Hail in Mason City · Mar 26, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Convective day · Mar 26, 2026 · noon–noon UTC
Severity
The 8th 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
- 0 /100
- Homes exposed
- 0 /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
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Only the NEXRAD radar-signature surface resolved for Mar 26, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
The storm in context
Where Mar 26, 2026 sits in Mason City's hail record.
This was Mason City's 2nd recorded hail day, arriving 11 days after the Mar 15, 2026 storm. By severity it ranks 8th of the 8 storms we have logged here. Radar put the day's largest stone over Mason City at 0" — radar-estimated size aloft.
The Mar 26, 2026 convective day was bigger than Mason City: the same system put hail over 316 other tracked cities, 103 of them in Illinois. Nearest: Lincoln (21 miles east, up to 0"); Riverton (23 miles southeast, up to 0"); Pleasant Plains (25 miles south, up to 1").
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.
For this storm over Mason City, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
Below the severe threshold
What 0" hail means for Mason City roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Mason City hail history
Other storms in Mason City.
Estimated-size surface Aug 21, 2026
0.75"
Estimated-size surface Jun 11, 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"
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.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.