/ Storm field report · Knox

Hail in Vincennes · Apr 27, 2026

NEXRAD logged 98 hail signatures up to 2"; the estimated-size surface reached 0.75" aloft. At 2" — tennis ball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.

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Peak hail signal 2" ≈ tennis ball · the largest NEXRAD radar signature
Homes in the hail footprint 6,231
Ground reports 0 none filed
Radar surfaces 2 NEXRAD + estimated size

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

Severity

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

Composite score · 4.9 / 10
Storm severity score

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

4.9 /10
Peak hail signal
50 /100

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

Homes exposed
76 /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 Vincennes saw the hail — from two instruments

Apr 27, 2026 · Vincennes, IN

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 Vincennes, IN on Apr 27, 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 2" Detections 98
Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Vincennes, IN on Apr 27, 2026 Estimated size field

Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.

Max size 0.75"

The storm in context

Where Apr 27, 2026 sits in Vincennes's hail record.

This was Vincennes's 2nd recorded hail day, arriving 36 days after the Mar 22, 2026 storm. By severity it ranks 2nd of the 9 storms we have logged here. Radar put the day's largest stone over Vincennes at 2" — the largest NEXRAD radar signature.

The Apr 27, 2026 convective day was bigger than Vincennes: the same system put hail over 1,188 other tracked cities, 125 of them in Indiana. Nearest: Decker (7 miles south, up to 2"); Saint Francisville (11 miles west, up to 1.75"); Wheatland (11 miles east, up to 1.75").

These maps are stills. In the app this date is one of 9 Vincennes 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.

No ground reports were filed with the National Weather Service for this storm over Vincennes. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.

Severe hail signal

What 2" hail means for Vincennes roofs.

Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

6,231 homes × $12,000 avg. claim

Potential roof exposure

$75M

Potential roof exposure — 6,231 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
31 jobs
Illustrative work
~$465K

Close just 0.5% of the 6,231 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 $1,309 on top of the $150 plan.

Vincennes hail history

9 recorded storm days in Vincennes, IN

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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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 27, 2026.