The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Blue Mound that day. At 2" — tennis ball — 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 · Jun 17, 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
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.
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.
Only the radar-estimated size surface resolved for Jun 17, 2026 — this storm produced no NEXRAD point detections over Blue Mound, so there is one map to show, not two.
The storm in context
This was Blue Mound's 5th recorded hail day, arriving 45 days after the May 3, 2026 storm. By severity it ranks 2nd of the 6 storms we have logged here. Radar put the day's largest stone over Blue Mound at 2" — radar-estimated size aloft.
The Jun 17, 2026 convective day was bigger than Blue Mound: the same system put hail over 294 other tracked cities, 134 of them in Illinois. Nearest: Edinburg (5 miles west, up to 1.75"); Mount Auburn (7 miles north, up to 2.75"); Illiopolis (11 miles north, up to 2.5").
These maps are stills. In the app this date is one of 6 Blue Mound 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.
“EF-1... max winds 110 mph... path length 10.7 miles... width 700 yards. The tornado began in northern Christian County in the Griswold Conservation Area... causing exte (ILX)”
— NOAA / SPC storm report
“Corrects previous hail report from Boody. Photo of ping pong size hail with a ruler. Time estimated from radar. (ILX)”
— NOAA / SPC storm report
“Golf ball size hail near route 48 outside of Boody. (ILX)”
— NOAA / SPC storm report
“Photo of ping pong size hail with a ruler. (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.
Hail was reported over 60 minutes, from to .
Reports came from Boody — beyond Blue Mound 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
$14M
Potential roof exposure — 1,185 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 1,185 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 $249 on top of the $150 plan.
Blue Mound hail history
Estimated-size surface 
Estimated-size surface 
NEXRAD surface 
Estimated-size surface 
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.