StormProof → hail seasons → Boston → 2021
Boston hail season 2021
5 NWS-recorded hail reports ≥1″ within 30 miles, across 2 storm days, max 1.25". Every one of those reports is a dated, located, citable official record — the context behind this market's 2021 claim volume.
Biggest storm days (2021, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| July 23, 2021 | 3 | 1.25" | PLYMOUTH, ESSEX |
| July 7, 2021 | 2 | 1.00" | NORFOLK, ESSEX |
“In Kingston, amateur radio reported half dollar size hail at 740 PM EDT (640 PM EST). Quarter size hail was reported via social media photos at 750 PM EDT (650 PM EST). Dime sized hail had been reported twenty minutes earlier.”
— NWS event narrative, July 23, 2021 (NCEI Storm Events)
When it fell
Jul 5
Wind context: the record also holds 82 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2021 — relevant where the dispute is wind vs hail causation.
Working a Boston claim from 2021?
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.
Unlimited reports — Pro $99/mo Single report $29
Provenance
Final counts: NCEI Storm Events Database, file vintage c20260527, hail events with recorded magnitude ≥1.00″ and point coordinates within 30 miles of the Boston 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.