Hail in Mammoth · Jul 13, 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 · Jul 13, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Mammoth 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 Mammoth 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.
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.
The storm in context
Where Jul 13, 2026 sits in Mammoth's hail record.
This was Mammoth's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 3rd of the 5 storms we have logged here. Radar put the day's largest stone over Mammoth at 0.5" — radar-estimated size aloft.
The Jul 13, 2026 convective day was bigger than Mammoth: the same system put hail over 92 other tracked cities, 9 of them in Arizona. Nearest: San Manuel (9 miles southeast, up to 0.5"); Kearny (22 miles north, up to 0.75"); Florence (44 miles northwest, up to 1.25").
These maps are stills. In the app this date is one of 5 Mammoth 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 Mammoth. 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 Mammoth 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
Mammoth hail history
Other storms in Mammoth.
Estimated-size surface Aug 27, 2026
1"
NEXRAD surface Aug 26, 2026
0.5"
Estimated-size surface Aug 21, 2026
0.5"
Estimated-size surface Aug 19, 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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Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.