Hail in Harper · Sep 12, 2026
The estimated-size surface reached 2.5" aloft; NEXRAD logged no point detections over Harper that day. At 2.5" — baseball — 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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Convective day · Sep 12, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Harper has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 63 /100
- Homes exposed
- 54 /100
- Ground truth
- 0 /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 Harper saw the hail — from two instruments
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Only the radar-estimated size surface resolved for Sep 12, 2026 — this storm produced no NEXRAD point detections over Harper, so there is one map to show, not two.
The storm in context
Where Sep 12, 2026 sits in Harper's hail record.
This was Harper's 16th recorded hail day, arriving 63 days after the Jul 11, 2026 storm. By severity it ranks 3rd of the 16 storms we have logged here. Radar put the day's largest stone over Harper at 2.5" — radar-estimated size aloft.
The Sep 12, 2026 convective day was bigger than Harper: the same system put hail over 354 other tracked cities, 113 of them in Kansas. Nearest: Danville (9 miles northeast, up to 0.75"); Norwich (13 miles northeast, up to 0.75"); Argonia (14 miles east, up to 0.5").
These maps are stills. In the app this date is one of 16 Harper 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
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.
The National Weather Service logged no spotter reports for this storm over Harper. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Severe hail signal
What 2.5" hail means for Harper 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.
Potential roof exposure
$6.2M
Potential roof exposure — 515 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 3 jobs
- Illustrative work
- ~$45K
Close just 0.5% of the 515 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
September 2028
Claims from this storm can typically be filed until around September 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 $108 on top of the $150 plan.
Harper hail history
Other storms in Harper.
Estimated-size surface Jul 11, 2026
1.25"
Estimated-size surface Jun 26, 2026
1"
Estimated-size surface Jun 25, 2026
0.5"
Estimated-size surface Jun 21, 2026
2"
Estimated-size surface Jun 20, 2026
0.75"
Estimated-size surface Jun 18, 2026
1.25"
Estimated-size surface Jun 13, 2026
1.25"
Estimated-size surface Jun 1, 2026
1"
Estimated-size surface May 30, 2026
2.5"
Estimated-size surface May 29, 2026
1"
Estimated-size surface May 18, 2026
2"
Estimated-size surface Apr 17, 2026
2.5"
Estimated-size surface Mar 10, 2026
1.25"
Estimated-size surface Mar 3, 2026
1.75"
Estimated-size surface Jan 10, 2026
0.5"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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