Hail in Livermore · Jun 26, 2026
NEXRAD logged 1 hail signature up to 0.5"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.
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Convective day · Jun 26, 2026 · noon–noon UTC
Severity
The 6th most severe storm Livermore 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 Livermore 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.
Only the NEXRAD radar-signature surface resolved for Jun 26, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
The storm in context
Where Jun 26, 2026 sits in Livermore's hail record.
This was Livermore's 2nd recorded hail day, arriving 27 days after the May 30, 2026 storm. By severity it ranks 6th of the 7 storms we have logged here. Radar put the day's largest stone over Livermore at 0.5" — the largest NEXRAD radar signature.
The Jun 26, 2026 convective day was bigger than Livermore: the same system put hail over 440 other tracked cities, 51 of them in Colorado. Nearest: Eaton (46 miles southeast, up to 1.5"); Gill (50 miles southeast, up to 1.5"); Greeley (50 miles southeast, up to 0.75").
These maps are stills. In the app this date is one of 7 Livermore 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 Livermore 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 Livermore 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
Livermore hail history
Other storms in Livermore.
Estimated-size surface Aug 26, 2026
0.75"
NEXRAD surface Jul 22, 2026
0.75"
Estimated-size surface Jul 21, 2026
1"Jul 10, 2026
0.5"
NEXRAD surface Jul 3, 2026
0.5"
NEXRAD surface May 30, 2026
0.5"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.