Crystal Lake, IL

Hail map for Crystal Lake, IL — July 27, 2026

NOAA radar detected hail up to 1.00″ — quarter size — within 5 miles of Crystal Lake on July 27, 2026.

Hail swath map for Crystal Lake, IL on July 27, 2026 showing 1.00 inch hail.
Max hail size
1.00″
quarter
Impact rating
3/10
from stone size
Size bands over the city
1
distinct radar bands
Reached the ground
30%
NOAA POSH probability
Measured on the ground
1.00″
10.5 mi away · Public

NOAA's Probability of Severe Hail peaked at 30% over Crystal Lake that day — low to moderate: the radar signature was there, ground impact less certain. It is a separate model from the size estimate above: one asks how big the stones were in the storm, the other asks whether they made it down.

Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

Roofing contractors

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Homeowners

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This page covers Crystal Lake as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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Other towns hit on July 27, 2026

Joliet, IL2.00″Naperville, IL2.00″Schaumburg, IL2.00″Bolingbrook, IL2.00″Appleton, WI2.00″Orland Park, IL2.00″Tinley Park, IL2.00″Oak Lawn, IL2.00″Hoffman Estates, IL2.00″Downers Grove, IL2.00″Bartlett, IL2.00″Streamwood, IL2.00″
Every Illinois city hit on July 27, 2026 →

Other hail dates for Crystal Lake

September 21, 20251.00″August 16, 20252.00″August 27, 20241.00″June 25, 20241.00″
Every storm over Crystal Lake →

What people on the ground measured in Crystal Lake, IL on July 27, 2026

3 reports filed with the National Weather Service. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

  • 1.00″ quarter size Public
    1 W West Dundee, IL · 10.5 mi away10:56 AM CDTKane County

    Report from mPING: Quarter (1.00 in.).

  • 1.00″ quarter size Public
    2 SE Wauconda, IL · 10.6 mi away12:21 PM CDTLake County

    Relayed via mping. Time estimated by radar.

  • 1.00″ quarter size Public
    1 S West Dundee, IL · 11.2 mi away10:58 AM CDTKane County

    Report from mPING: Quarter (1.00 in.).

Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.

FAQ

Crystal Lake hail on July 27, 2026

NOAA radar estimated stones up to 1.00 inches — quarter size — within about 5 miles of Crystal Lake that day, across 1 distinct size band. Sizes vary street to street inside a single swath.

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