Storm report · McHenry

Hail in Island Lake Apr 17, 2026

NEXRAD caught this storm: 0 hail signatures up to 0". The radar-estimated size surface had no signal to model this day.

Largest hailstone

0"

≈ pea to penny · radar-estimated size aloft
Homes in the hail footprint

0

Ground reports

0

none filed
Severity

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

Storm severity score

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

0.0 /10
Hail size
0 /100

Largest hailstone — the top predictor of roof damage.

Homes exposed
0 /100

How many homes sit inside the storm's footprint.

Ground truth
0 /100

Independent storm reports filed with the NWS.

Two ways to read the storm

How Island Lake saw the hail — from two instruments

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.

NEXRAD radar signatures
NEXRAD radar-signature map of the hail storm over Island Lake, IL on Apr 17, 2026

Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.

Max size 0" Detections 0

Only the NEXRAD radar-signature surface resolved for Apr 17, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.

The storm in context

Where Apr 17, 2026 sits in Island Lake's hail record

This was Island Lake's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 2nd of the 2 storms we have logged here. Radar put the day's largest stone over Island Lake at 0" — radar-estimated size aloft.

The Apr 17, 2026 convective day was bigger than Island Lake: the same system put hail over 1,016 other tracked cities, 101 of them in Illinois. Nearest: Grayslake (5 miles east, up to 0"); Lake In The Hills (10 miles southwest, up to 0"); Lake Villa (12 miles northeast, up to 1").

These maps are stills from Island Lake's Apr 17, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.

Ground reports

What people on the ground reported

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.

The National Weather Service logged no spotter reports for this storm over Island Lake. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.

Below the severe threshold

What 0" hail means for Island Lake roofs

Hail under three-quarters of an inch stays below the National Weather Service severe threshold and rarely breaks shingles outright. But repeated small-hail events accelerate granule loss and shorten roof life — on older roofs, it's still worth a conversation.

Track hail over Island Lake on the live map

Radar updates in real time, spotter reports appear on the map as they're filed, and the full Island Lake storm history — this Apr 17, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.

Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing

Island Lake hail history

2 recorded storm days in Island Lake, IL

← All hail in Island Lake

Other storms in Island Lake

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 surfaces are detections and estimates, not confirmed damage. Last updated Aug 2, 2026.