Hail in Grace · Aug 22, 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 22, 2026 · noon–noon UTC
Severity
The 6th most severe storm Grace 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 Grace 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 22, 2026 sits in Grace's hail record.
This was Grace's 4th recorded hail day, arriving 23 days after the Jul 30, 2026 storm. By severity it ranks 6th of the 7 storms we have logged here. Radar put the day's largest stone over Grace at 0.5" — radar-estimated size aloft.
The Aug 22, 2026 convective day was bigger than Grace: the same system put hail over 501 other tracked cities, 4 of them in Idaho. Nearest: Soda Springs (18 miles east, up to 0.5"); American Falls (47 miles west, up to 0.75"); Afton (49 miles east, up to 0.5").
These maps are stills. In the app this date is one of 7 Grace 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 Grace 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.
Below the severe threshold
What 0.5" hail means for Grace 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
Aug 28, 2026
0.5"
Estimated-size surface Aug 24, 2026
0.5"
Estimated-size surface Aug 23, 2026
0.5"
Estimated-size surface Jul 30, 2026
1.5"
Estimated-size surface Jul 16, 2026
0.5"
Estimated-size surface Jul 3, 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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