/ Storm field report · Chase

Hail in Cottonwood Falls · May 18, 2026

The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Cottonwood Falls that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 0.5" ≈ pea to penny · radar-estimated size aloft
Homes in the hail footprint 62
Ground reports 0 none filed
Radar surfaces 1 Estimated size only

Convective day · May 18, 2026 · noon–noon UTC

Severity

The 11th most severe storm Cottonwood Falls has seen in the last 12 months

Composite score · 1.6 / 10
Storm severity score

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

1.6 /10
Peak hail signal
13 /100

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

Homes exposed
36 /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 Cottonwood Falls saw the hail — from two instruments

May 18, 2026 · Cottonwood Falls, KS

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 Cottonwood Falls, KS on May 18, 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 0.5"

Only the radar-estimated size surface resolved for May 18, 2026 — this storm produced no NEXRAD point detections over Cottonwood Falls, so there is one map to show, not two.

The storm in context

Where May 18, 2026 sits in Cottonwood Falls's hail record.

This was Cottonwood Falls's 7th recorded hail day, arriving 22 days after the Apr 26, 2026 storm. By severity it ranks 11th of the 13 storms we have logged here. Radar put the day's largest stone over Cottonwood Falls at 0.5" — radar-estimated size aloft.

The May 18, 2026 convective day was bigger than Cottonwood Falls: the same system put hail over 726 other tracked cities, 258 of them in Kansas. Nearest: Matfield Green (10 miles south, up to 0.75"); Cedar Point (14 miles west, up to 0.75"); Olpe (15 miles southeast, up to 1").

These maps are stills. In the app this date is one of 13 Cottonwood Falls 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 Cottonwood Falls. 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.

Below the severe threshold

What 0.5" hail means for Cottonwood Falls roofs.

Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

62 homes × $12,000 avg. claim

Potential roof exposure

$744K

Potential roof exposure — 62 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Claim window

May 2028

Claims from this storm can typically be filed until around May 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 $13 on top of the $150 plan.

Cottonwood Falls hail history

13 recorded storm days in Cottonwood Falls, KS
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Sep 13, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Sep 13, 2026

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

Aug 6, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Jun 13, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Jun 13, 2026

1"
Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Jun 8, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Jun 8, 2026

1"
Signatures 1" Estimated 0.75"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on May 31, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

May 31, 2026

1.75"
Signatures 1.75" Estimated 1.25"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on May 30, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

May 30, 2026

1.75"
Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Apr 26, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Apr 26, 2026

3.5"
Signatures 3.5" Estimated 1.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Apr 23, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Apr 23, 2026

2"
Signatures 2" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Apr 17, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Apr 17, 2026

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

Apr 13, 2026

3"
Signatures 3" Estimated 1.5"
4 ground reports Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Apr 3, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Apr 3, 2026

1"
Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Cottonwood Falls, KS on Mar 10, 2026 Estimated-size surface
Storm date Cottonwood Falls / KS

Mar 10, 2026

0.5"
Estimated 0.5"
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 Sep 14, 2026.