Hail in Hennessey · May 9, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0" aloft. Open it on the live map to see the swath over the streets.
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Convective day · May 9, 2026 · noon–noon UTC
Severity
The 16th most severe storm Hennessey 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
- 0 /100
- Homes exposed
- 0 /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 Hennessey 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.
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.
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.
The storm in context
Where May 9, 2026 sits in Hennessey's hail record.
This was Hennessey's 7th recorded hail day, arriving 16 days after the Apr 23, 2026 storm. By severity it ranks 16th of the 17 storms we have logged here. Radar put the day's largest stone over Hennessey at 0" — radar-estimated size aloft.
The May 9, 2026 convective day was bigger than Hennessey: the same system put hail over 268 other tracked cities, 106 of them in Oklahoma. Nearest: Dover (16 miles southeast, up to 0"); Kingfisher (19 miles southeast, up to 0"); Marshall (29 miles east, up to 0.5").
These maps are stills. In the app this date is one of 17 Hennessey 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 Hennessey. 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.
Below the severe threshold
What 0" hail means for Hennessey roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Hennessey hail history
Other storms in Hennessey.
Estimated-size surface Aug 7, 2026
0.5"
Estimated-size surface Jul 11, 2026
1.75"
Estimated-size surface Jun 26, 2026
2.5"
Estimated-size surface Jun 21, 2026
0.75"
Estimated-size surface Jun 12, 2026
0.5"
Estimated-size surface Jun 1, 2026
1"
NEXRAD surface May 31, 2026
0.75"
Estimated-size surface May 29, 2026
1.75"
Estimated-size surface May 26, 2026
0.75"
Estimated-size surface May 22, 2026
0.5"
Estimated-size surface Apr 23, 2026
1.75"
Estimated-size surface Apr 17, 2026
4"
Estimated-size surface Apr 3, 2026
1.5"
Estimated-size surface Apr 1, 2026
2"
Estimated-size surface Mar 10, 2026
0.75"
NEXRAD surface Jan 7, 2026
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