Hail in Mayer · Sep 12, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0.5" aloft. Open it on the live map to see the swath over the streets.
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Convective day · Sep 12, 2026 · noon–noon UTC
Severity
The 10th most severe storm Mayer 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 Mayer saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
The storm in context
Where Sep 12, 2026 sits in Mayer's hail record.
This was Mayer's 10th recorded hail day, arriving 14 days after the Aug 29, 2026 storm. By severity it ranks 10th of the 11 storms we have logged here. Radar put the day's largest stone over Mayer at 0.5" — radar-estimated size aloft.
The Sep 12, 2026 convective day was bigger than Mayer: the same system put hail over 354 other tracked cities, 19 of them in Arizona. Nearest: Dewey (11 miles north, up to 0.75"); Flagstaff (80 miles northeast, up to 0.75"); Cibecue (103 miles east, up to 0.5").
These maps are stills. In the app this date is one of 11 Mayer 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.
No ground reports were filed with the National Weather Service for this storm over Mayer. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Below the severe threshold
What 0.5" hail means for Mayer 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 13, 2026
1.25"
Estimated-size surface Aug 29, 2026
0.5"
Estimated-size surface Aug 19, 2026
1"
Estimated-size surface Aug 10, 2026
0.75"
Estimated-size surface Aug 8, 2026
0.5"
Estimated-size surface Jul 26, 2026
1"
Estimated-size surface Jul 12, 2026
2.5"
Estimated-size surface Jun 15, 2026
0.75"
Estimated-size surface Jun 14, 2026
0.5"
Estimated-size surface May 25, 2026
0.5"Take your next area into the field.
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