Hail in Boone · Apr 3, 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.
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Convective day · Apr 3, 2026 · noon–noon UTC
Severity
The 13th most severe storm Boone 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 Boone 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.
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Only the NEXRAD radar-signature surface resolved for Apr 3, 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 Apr 3, 2026 sits in Boone's hail record.
This was Boone's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 13th of the 14 storms we have logged here. Radar put the day's largest stone over Boone at 0" — radar-estimated size aloft.
The Apr 3, 2026 convective day was bigger than Boone: the same system put hail over 367 other tracked cities, 36 of them in Iowa. Nearest: Story City (17 miles northeast, up to 0"); Maxwell (28 miles east, up to 0.5"); Colo (31 miles east, up to 0.5").
These maps are stills. In the app this date is one of 14 Boone 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 Boone, 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 Boone 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
Estimated-size surface Sep 14, 2026
0.75"
Estimated-size surface Aug 12, 2026
0.5"
Estimated-size surface Aug 11, 2026
0.5"
Estimated-size surface Aug 9, 2026
0.5"
Estimated-size surface Aug 4, 2026
0.75"
Estimated-size surface Jul 20, 2026
1.75"
Estimated-size surface Jul 8, 2026
Estimated-size surface Jul 3, 2026
1"
Estimated-size surface Jun 28, 2026
1.75"
Estimated-size surface Jun 16, 2026
0.75"
Estimated-size surface Jun 10, 2026
1.25"
Estimated-size surface Apr 23, 2026
1.75"
Estimated-size surface Apr 15, 2026
0.75"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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