Hail in Fort Defiance · Aug 20, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Fort Defiance that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 20, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Fort Defiance 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 Fort Defiance saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for Aug 20, 2026 — this storm produced no NEXRAD point detections over Fort Defiance, so there is one map to show, not two.
The storm in context
Where Aug 20, 2026 sits in Fort Defiance's hail record.
This was Fort Defiance's 3rd recorded hail day, arriving 23 days after the Jul 28, 2026 storm. By severity it ranks 3rd of the 3 storms we have logged here. Radar put the day's largest stone over Fort Defiance at 0.5" — radar-estimated size aloft.
The Aug 20, 2026 convective day was bigger than Fort Defiance: the same system put hail over 640 other tracked cities, 12 of them in Arizona. Nearest: Indian Wells (66 miles southwest, up to 0.5"); Winslow (90 miles southwest, up to 1"); Mancos (111 miles north, up to 0.5").
These maps are stills. In the app this date is one of 3 Fort Defiance 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 Fort Defiance, 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 Fort Defiance 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
Fort Defiance hail history
Other storms in Fort Defiance.
Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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