The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Olney that day. 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 · Jun 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.
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.
Only the radar-estimated size surface resolved for Jun 21, 2026 — this storm produced no NEXRAD point detections over Olney, so there is one map to show, not two.
The storm in context
This was Olney's 7th recorded hail day, arriving 12 days after the Jun 9, 2026 storm. By severity it ranks 4th of the 10 storms we have logged here. Radar put the day's largest stone over Olney at 0.75" — radar-estimated size aloft.
The Jun 21, 2026 convective day was bigger than Olney: the same system put hail over 415 other tracked cities, 27 of them in Illinois. Nearest: Sumner (11 miles east, up to 0.75"); Dundas (14 miles north, up to 0.75"); Albion (17 miles south, up to 0.5").
These maps are stills. In the app this date is one of 10 Olney 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.
“EF1... max wind 95 mph... path length 3.2 miles... max width 300 yards The tornado developed 3 miles to the southwest of Hadley. It traveled east through farmland... da (ILX)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Claremont — beyond Olney itself.
Near the severe threshold
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
Potential roof exposure
$8.2M
Potential roof exposure — 684 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 684 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
June 2028
Claims from this storm can typically be filed until around June 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 $144 on top of the $150 plan.
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NEXRAD surface 
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NEXRAD surface Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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