/ Storm field report · Faribault

Hail in Winnebago · Sep 1, 2026

Hit 11 days ago

The estimated-size surface reached 1.5" aloft; NEXRAD logged no point detections over Winnebago that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 1.5" ≈ ping-pong ball · radar-estimated size aloft
Homes in the hail footprint 5,150
Ground reports 1 1 hail
Radar surfaces 1 Estimated size only

Convective day · Sep 1, 2026 · noon–noon UTC

Severity

The 3rd most severe storm Winnebago has seen in the last 12 months

Composite score · 4.4 / 10
Storm severity score

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

4.4 /10
Peak hail signal
38 /100

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

Homes exposed
74 /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 Winnebago saw the hail — from two instruments

Sep 1, 2026 · Winnebago, MN

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-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Winnebago, MN on Sep 1, 2026 Estimated size field

The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.

Max size 1.5"

Only the radar-estimated size surface resolved for Sep 1, 2026 — this storm produced no NEXRAD point detections over Winnebago, so there is one map to show, not two.

The storm in context

Where Sep 1, 2026 sits in Winnebago's hail record.

This was Winnebago's 12th recorded hail day, arriving 24 days after the Aug 8, 2026 storm. By severity it ranks 3rd of the 14 storms we have logged here. Radar put the day's largest stone over Winnebago at 1.5" — radar-estimated size aloft.

The Sep 1, 2026 convective day was bigger than Winnebago: the same system put hail over 362 other tracked cities, 56 of them in Minnesota. Nearest: Delavan (7 miles east, up to 1.5"); Blue Earth (7 miles south, up to 1.5"); Mapleton (10 miles northeast, up to 0.75").

These maps are stills. In the app this date is one of 14 Winnebago 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.

Hail reports

1 report
Hail size 1.75"
2 W Delavan Faribault County

“(MPX)”

— 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 Delavan — beyond Winnebago itself.

High damage potential

What 1.5" hail means for Winnebago roofs.

Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

5,150 homes × $12,000 avg. claim

Potential roof exposure

$62M

Potential roof exposure — 5,150 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
26 jobs
Illustrative work
~$390K

Close just 0.5% of the 5,150 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

September 2028

Claims from this storm can typically be filed until around September 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 $1,082 on top of the $150 plan.

Winnebago hail history

14 recorded storm days in Winnebago, MN
Radar-estimated hail-size map of the storm over Winnebago, MN on Sep 7, 2026 Estimated-size surface
Storm date Winnebago / MN

Sep 7, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Sep 6, 2026 Estimated-size surface
Storm date Winnebago / MN

Sep 6, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Aug 8, 2026 Estimated-size surface
Storm date Winnebago / MN

Aug 8, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Aug 7, 2026 Estimated-size surface
Storm date Winnebago / MN

Aug 7, 2026

1.75"
Estimated 1.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Jul 19, 2026 Estimated-size surface
Storm date Winnebago / MN

Jul 19, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Jun 29, 2026 Estimated-size surface
Storm date Winnebago / MN

Jun 29, 2026

1"
Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Jun 28, 2026 Estimated-size surface
Storm date Winnebago / MN

Jun 28, 2026

0.75"
Signatures 0.75" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Jun 27, 2026 Estimated-size surface
Storm date Winnebago / MN

Jun 27, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on May 25, 2026 Estimated-size surface
Storm date Winnebago / MN

May 25, 2026

1"
Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on May 18, 2026 Estimated-size surface
Storm date Winnebago / MN

May 18, 2026

1.5"
Signatures 1.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on May 17, 2026 Estimated-size surface
Storm date Winnebago / MN

May 17, 2026

2.5"
Signatures 2.5" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on May 15, 2026 Estimated-size surface
Storm date Winnebago / MN

May 15, 2026

1.75"
Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Winnebago, MN on Apr 13, 2026 Estimated-size surface
Storm date Winnebago / MN

Apr 13, 2026

2.75"
Signatures 2.75" Estimated 1.5"
1 ground report Open report →

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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 Sep 8, 2026.