Hail size 1.25"
4 W Shorewood Kendall County
“Relayed via mping. (LOT)”
— NOAA / SPC storm report
/ Storm field report · Will
Hail in Joliet · Jul 27, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 1.75" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · radar-estimated size aloft
Homes in the hail footprint 25,360
Ground reports 6 6 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · Jul 27, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Joliet has seen in the last 12 months
Composite score · 6.3 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.3 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 88 /100
- Ground truth
- 100 /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 Joliet saw the hail — from two instruments
Jul 27, 2026 · Joliet, IL
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
NEXRAD radar signatures Surface resolved
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Max size
0"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Max size
1.75"
The storm in context
Where Jul 27, 2026 sits in Joliet's hail record.
This was Joliet's 4th recorded hail day, arriving 24 days after the Jul 3, 2026 storm. By severity it ranks 2nd of the 4 storms we have logged here. Radar put the day's largest stone over Joliet at 1.75" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Joliet: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: New Lenox (5 miles east, up to 2.75"); Shorewood (5 miles west, up to 1.75"); Romeoville (7 miles north, up to 3").
These maps are stills. In the app this date is one of 4 Joliet 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
6 reports filed with the NWS
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.
Hail reports
6 reports Hail size 3"
2 WSW Shorewood Will County
“Photo shows hail stone at least 3 inches in diameter that fell near Four Seasons Park in Shorewood. Hail stone was collected and frozen 2 minutes after it fell. Multipl (LOT)”
— NOAA / SPC storm report
Hail size 2.25"
2 N Shorewood Will County
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Hail size 1.25"
2 SW Crystal Lawns Will County
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Hail size 2"
1 SE Minooka Will County
“Public report of hen egg size hail near Minooka. Time estimated by radar. Relayed via mping. (LOT)”
— NOAA / SPC storm report
Hail size 1.5"
1 S Shorewood Will County
“(LOT)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Hail was reported over 11 minutes, from to .
Reports came from Shorewood, Crystal Lawns, and Minooka — beyond Joliet itself.
High damage potential
What 1.75" hail means for Joliet roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
25,360 homes × $12,000 avg. claim
Potential roof exposure
$304M
Potential roof exposure — 25,360 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 127 jobs
- Illustrative work
- ~$1.9M
Close just 0.5% of the 25,360 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 $5,326 on top of the $150 plan.
Joliet hail history
Other storms in Joliet.
4 recorded storm days in Joliet, IL
Estimated-size surface Storm date Joliet / IL
Jul 3, 2026
1.5" Signatures 1.5" Estimated 0.75"
3 ground reports Open report →
Estimated-size surface Storm date Joliet / IL
Jul 2, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Joliet / IL
Mar 31, 2026
2.5" Signatures 2.5" Estimated 1.25"
5 ground reports Open report →
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A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Aug 3, 2026.