Hail in Round O · Aug 15, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0.5" aloft. Open it on the live map to see the swath over the streets.
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Convective day · Aug 15, 2026 · noon–noon UTC
Severity
The 6th most severe storm Round O 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
- 13 /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 Round O 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 Aug 15, 2026 sits in Round O's hail record.
This was Round O's 6th recorded hail day, arriving 9 days after the Aug 6, 2026 storm. By severity it ranks 6th of the 7 storms we have logged here. Radar put the day's largest stone over Round O at 0.5" — radar-estimated size aloft.
The Aug 15, 2026 convective day was bigger than Round O: the same system put hail over 188 other tracked cities, 12 of them in South Carolina. Nearest: Summerville (31 miles northeast, up to 0.5"); Moncks Corner (38 miles northeast, up to 0.5"); Cordesville (49 miles northeast, up to 0.75").
These maps are stills. In the app this date is one of 7 Round O 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.
For this storm over Round O, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
Below the severe threshold
What 0.5" hail means for Round O 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
Round O hail history
Other storms in Round O.
Aug 27, 2026
0.5"
Estimated-size surface Aug 6, 2026
0.5"
Estimated-size surface Jul 24, 2026
0.75"
Estimated-size surface Jul 16, 2026
0.75"
Estimated-size surface Jul 12, 2026
1"
Estimated-size surface Mar 8, 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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