Hail in San Carlos · Jul 21, 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 · Jul 21, 2026 · noon–noon UTC
Severity
The 5th most severe storm San Carlos 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 San Carlos saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar signature field The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
The storm in context
Where Jul 21, 2026 sits in San Carlos's hail record.
This was San Carlos's 3rd recorded hail day, arriving 10 days after the Jul 11, 2026 storm. By severity it ranks 5th of the 5 storms we have logged here. Radar put the day's largest stone over San Carlos at 0.5" — radar-estimated size aloft.
The Jul 21, 2026 convective day was bigger than San Carlos: the same system put hail over 703 other tracked cities, 22 of them in Arizona. Nearest: Globe (7 miles southwest, up to 1"); Miami (12 miles west, up to 1.25"); Roosevelt (22 miles northwest, up to 1.25").
These maps are stills. In the app this date is one of 5 San Carlos 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 San Carlos. 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 0.5" hail means for San Carlos 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
San Carlos hail history
Other storms in San Carlos.
Estimated-size surface Aug 20, 2026
1"
Estimated-size surface Jul 23, 2026
1.75"
Estimated-size surface Jul 11, 2026
1.25"
NEXRAD surface Jul 8, 2026
1"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.