NEXRAD logged 74 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.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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Convective day · Jul 21, 2026 · noon–noon UTC
Severity
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
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
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
The storm in context
This was Edmonton's 4th recorded hail day, arriving 11 days after the Jul 10, 2026 storm. By severity it ranks 1st of the 8 storms we have logged here. Radar put the day's largest stone over Edmonton at 2.5" — the largest NEXRAD radar signature.
The Jul 21, 2026 convective day was bigger than Edmonton: the same system put hail over 703 other tracked cities, 101 of them in Kentucky. Nearest: Glasgow (6 miles west, up to 0.5"); Horse Cave (11 miles north, up to 2.5"); Hardyville (14 miles north, up to 1.75").
These maps are stills. In the app this date is one of 8 Edmonton 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
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.
“NWS Storm Survey found an EF-0 tornado with 85 mph winds just east of Edmonton. The tornado was 4 miles in length and was on the ground for 10 minutes reaching 75 yards (LMK)”
— NOAA / SPC storm report
“An EF-1 tornado occurred in northwestern Metcalfe County... near Knob Lick on July 21. The tornado produced high end EF1 damage near Pleasant Valley Church Road and lof (LMK)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Hail was reported over 24 minutes, from to .
Reports came from Gascon and Center — beyond Edmonton itself.
Severe hail signal
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
Potential roof exposure
$33M
Potential roof exposure — 2,732 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 2,732 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 $574 on top of the $150 plan.
Edmonton hail history
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Estimated-size surface 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.