Hail in Happy Jack · Aug 11, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Happy Jack that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 11, 2026 · noon–noon UTC
Severity
The 5th most severe storm Happy Jack 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
- 13 /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 Happy Jack 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 Aug 11, 2026 — this storm produced no NEXRAD point detections over Happy Jack, so there is one map to show, not two.
The storm in context
Where Aug 11, 2026 sits in Happy Jack's hail record.
This was Happy Jack's 5th recorded hail day, arriving 4 days after the Aug 7, 2026 storm. By severity it ranks 5th of the 6 storms we have logged here. Radar put the day's largest stone over Happy Jack at 0.5" — radar-estimated size aloft.
The Aug 11, 2026 convective day was bigger than Happy Jack: the same system put hail over 1,041 other tracked cities, 8 of them in Arizona. Nearest: Forest Lakes (36 miles southeast, up to 0.5"); Flagstaff (44 miles north, up to 0.5"); Show Low (67 miles southeast, up to 0.5").
These maps are stills. In the app this date is one of 6 Happy Jack 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 Happy Jack 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.
Below the severe threshold
What 0.5" hail means for Happy Jack 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
Happy Jack hail history
Other storms in Happy Jack.
Aug 23, 2026
0.5"
Estimated-size surface Aug 7, 2026
0.5"
Estimated-size surface Aug 6, 2026
0.75"
Estimated-size surface Jul 30, 2026
1.25"
Estimated-size surface Jul 20, 2026
0.75"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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