Hail in Altoona · May 23, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Altoona that day. Open it on the live map to see the swath over the streets.
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Convective day · May 23, 2026 · noon–noon UTC
Severity
The 7th most severe storm Altoona 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
- 19 /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 Altoona 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.
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.
Only the radar-estimated size surface resolved for May 23, 2026 — this storm produced no NEXRAD point detections over Altoona, so there is one map to show, not two.
The storm in context
Where May 23, 2026 sits in Altoona's hail record.
This was Altoona's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 7th of the 11 storms we have logged here. Radar put the day's largest stone over Altoona at 0.75" — radar-estimated size aloft.
The May 23, 2026 convective day was bigger than Altoona: the same system put hail over 222 other tracked cities, 18 of them in Florida. Nearest: Lady Lake (19 miles west, up to 0.5"); Howey In The Hills (24 miles southwest, up to 0.5"); Groveland (30 miles southwest, up to 0.5").
These maps are stills. In the app this date is one of 11 Altoona 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 Altoona, 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.
Near the severe threshold
What 0.75" hail means for Altoona roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Altoona hail history
Other storms in Altoona.
Estimated-size surface Sep 10, 2026
0.5"
Estimated-size surface Sep 5, 2026
0.5"
Estimated-size surface Aug 20, 2026
0.5"
Estimated-size surface Aug 19, 2026
0.5"
Estimated-size surface Jul 14, 2026
0.5"
NEXRAD surface Jul 12, 2026
0.75"
Estimated-size surface Jul 11, 2026
0.5"
Estimated-size surface Jul 8, 2026
0.75"
NEXRAD surface Jul 4, 2026
1"
Estimated-size surface Jun 24, 2026
0.75"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.