Hail size 1"
24 NNE Harrison Sioux County
“Spotter reported accumulating hail mostly between nickel and quarter sized that covered the ground completely. (CYS)”
— NOAA / SPC storm report
/ Storm field report · Sioux
Hail in Harrison · Aug 17, 2026
Hit 26 days ago
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 2.25" 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 · radar-estimated size aloft
Homes in the hail footprint 270
Ground reports 3 1 hail · 2 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · Aug 17, 2026 · noon–noon UTC
Severity
The most severe storm Harrison has seen in the last 12 months
Composite score · 5.3 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
5.3 /10
- Peak hail signal
- 56 /100
- Homes exposed
- 49 /100
- Ground truth
- 50 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Harrison saw the hail — from two instruments
Aug 17, 2026 · Harrison, NE
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
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
0"
Detections
0
Radar-estimated hail size Surface resolved
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
2.25"
The storm in context
Where Aug 17, 2026 sits in Harrison's hail record.
This was Harrison's 9th recorded hail day, arriving 1 day after the Aug 16, 2026 storm. By severity it ranks 1st of the 12 storms we have logged here. Radar put the day's largest stone over Harrison at 2.25" — radar-estimated size aloft.
The Aug 17, 2026 convective day was bigger than Harrison: the same system put hail over 428 other tracked cities, 103 of them in Nebraska. Nearest: Torrington (21 miles southwest, up to 0.5"); Morrill (31 miles south, up to 0.5"); Whitney (33 miles northeast, up to 1.75").
These maps are stills. In the app this date is one of 12 Harrison 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
3 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.
Hail reports
1 reportWind reports
2 reports Wind gust 75 mph
7 W Ardmore Fall River County
“(UNR)”
— NOAA / SPC storm report
Wind gust 97 mph
7 W Ardmore Fall River County
“(UNR)”
— 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.
Hail was reported over 13 minutes, from to .
Reports came from Ardmore — beyond Harrison itself.
Severe hail signal
What 2.25" hail means for Harrison 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.
270 homes × $12,000 avg. claim
Potential roof exposure
$3.2M
Potential roof exposure — 270 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 270 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 $57 on top of the $150 plan.
Harrison hail history
Other storms in Harrison.
12 recorded storm days in Harrison, NE
Estimated-size surface Storm date Harrison / NE
Sep 6, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Aug 25, 2026
2" Estimated 2"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Aug 23, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Aug 16, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Jul 28, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Jun 28, 2026
1.75" Signatures 1.75" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Jun 26, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Jun 22, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Jun 6, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
Jun 4, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Harrison / NE
May 30, 2026
2" Signatures 2" Estimated 1.25"
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 7, 2026.