StormProof → hail seasons → Washington, DC → 2011
Washington, DC hail season 2011
54 NWS-recorded hail reports ≥1″ within 35 miles, across 12 storm days, max 1.75". Every one of those reports is a dated, located, citable official record — the context behind this market's 2011 claim volume.
Biggest storm days (2011, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| August 18, 2011 | 27 | 1.75" | PRINCE WILLIAM, FAIRFAX, FAIRFAX (C), LOUDOUN |
| June 1, 2011 | 5 | 1.75" | PRINCE GEORGE'S, ARLINGTON |
| April 24, 2011 | 5 | 1.25" | ARLINGTON, DISTRICT OF COLUMBIA, ANNE ARUNDEL, MONTGOMERY |
| August 19, 2011 | 4 | 1.00" | PRINCE GEORGE'S, ANNE ARUNDEL |
| April 27, 2011 | 3 | 1.50" | PRINCE WILLIAM |
“Quarter sized hail was reported at the intersection of Connecticut Avenue and Viers Mill Road.”
— NWS event narrative, August 18, 2011 (NCEI Storm Events)
When it fell
Apr 9 · May 3 · Jun 6 · Aug 34 · Sep 2
Wind context: the record also holds 227 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2011 — relevant where the dispute is wind vs hail causation.
Working a Washington, DC claim from 2011?
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 Washington, DC 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.