Hail in Waterman · Apr 21, 2026
NEXRAD logged 3 hail signatures up to 0.5"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.
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Convective day · Apr 21, 2026 · noon–noon UTC
Severity
The 6th most severe storm Waterman has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 13 /100
- Homes exposed
- 44 /100
- Ground truth
- 0 /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 Waterman 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.
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Only the NEXRAD radar-signature surface resolved for Apr 21, 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 21, 2026 sits in Waterman's hail record.
This was Waterman's 3rd recorded hail day, arriving 21 days after the Mar 31, 2026 storm. By severity it ranks 6th of the 7 storms we have logged here. Radar put the day's largest stone over Waterman at 0.5" — the largest NEXRAD radar signature.
The Apr 21, 2026 convective day was bigger than Waterman: the same system put hail over 24 other tracked cities, 3 of them in Illinois. Nearest: Yorkville (21 miles east, up to 0.5"); Orland Park (48 miles east, up to 1"); Tinley Park (53 miles east, up to 1").
These maps are stills. In the app this date is one of 7 Waterman 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
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.
Nobody on the ground filed a report over Waterman for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Below the severe threshold
What 0.5" hail means for Waterman roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$2M
Potential roof exposure — 166 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 166 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
April 2028
Claims from this storm can typically be filed until around April 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 $35 on top of the $150 plan.
Waterman hail history
Other storms in Waterman.
Estimated-size surface Aug 11, 2026
0.5"
Estimated-size surface Jul 4, 2026
1.25"
Estimated-size surface Jul 3, 2026
1.5"
Estimated-size surface Jul 2, 2026
1"
Estimated-size surface Mar 31, 2026
1.5"
Estimated-size surface Mar 30, 2026
1.75"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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