Hail in Harper · Sep 19, 2026
The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Harper that day. Open it on the live map to see the swath over the streets.
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Convective day · Sep 19, 2026 · noon–noon UTC
Severity
The 10th 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
- 25 /100
- Homes exposed
- 43 /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
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.
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.
Only the radar-estimated size surface resolved for Sep 19, 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 19, 2026 sits in Harper's hail record.
This was Harper's 18th recorded hail day, arriving 4 days after the Sep 15, 2026 storm. By severity it ranks 10th of the 18 storms we have logged here. Radar put the day's largest stone over Harper at 1" — radar-estimated size aloft.
The Sep 19, 2026 convective day was bigger than Harper: the same system put hail over 336 other tracked cities, 90 of them in Kansas. Nearest: Argonia (22 miles southeast, up to 0.5"); Isabel (22 miles northwest, up to 0.5"); Bluff City (25 miles southeast, up to 0.75").
These maps are stills. In the app this date is one of 18 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.
Nobody on the ground filed a report over Harper for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Damage-capable hail signal
What 1" hail means for Harper roofs.
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$1.7M
Potential roof exposure — 140 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 140 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 $29 on top of the $150 plan.
Harper hail history
Other storms in Harper.
NEXRAD surface Sep 15, 2026
0.5"
Estimated-size surface Sep 12, 2026
2.5"
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"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.