/ Storm field report · Harper

Hail in Harper · Jun 1, 2026

NEXRAD logged 0 hail signatures up to 1"; the estimated-size surface reached 0" aloft. Open it on the live map to see the swath over the streets.

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Peak hail signal 1" ≈ quarter · the largest NEXRAD radar signature
Homes in the hail footprint 0
Ground reports 0 none filed
Radar surfaces 2 NEXRAD + estimated size

Convective day · Jun 1, 2026 · noon–noon UTC

Severity

The 15th most severe storm Harper has seen in the last 12 months

Composite score · 1.5 / 10
Storm severity score

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

1.5 /10
Peak hail signal
25 /100

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

Homes exposed
0 /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 Harper saw the hail — from two instruments

Jun 1, 2026 · Harper, KS

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
NEXRAD radar-signature map of the hail storm over Harper, KS on Jun 1, 2026 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 1" Detections 0
Radar-estimated hail size Surface resolved
Radar-estimated hail-size map of the storm over Harper, KS on Jun 1, 2026 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 0"

The storm in context

Where Jun 1, 2026 sits in Harper's hail record.

This was Harper's 8th recorded hail day, arriving 2 days after the May 30, 2026 storm. By severity it ranks 15th of the 17 storms we have logged here. Radar put the day's largest stone over Harper at 1" — the largest NEXRAD radar signature.

The Jun 1, 2026 convective day was bigger than Harper: the same system put hail over 827 other tracked cities, 97 of them in Kansas. Nearest: Spivey (9 miles northwest, up to 1"); Anthony (9 miles southeast, up to 1"); Danville (11 miles east, up to 0").

These maps are stills. In the app this date is one of 17 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

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 Harper. 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.

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

Harper hail history

Other storms in Harper.

17 recorded storm days in Harper, KS
← All hail in Harper
Map unavailable
NEXRAD surface
Storm date Harper / KS

Sep 15, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Sep 12, 2026 Estimated-size surface
Storm date Harper / KS

Sep 12, 2026

2.5"
Estimated 2.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jul 11, 2026 Estimated-size surface
Storm date Harper / KS

Jul 11, 2026

1.25"
Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jun 26, 2026 Estimated-size surface
Storm date Harper / KS

Jun 26, 2026

1"
Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jun 25, 2026 Estimated-size surface
Storm date Harper / KS

Jun 25, 2026

0.5"
Estimated 0.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jun 21, 2026 Estimated-size surface
Storm date Harper / KS

Jun 21, 2026

2"
Estimated 2"
3 ground reports Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jun 20, 2026 Estimated-size surface
Storm date Harper / KS

Jun 20, 2026

0.75"
Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jun 18, 2026 Estimated-size surface
Storm date Harper / KS

Jun 18, 2026

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

Jun 13, 2026

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

May 30, 2026

2.5"
Signatures 2.5" Estimated 1.5"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on May 29, 2026 Estimated-size surface
Storm date Harper / KS

May 29, 2026

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

May 18, 2026

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

Apr 17, 2026

2.5"
Signatures 2.5" Estimated 1.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Mar 10, 2026 Estimated-size surface
Storm date Harper / KS

Mar 10, 2026

1.25"
Estimated 1.25"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Mar 3, 2026 Estimated-size surface
Storm date Harper / KS

Mar 3, 2026

1.75"
Signatures 1.75" Estimated 0.75"
No ground reports filed Open report →
Radar-estimated hail-size map of the storm over Harper, KS on Jan 10, 2026 Estimated-size surface
Storm date Harper / KS

Jan 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 16, 2026.