StormProof → hail seasons → Philadelphia → 2009
Philadelphia hail season 2009
16 NWS-recorded hail reports ≥1″ within 35 miles, across 6 storm days, max 1.75". Every one of those reports is a dated, located, citable official record — the context behind this market's 2009 claim volume.
Biggest storm days (2009, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| March 29, 2009 | 7 | 1.75" | ATLANTIC, DELAWARE, BURLINGTON, PHILADELPHIA |
| July 16, 2009 | 3 | 1.00" | PHILADELPHIA, MERCER, BUCKS |
| June 26, 2009 | 2 | 1.00" | MONTGOMERY |
| June 15, 2009 | 2 | 1.75" | MONTGOMERY, BUCKS |
| July 29, 2009 | 1 | 1.50" | MONTGOMERY |
“Severe thunderstorms dropped large hail across several municipalities in Delaware County. The largest reported hail was golf ball size in Media Borough. Quarter size hail was reported in Lansdowne Borough. In Clifton Heights Borough, penny size hail covered the ground. Dime to penny size hail were reported in both Boothwyn (Upper Chichester Township) and Concord Township. Dime size hail fell in Drexel Hill (Upper Dar”
— NWS event narrative, March 29, 2009 (NCEI Storm Events)
When it fell
Mar 7 · Jun 4 · Jul 5
Wind context: the record also holds 80 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2009 — relevant where the dispute is wind vs hail causation.
Working a Philadelphia claim from 2009?
These are aggregates. A claim file needs the per-address record: every recorded event within 1, 3 and 10 miles of the property, distances, official narratives, and citations an adjuster can check line by line. That's the report — generated in seconds, hosted on HailEvidence (the neutral evidence surface), formatted as an insurance-appeal attachment.
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Provenance
Final counts: NCEI Storm Events Database, file vintage c20260527, hail events with recorded magnitude ≥1.00″ and point coordinates within 35 miles of the Philadelphia anchor. NWS records are point and path observations. The absence of a nearby report does NOT prove that no hail fell at this address — it means no observation was logged nearby. A report of nearby hail documents the event; it does not by itself prove damage to a specific structure. Spotted an error? Email the address on our terms page and we correct against the source.