Hail size 1"
2 NW Montgomery Kane County
“(LOT)”
— NOAA / SPC storm report
/ Storm field report · Kane
Hail in Sugar Grove · Mar 30, 2026
NEXRAD logged 0 hail signatures up to 1.75"; the estimated-size surface reached 1.5" 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 · the largest NEXRAD radar signature
Homes in the hail footprint 15,013
Ground reports 2 2 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · Mar 30, 2026 · noon–noon UTC
Severity
The most severe storm Sugar Grove has seen in the last 12 months
Composite score · 5.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.2 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 84 /100
- Ground truth
- 33 /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 Sugar Grove saw the hail — from two instruments
Mar 30, 2026 · Sugar Grove, IL
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Max size
1.75"
Detections
0
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
1.5"
The storm in context
Where Mar 30, 2026 sits in Sugar Grove's hail record.
This was Sugar Grove's 2nd recorded hail day, arriving 20 days after the Mar 10, 2026 storm. By severity it ranks 1st of the 9 storms we have logged here. Radar put the day's largest stone over Sugar Grove at 1.75" — the largest NEXRAD radar signature.
The Mar 30, 2026 convective day was bigger than Sugar Grove: the same system put hail over 313 other tracked cities, 70 of them in Illinois. Nearest: Big Rock (5 miles west, up to 2.5"); Plano (7 miles south, up to 2.5"); Yorkville (9 miles southeast, up to 1.75").
These maps are stills. In the app this date is one of 9 Sugar Grove 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
2 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
2 reports Hail size 1"
Big Rock Kane 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.
Reports came from Montgomery and Big Rock — beyond Sugar Grove itself.
High damage potential
What 1.75" hail means for Sugar Grove 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.
15,013 homes × $12,000 avg. claim
Potential roof exposure
$180M
Potential roof exposure — 15,013 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 75 jobs
- Illustrative work
- ~$1.1M
Close just 0.5% of the 15,013 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 $3,153 on top of the $150 plan.
Sugar Grove hail history
Other storms in Sugar Grove.
9 recorded storm days in Sugar Grove, IL
Estimated-size surface Storm date Sugar Grove / IL
Aug 11, 2026
0.75" Estimated 0.75"
2 ground reports Open report →
Estimated-size surface Storm date Sugar Grove / IL
Aug 9, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Sugar Grove / IL
Jul 27, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Sugar Grove / IL
Jul 4, 2026
1.75" Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Sugar Grove / IL
Jul 3, 2026
1.5" Signatures 1.5" Estimated 0.5"
2 ground reports Open report →
Estimated-size surface Storm date Sugar Grove / IL
Jul 2, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Sugar Grove / IL
Jun 10, 2026
0.75" Estimated 0.75"
1 ground report Open report →
Estimated-size surface Storm date Sugar Grove / IL
Mar 10, 2026
0.75" Estimated 0.75"
1 ground report 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.