Hail size 2"
Bradley Kankakee County
“Hail broke windows in Bradley. (LOT)”
— NOAA / SPC storm report
/ Storm field report · Kankakee
Hail in Bourbonnais · Mar 10, 2026
The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Bourbonnais 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.
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Peak hail signal 2" ≈ tennis ball · radar-estimated size aloft
Homes in the hail footprint 16,417
Ground reports 4 4 hail
Radar surfaces 1 Estimated size only
Convective day · Mar 10, 2026 · noon–noon UTC
Severity
The most severe storm Bourbonnais has seen in the last 12 months
Composite score · 6.1 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.1 /10
- Peak hail signal
- 50 /100
- Homes exposed
- 84 /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 Bourbonnais saw the hail — from two instruments
Mar 10, 2026 · Bourbonnais, 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.
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
2"
Only the radar-estimated size surface resolved for Mar 10, 2026 — this storm produced no NEXRAD point detections over Bourbonnais, so there is one map to show, not two.
The storm in context
Where Mar 10, 2026 sits in Bourbonnais's hail record.
This was Bourbonnais's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 7 storms we have logged here. Radar put the day's largest stone over Bourbonnais at 2" — radar-estimated size aloft.
The Mar 10, 2026 convective day was bigger than Bourbonnais: the same system put hail over 470 other tracked cities, 100 of them in Illinois. Nearest: Kankakee (3 miles south, up to 2"); Manteno (5 miles east, up to 2"); Grant Park (10 miles east, up to 2").
These maps are stills. In the app this date is one of 7 Bourbonnais 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
4 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
4 reports Hail size 4.5"
1 NNE Kankakee Kankakee County
“(LOT)”
— NOAA / SPC storm report
Hail size 4.5"
1 W Bourbonnais Kankakee County
“Correction to date. Public report of hail up to Grapefruit size near Plum Creek Drive and Braemer Way in Bourbonnais. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Hail size 3"
Bourbonnais Kankakee County
“Multiple public reports of hail in Bourbonnais. The largest hailstones were measured to be 3 inches in diameter. (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 10 minutes, from to .
Reports came from Bradley and Kankakee — beyond Bourbonnais itself.
Severe hail signal
What 2" hail means for Bourbonnais 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.
16,417 homes × $12,000 avg. claim
Potential roof exposure
$197M
Potential roof exposure — 16,417 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 82 jobs
- Illustrative work
- ~$1.2M
Close just 0.5% of the 16,417 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
March 2028
Claims from this storm can typically be filed until around March 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 $3,448 on top of the $150 plan.
Bourbonnais hail history
Other storms in Bourbonnais.
7 recorded storm days in Bourbonnais, IL
Estimated-size surface Storm date Bourbonnais / IL
Aug 11, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Bourbonnais / IL
Jul 27, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Bourbonnais / IL
Jun 11, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Bourbonnais / IL
Jun 7, 2026
1" Signatures 1"
No ground reports filed Open report →
Estimated-size surface Storm date Bourbonnais / IL
May 4, 2026
1" Signatures 1"
No ground reports filed Open report →
NEXRAD surface Storm date Bourbonnais / IL
Mar 31, 2026
1" Signatures 1"
No ground reports filed 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 12, 2026.