Hail in Alpine · Sep 12, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Alpine that day. Open it on the live map to see the swath over the streets.
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Convective day · Sep 12, 2026 · noon–noon UTC
Severity
The 13th most severe storm Alpine 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 Alpine 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.
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Only the radar-estimated size surface resolved for Sep 12, 2026 — this storm produced no NEXRAD point detections over Alpine, so there is one map to show, not two.
The storm in context
Where Sep 12, 2026 sits in Alpine's hail record.
This was Alpine's 14th recorded hail day, arriving 29 days after the Aug 14, 2026 storm. By severity it ranks 13th of the 14 storms we have logged here. Radar put the day's largest stone over Alpine at 0.5" — radar-estimated size aloft.
The Sep 12, 2026 convective day was bigger than Alpine: the same system put hail over 354 other tracked cities, 4 of them in Texas. Nearest: San Simon (344 miles west, up to 0.5"); Claude (359 miles north, up to 0.75"); Hedley (366 miles northeast, up to 0.5").
These maps are stills. In the app this date is one of 14 Alpine 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 Alpine 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 Alpine 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
Alpine hail history
Other storms in Alpine.
Estimated-size surface Aug 14, 2026
1"
Estimated-size surface Aug 13, 2026
0.5"
Estimated-size surface Jul 19, 2026
0.5"
Estimated-size surface Jul 18, 2026
0.5"
Estimated-size surface Jun 12, 2026
1.25"
Estimated-size surface Jun 11, 2026
0.75"
Estimated-size surface Jun 2, 2026
1.5"
Estimated-size surface Jun 1, 2026
1.75"
Estimated-size surface May 31, 2026
1.75"
Estimated-size surface May 26, 2026
0.75"
Estimated-size surface May 23, 2026
1"
Estimated-size surface May 20, 2026
1.5"
Estimated-size surface Mar 30, 2026
0.75"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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