/ Storm field report · Sumner

Hail in Caldwell · Apr 23, 2026

NEXRAD logged 44 hail signatures up to 2.25"; the estimated-size surface reached 1.25" aloft. At 2.25" — 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 2.25" ≈ tennis ball · the largest NEXRAD radar signature
Homes in the hail footprint 189
Ground reports 1 1 hail
Radar surfaces 2 NEXRAD + estimated size

Convective day · Apr 23, 2026 · noon–noon UTC

Severity

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

Composite score · 4.8 / 10
Storm severity score

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

4.8 /10
Peak hail signal
56 /100

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

Homes exposed
46 /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 Caldwell saw the hail — from two instruments

Apr 23, 2026 · Caldwell, 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 signatures Surface resolved
NEXRAD radar-signature map of the hail storm over Caldwell, KS on Apr 23, 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 2.25" Detections 44
Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Caldwell, KS on Apr 23, 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 1.25"

The storm in context

Where Apr 23, 2026 sits in Caldwell's hail record.

This was Caldwell's 6th recorded hail day, arriving 6 days after the Apr 17, 2026 storm. By severity it ranks 3rd of the 18 storms we have logged here. Radar put the day's largest stone over Caldwell at 2.25" — the largest NEXRAD radar signature.

The Apr 23, 2026 convective day was bigger than Caldwell: the same system put hail over 703 other tracked cities, 147 of them in Kansas. Nearest: Medford (14 miles south, up to 2.5"); Mayfield (19 miles northeast, up to 2"); Deer Creek (21 miles southeast, up to 2.75").

These maps are stills. In the app this date is one of 18 Caldwell 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 2"
8 SSW Mayfield Sumner County

“(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 Mayfield — beyond Caldwell itself.

Severe hail signal

What 2.25" hail means for Caldwell 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.

189 homes × $12,000 avg. claim

Potential roof exposure

$2.3M

Potential roof exposure — 189 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 189 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 $40 on top of the $150 plan.

Caldwell hail history

18 recorded storm days in Caldwell, KS
Radar-estimated hail-size map of the storm over Caldwell, KS on Aug 6, 2026 Estimated-size surface
Storm date Caldwell / KS

Aug 6, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jul 11, 2026 Estimated-size surface
Storm date Caldwell / KS

Jul 11, 2026

2.25"
Signatures 2.25" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jul 4, 2026 Estimated-size surface
Storm date Caldwell / KS

Jul 4, 2026

3.25"
Signatures 3.25" Estimated 2.25"
2 ground reports Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jun 25, 2026 Estimated-size surface
Storm date Caldwell / KS

Jun 25, 2026

1"
Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jun 21, 2026 Estimated-size surface
Storm date Caldwell / KS

Jun 21, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jun 20, 2026 Estimated-size surface
Storm date Caldwell / KS

Jun 20, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jun 18, 2026 Estimated-size surface
Storm date Caldwell / KS

Jun 18, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jun 17, 2026 Estimated-size surface
Storm date Caldwell / KS

Jun 17, 2026

1"
Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Jun 13, 2026 Estimated-size surface
Storm date Caldwell / KS

Jun 13, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on May 30, 2026 Estimated-size surface
Storm date Caldwell / KS

May 30, 2026

2.25"
Signatures 2.25" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on May 29, 2026 Estimated-size surface
Storm date Caldwell / KS

May 29, 2026

No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on May 18, 2026 Estimated-size surface
Storm date Caldwell / KS

May 18, 2026

1.75"
Estimated 1.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Apr 17, 2026 Estimated-size surface
Storm date Caldwell / KS

Apr 17, 2026

2.5"
Signatures 2.5" Estimated 1.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Apr 3, 2026 Estimated-size surface
Storm date Caldwell / KS

Apr 3, 2026

1"
Signatures 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Mar 10, 2026 Estimated-size surface
Storm date Caldwell / KS

Mar 10, 2026

1.5"
Estimated 1.5"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Caldwell, KS on Mar 5, 2026 Estimated-size surface
Storm date Caldwell / KS

Mar 5, 2026

1.75"
Signatures 1.75" Estimated 0.75"
1 ground report Open report →
NEXRAD radar-signature map of the hail storm over Caldwell, KS on Mar 3, 2026 NEXRAD surface
Storm date Caldwell / KS

Mar 3, 2026

No ground reports filed 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 Aug 7, 2026.