 · noon–noon UTC
Severity
The 6th most severe storm Mason City has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 19 /100
- Homes exposed
- 56 /100
- Ground truth
- 0 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Mason City saw the hail — from two instruments
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Only the radar-estimated size surface resolved for Jun 11, 2026 — this storm produced no NEXRAD point detections over Mason City, so there is one map to show, not two.
The storm in context
Where Jun 11, 2026 sits in Mason City's hail record.
This was Mason City's 7th recorded hail day, arriving 1 day after the Jun 10, 2026 storm. By severity it ranks 6th of the 8 storms we have logged here. Radar put the day's largest stone over Mason City at 0.75" — radar-estimated size aloft.
The Jun 11, 2026 convective day was bigger than Mason City: the same system put hail over 648 other tracked cities, 157 of them in Illinois. Nearest: San Jose (9 miles northeast, up to 0.75"); Middletown (9 miles southeast, up to 0.5"); Green Valley (14 miles north, up to 0.75").
These maps are stills. In the app this date is one of 8 Mason City storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
Nobody on the ground filed a report over Mason City for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Near the severe threshold
What 0.75" hail means for Mason City roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$7.2M
Potential roof exposure — 599 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 3 jobs
- Illustrative work
- ~$45K
Close just 0.5% of the 599 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
June 2028
Claims from this storm can typically be filed until around June 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $126 on top of the $150 plan.
Mason City hail history
Other storms in Mason City.
Estimated-size surface Aug 21, 2026
0.75"
Estimated-size surface Jun 10, 2026
0.5"
Estimated-size surface May 4, 2026
1"
Estimated-size surface Apr 3, 2026
4"
Estimated-size surface Mar 31, 2026
1"
NEXRAD surface Mar 26, 2026
Estimated-size surface Mar 15, 2026
1.25"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.