Hail in Philadelphia · Jul 31, 2026
NEXRAD logged 7 hail signatures up to 0.75"; 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 · Jul 31, 2026 · noon–noon UTC
Severity
The 10th most severe storm Philadelphia 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
- 50 /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 Philadelphia saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Only the NEXRAD radar-signature surface resolved for Jul 31, 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 Jul 31, 2026 sits in Philadelphia's hail record.
This was Philadelphia's 11th recorded hail day, arriving 11 days after the Jul 20, 2026 storm. By severity it ranks 10th of the 16 storms we have logged here. Radar put the day's largest stone over Philadelphia at 0.75" — the largest NEXRAD radar signature.
The Jul 31, 2026 convective day was bigger than Philadelphia: the same system put hail over 238 other tracked cities, 23 of them in Mississippi. Nearest: Meridian (28 miles south, up to 1"); Chunky (28 miles south, up to 1"); Porterville (30 miles southeast, up to 0.5").
These maps are stills. In the app this date is one of 16 Philadelphia 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.
The National Weather Service logged no spotter reports for this storm over Philadelphia. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Near the severe threshold
What 0.75" hail means for Philadelphia 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.
Potential roof exposure
$3.9M
Potential roof exposure — 322 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 2 jobs
- Illustrative work
- ~$30K
Close just 0.5% of the 322 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
July 2028
Claims from this storm can typically be filed until around July 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 $68 on top of the $150 plan.
Philadelphia hail history
Other storms in Philadelphia.
Sep 12, 2026
0.5"
Estimated-size surface Sep 7, 2026
0.5"
Estimated-size surface Sep 6, 2026
0.5"
Estimated-size surface Aug 20, 2026
1"
Estimated-size surface Aug 19, 2026
0.5"
Estimated-size surface Jul 20, 2026
0.5"
Estimated-size surface Jul 4, 2026
1"
Estimated-size surface Jul 1, 2026
1.25"
Estimated-size surface Jun 19, 2026
0.5"
Estimated-size surface Jun 1, 2026
1.25"
Estimated-size surface May 6, 2026
4"
Estimated-size surface Apr 29, 2026
1.5"
Estimated-size surface Apr 28, 2026
1.25"
Estimated-size surface Apr 24, 2026
1"
Estimated-size surface Mar 7, 2026
1.5"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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