Hail in Altoona Jul 10, 2026
Hit 24 days agoNEXRAD caught this storm: 1 hail signature up to 1". The radar-estimated size surface had no signal to model this day.
1"
≈ quarter · the largest NEXRAD radar signature28
0
none filedAltoona's only recorded storm in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 25 /100
- Homes exposed
- 29 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Altoona 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.
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.
Only the NEXRAD radar-signature surface resolved for Jul 10, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
Where Jul 10, 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 1st of the 1 storms we have logged here. Radar put the day's largest stone over Altoona at 1" — the largest NEXRAD radar signature.
The Jul 10, 2026 convective day was bigger than Altoona: the same system put hail over 682 other tracked cities, 19 of them in Pennsylvania. Nearest: Hastings (22 miles west, up to 1"); Northern Cambria (27 miles west, up to 1"); Dayton (56 miles west, up to 0.5").
These maps are stills from Altoona's Jul 10, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
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 Altoona 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.
What 1" hail means for Altoona roofs
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
$336K
Potential roof exposure — 28 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Altoona on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Altoona storm history — this Jul 10, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
1 recorded storm day in Altoona, PA