“Personal weather station gusted to 68 mph. (TWC)”
— NOAA / SPC storm report
Hail in Tucson · Jul 12, 2026
NEXRAD logged 128 hail signatures up to 2.5"; the estimated-size surface reached 1.25" aloft. At 2.5" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
Convective day · Jul 12, 2026 · noon–noon UTC
Severity
The most severe storm Tucson 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
- 63 /100
- Homes exposed
- 90 /100
- Ground truth
- 67 /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 Tucson saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar signature field The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
The storm in context
Where Jul 12, 2026 sits in Tucson's hail record.
This was Tucson's 5th recorded hail day, arriving 1 day after the Jul 11, 2026 storm. By severity it ranks 1st of the 18 storms we have logged here. Radar put the day's largest stone over Tucson at 2.5" — the largest NEXRAD radar signature.
The Jul 12, 2026 convective day was bigger than Tucson: the same system put hail over 367 other tracked cities, 37 of them in Arizona. Nearest: Vail (16 miles southeast, up to 1.75"); Benson (25 miles southeast, up to 1.5"); Sells (29 miles west, up to 1.5").
These maps are stills. In the app this date is one of 18 Tucson 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.
Wind reports
4 reports“Mesonet station QSGA3 Saguaro. (TWC)”
— NOAA / SPC storm report
“63 mph wind gust measured at personal weather station. (TWC)”
— NOAA / SPC storm report
“ASOS station KTUS Tucson International Airport. (TWC)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
The storm tracked west at roughly 30 mph, based on the timing of ground reports.
Hail was reported over 96 minutes, from to .
Reports came from Avra Valley — beyond Tucson itself.
Severe hail signal
What 2.5" hail means for Tucson roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$375M
Potential roof exposure — 31,243 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 156 jobs
- Illustrative work
- ~$2.3M
Close just 0.5% of the 31,243 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
July 2028
Claims from this storm can typically be filed until around July 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $6,561 on top of the $150 plan.
Tucson hail history
Other storms in Tucson.
Estimated-size surface Sep 14, 2026
0.75"
Estimated-size surface Sep 12, 2026
0.75"
Estimated-size surface Aug 27, 2026
0.75"
Estimated-size surface Aug 23, 2026
0.75"
Estimated-size surface Aug 21, 2026
0.75"
Estimated-size surface Aug 19, 2026
1.5"
Estimated-size surface Aug 10, 2026
1"
Estimated-size surface Aug 9, 2026
0.5"
Estimated-size surface Aug 7, 2026
0.5"
Estimated-size surface Aug 5, 2026
1.75"
Estimated-size surface Jul 27, 2026
Estimated-size surface Jul 25, 2026
Estimated-size surface Jul 17, 2026
0.5"
Estimated-size surface Jul 11, 2026
1"
Estimated-size surface Jul 8, 2026
1.75"
Estimated-size surface Jun 25, 2026
Estimated-size surface Jun 17, 2026
1"The next storm won’t wait for you.
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