/ Storm field report · Lake

Hail in Lake Zurich · Jul 27, 2026

The estimated-size surface reached 1.5" aloft; NEXRAD logged no point detections over Lake Zurich that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 1.5" ≈ ping-pong ball · radar-estimated size aloft
Homes in the hail footprint 28,969
Ground reports 0 none filed
Radar surfaces 1 Estimated size only

Convective day · Jul 27, 2026 · noon–noon UTC

Severity

The 2nd most severe storm Lake Zurich has seen in the last 12 months

Composite score · 4.5 / 10
Storm severity score

Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.

4.5 /10
Peak hail signal
38 /100

Largest radar-indicated size — a signal of damage potential, not confirmation.

Homes exposed
89 /100

How many homes sit inside the storm's footprint.

Ground truth
0 /100

Independent storm reports filed with the NWS.

Evidence / storm surfaces

How Lake Zurich saw the hail — from two instruments

Jul 27, 2026 · Lake Zurich, 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.

Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Lake Zurich, IL on Jul 27, 2026 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"

Only the radar-estimated size surface resolved for Jul 27, 2026 — this storm produced no NEXRAD point detections over Lake Zurich, so there is one map to show, not two.

The storm in context

Where Jul 27, 2026 sits in Lake Zurich's hail record.

This was Lake Zurich's 4th recorded hail day, arriving 24 days after the Jul 3, 2026 storm. By severity it ranks 2nd of the 5 storms we have logged here. Radar put the day's largest stone over Lake Zurich at 1.5" — radar-estimated size aloft.

The Jul 27, 2026 convective day was bigger than Lake Zurich: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Long Grove (3 miles east, up to 1.5"); Hoffman Estates (7 miles south, up to 1.75"); Lake Forest (8 miles northeast, up to 1.5").

These maps are stills. In the app this date is one of 5 Lake Zurich 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

No 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.

For this storm over Lake Zurich, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.

High damage potential

What 1.5" hail means for Lake Zurich 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.

28,969 homes × $12,000 avg. claim

Potential roof exposure

$348M

Potential roof exposure — 28,969 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
145 jobs
Illustrative work
~$2.2M

Close just 0.5% of the 28,969 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 $6,083 on top of the $150 plan.

Lake Zurich hail history

5 recorded storm days in Lake Zurich, IL

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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 10, 2026.