/ Storm field report · Wilson

Hail in Altoona · Jul 10, 2026

NEXRAD logged 0 hail signatures up to 1.75"; the estimated-size surface reached 0.75" aloft. Open it on the live map to see the swath over the streets.

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Peak hail signal 1.75" ≈ golf ball · the largest NEXRAD radar signature

Homes in the hail footprint 1,128

Ground reports 1 1 wind

Radar surfaces 2 NEXRAD + estimated size

Convective day · Jul 10, 2026 · noon–noon UTC

Severity

The 2nd most severe storm Altoona 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: 44 /100
Homes exposed: 61 /100
Ground truth: 17 /100

Evidence / storm surfaces

How Altoona saw the hail — from two instruments

Jul 10, 2026 · Altoona, KS

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-signature map of the hail storm over Altoona, KS on Jul 10, 2026 — 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 1.75" Detections 0

Radar-estimated hail-size map of the storm over Altoona, KS on Jul 10, 2026 — 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 Jul 10, 2026 sits in Altoona's hail record.

This was Altoona's 10th recorded hail day, arriving 24 days after the Jun 16, 2026 storm. By severity it ranks 2nd of the 12 storms we have logged here. Radar put the day's largest stone over Altoona at 1.75" — the largest NEXRAD radar signature.

The Jul 10, 2026 convective day was bigger than Altoona: the same system put hail over 682 other tracked cities, 56 of them in Kansas. Nearest: Benedict (5 miles west, up to 1.75"); Thayer (11 miles southeast, up to 1.75"); Fredonia (13 miles southwest, up to 2.5").

These maps are stills. In the app this date is one of 12 Altoona 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 70 mph

4 E Fredonia Wilson County

3:52 AM UTC

“Delayed Report. (ICT)”
— 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 Fredonia — beyond Altoona itself.

High damage potential

What 1.75" hail means for Altoona 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.

1,128 homes × $12,000 avg. claim

Potential roof exposure

$14M

Potential roof exposure — 1,128 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs: 6 jobs
Illustrative work: ~$90K

Close just 0.5% of the 1,128 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

July 2028

Claims from this storm can typically be filed until around July 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 $237 on top of the $150 plan.

Altoona hail history

12 recorded storm days in Altoona, KS

← All hail in Altoona

Radar-estimated hail-size map of the storm over Altoona, KS on Sep 12, 2026

Estimated-size surface

Storm date Altoona / KS

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Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.

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Open this storm on the live map → Start free trial

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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 13, 2026.

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

How Altoona saw the hail — from two instruments

Where Jul 10, 2026 sits in Altoona's hail record.

What people on the ground reported

Wind reports

How the storm moved

What 1.75" hail means for Altoona roofs.

What this storm is worth to a roofer.

Other storms in Altoona.

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The next storm won’t wait for you.