Wind gust 58 mph
1 W Mccandless Townshi Allegheny County
“Mesonet station GW3644 Pittsburgh. (PBZ)”
— NOAA / SPC storm report
/ Storm field report · Allegheny
Hail in Allison Park · Sep 3, 2026
Hit 9 days ago
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Allison Park that day. Open it on the live map to see the swath over the streets.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Peak hail signal 0.75" ≈ penny to nickel · radar-estimated size aloft
Homes in the hail footprint 17,653
Ground reports 1 1 wind
Radar surfaces 1 Estimated size only
Convective day · Sep 3, 2026 · noon–noon UTC
Severity
The most severe storm Allison Park has seen in the last 12 months
Composite score · 3.5 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.5 /10
- Peak hail signal
- 19 /100
- Homes exposed
- 85 /100
- Ground truth
- 17 /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 Allison Park saw the hail — from two instruments
Sep 3, 2026 · Allison Park, PA
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-estimated hail size Surface resolved
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.
Max size
0.75"
Only the radar-estimated size surface resolved for Sep 3, 2026 — this storm produced no NEXRAD point detections over Allison Park, so there is one map to show, not two.
The storm in context
Where Sep 3, 2026 sits in Allison Park's hail record.
This was Allison Park's 4th recorded hail day, arriving 1 day after the Sep 2, 2026 storm. By severity it ranks 1st of the 4 storms we have logged here. Radar put the day's largest stone over Allison Park at 0.75" — radar-estimated size aloft.
The Sep 3, 2026 convective day was bigger than Allison Park: the same system put hail over 494 other tracked cities, 54 of them in Pennsylvania. Nearest: Mars (7 miles north, up to 0.5"); Sewickley (8 miles west, up to 0.5"); Pittsburgh (10 miles south, up to 1.5").
These maps are stills. In the app this date is one of 4 Allison Park 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
1 report filed with the NWS
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.
Wind reports
1 reportStorm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Mccandless Townshi — beyond Allison Park itself.
Near the severe threshold
What 0.75" hail means for Allison Park 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
Roofing exposure
What this storm is worth to a roofer.
17,653 homes × $12,000 avg. claim
Potential roof exposure
$212M
Potential roof exposure — 17,653 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 88 jobs
- Illustrative work
- ~$1.3M
Close just 0.5% of the 17,653 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
September 2028
Claims from this storm can typically be filed until around September 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $3,707 on top of the $150 plan.
Allison Park hail history
Other storms in Allison Park.
4 recorded storm days in Allison Park, PA
Estimated-size surface Storm date Allison Park / PA
Sep 2, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Allison Park / PA
Aug 22, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
NEXRAD surface Storm date Allison Park / PA
Mar 22, 2026
0.5" Signatures 0.5"
No ground reports filed Open report →
Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Sep 4, 2026.