Hail size 1.5"
1 E La Grange Park Cook County
“Relayed via mping. (LOT)”
— NOAA / SPC storm report
/ Storm field report · Cook
Hail in Berkeley · Jul 27, 2026
The estimated-size surface reached 1.75" aloft; NEXRAD logged no point detections over Berkeley that day. 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 103,934
Ground reports 6 5 hail · 1 wind
Radar surfaces 1 Estimated size only
Convective day · Jul 27, 2026 · noon–noon UTC
Severity
The most severe storm Berkeley has seen in the last 12 months
Composite score · 6.6 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.6 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 100 /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 Berkeley saw the hail — from two instruments
Jul 27, 2026 · Berkeley, 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
1.75"
Only the radar-estimated size surface resolved for Jul 27, 2026 — this storm produced no NEXRAD point detections over Berkeley, so there is one map to show, not two.
The storm in context
Where Jul 27, 2026 sits in Berkeley's hail record.
This was Berkeley's 3rd recorded hail day, arriving 24 days after the Jul 3, 2026 storm. By severity it ranks 1st of the 3 storms we have logged here. Radar put the day's largest stone over Berkeley at 1.75" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Berkeley: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Melrose Park (0 miles north, up to 1.75"); Lombard (5 miles west, up to 1.75"); Oak Park (5 miles east, up to 1.5").
These maps are stills. In the app this date is one of 3 Berkeley 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
5 reports Hail size 1.5"
1 N Oakbrook Terrace DuPage County
“Public report of ping pong ball size hail at Oakbrook Terrace. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Hail size 1.75"
Oak Brook DuPage County
“Public report of golf ball size hail in Oak Brook. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Hail size 2"
Oak Brook DuPage County
“Photo shared on social media showing a hailstone roughly two inches in diameter. (LOT)”
— NOAA / SPC storm report
Hail size 1"
Elmhurst DuPage County
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Wind reports
1 report Wind gust 72 mph
1 N Oakbrook Terrace DuPage 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 15 minutes, from to .
Reports came from La Grange Park, Oakbrook Terrace, Oak Brook, and Elmhurst — beyond Berkeley itself.
High damage potential
What 1.75" hail means for Berkeley 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.
103,934 homes × $12,000 avg. claim
Potential roof exposure
$1.2B
Potential roof exposure — 103,934 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 520 jobs
- Illustrative work
- ~$7.8M
Close just 0.5% of the 103,934 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 $21,826 on top of the $150 plan.
Berkeley hail history
Other storms in Berkeley.
3 recorded storm days in Berkeley, IL
The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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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 1, 2026.