/ Storm field report · Polk

Hail in Gresham · Aug 17, 2026

Hit 26 days ago

The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Gresham that day. Open it on the live map to see the swath over the streets.

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Peak hail signal 0.75" ≈ penny to nickel · radar-estimated size aloft
Homes in the hail footprint 1,834
Ground reports 1 1 wind
Radar surfaces 1 Estimated size only

Convective day · Aug 17, 2026 · noon–noon UTC

Severity

The 4th most severe storm Gresham has seen in the last 12 months

Composite score · 3.0 / 10
Storm severity score

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

3.0 /10
Peak hail signal
19 /100

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

Homes exposed
65 /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 Gresham saw the hail — from two instruments

Aug 17, 2026 · Gresham, NE

Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.

Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Gresham, NE on Aug 17, 2026 Estimated size field

Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.

Max size 0.75"

Only the radar-estimated size surface resolved for Aug 17, 2026 — this storm produced no NEXRAD point detections over Gresham, so there is one map to show, not two.

The storm in context

Where Aug 17, 2026 sits in Gresham's hail record.

This was Gresham's 11th recorded hail day, arriving 6 days after the Aug 11, 2026 storm. By severity it ranks 4th of the 12 storms we have logged here. Radar put the day's largest stone over Gresham at 0.75" — radar-estimated size aloft.

The Aug 17, 2026 convective day was bigger than Gresham: the same system put hail over 428 other tracked cities, 103 of them in Nebraska. Nearest: Shelby (3 miles north, up to 0.75"); Surprise (6 miles northeast, up to 0.75"); Waco (6 miles southwest, up to 0.5").

These maps are stills. In the app this date is one of 12 Gresham 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 68 mph
3 E Benedict York County

“(GID)”

— 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 Benedict — beyond Gresham itself.

Near the severe threshold

What 0.75" hail means for Gresham roofs.

A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.

Radar reading · not confirmed damage

Roofing exposure

What this storm is worth to a roofer.

1,834 homes × $12,000 avg. claim

Potential roof exposure

$22M

Potential roof exposure — 1,834 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.

Illustrative jobs
9 jobs
Illustrative work
~$135K

Close just 0.5% of the 1,834 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

August 2028

Claims from this storm can typically be filed until around August 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 $385 on top of the $150 plan.

Gresham hail history

Other storms in Gresham.

12 recorded storm days in Gresham, NE
← All hail in Gresham
Radar-estimated hail-size map of the storm over Gresham, NE on Aug 19, 2026 Estimated-size surface
Storm date Gresham / NE

Aug 19, 2026

1"
Estimated 1"
1 ground report Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on Aug 11, 2026 Estimated-size surface
Storm date Gresham / NE

Aug 11, 2026

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

Jul 8, 2026

1"
Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on Jul 3, 2026 Estimated-size surface
Storm date Gresham / NE

Jul 3, 2026

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

Jul 1, 2026

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

Jun 13, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on Jun 5, 2026 Estimated-size surface
Storm date Gresham / NE

Jun 5, 2026

1.75"
Signatures 1.75" Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on May 30, 2026 Estimated-size surface
Storm date Gresham / NE

May 30, 2026

1"
Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on May 18, 2026 Estimated-size surface
Storm date Gresham / NE

May 18, 2026

1.25"
Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on Apr 25, 2026 Estimated-size surface
Storm date Gresham / NE

Apr 25, 2026

1.75"
Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Gresham, NE on Apr 15, 2026 Estimated-size surface
Storm date Gresham / NE

Apr 15, 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 Aug 20, 2026.