/ Storm field report · LaSalle

Hail in Sheridan · Apr 2, 2026

NEXRAD logged 0 hail signatures up to 1"; 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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Peak hail signal 1" ≈ quarter · the largest NEXRAD radar signature
Homes in the hail footprint 0
Ground reports 1 1 wind
Radar surfaces 1 NEXRAD only

Convective day · Apr 2, 2026 · noon–noon UTC

Severity

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

Composite score · 1.8 / 10
Storm severity score

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

1.8 /10
Peak hail signal
25 /100

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

Homes exposed
0 /100

How many homes sit inside the storm's footprint.

Ground truth
17 /100

Independent storm reports filed with the NWS.

Evidence / storm surfaces

How Sheridan saw the hail — from two instruments

Apr 2, 2026 · Sheridan, IL

We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.

NEXRAD radar signatures Surface resolved
NEXRAD radar-signature map of the hail storm over Sheridan, IL on Apr 2, 2026 Radar signature field

NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.

Max size 1" Detections 0

Only the NEXRAD radar-signature surface resolved for Apr 2, 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 2, 2026 sits in Sheridan's hail record.

This was Sheridan's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 2nd of the 3 storms we have logged here. Radar put the day's largest stone over Sheridan at 1" — the largest NEXRAD radar signature.

The Apr 2, 2026 convective day was bigger than Sheridan: the same system put hail over 160 other tracked cities, 84 of them in Illinois. Nearest: Seneca (7 miles south, up to 0"); Serena (8 miles west, up to 1"); Marseilles (9 miles southwest, up to 0").

These maps are stills. In the app this date is one of 3 Sheridan 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

1 report 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.

Wind reports

1 report
Wind gust 65 mph
3 ENE Norway La Salle County

“Measured at an Ambient Personal Weather station. (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.

Reports came from Norway — beyond Sheridan itself.

Damage-capable hail signal

What 1" hail means for Sheridan roofs.

Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.

Radar reading · not confirmed damage

Sheridan hail history

3 recorded storm days in Sheridan, 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 12, 2026.