StormProof → hail seasons → San Antonio → 2017
San Antonio hail season 2017
11 NWS-recorded hail reports ≥1″ within 35 miles, across 5 storm days, max 1.75". Every one of those reports is a dated, located, citable official record — the context behind this market's 2017 claim volume.
Biggest storm days (2017, final record)
| Date | ≥1″ reports | Max hail | Areas named in the record |
|---|---|---|---|
| May 23, 2017 | 4 | 1.75" | ATASCOSA, WILSON, BEXAR |
| April 11, 2017 | 3 | 1.25" | COMAL, KENDALL |
| May 28, 2017 | 2 | 1.25" | COMAL, BLANCO |
| May 31, 2017 | 1 | 1.00" | ATASCOSA |
| February 19, 2017 | 1 | 1.00" | BEXAR |
“A thunderstorm produced golf ball size hail along Hwy 181 northwest of Floresville.”
— NWS event narrative, May 23, 2017 (NCEI Storm Events)
When it fell
Feb 1 · Apr 3 · May 7
Wind context: the record also holds 24 thunderstorm-wind events ≥50 kt (≈58 mph, the NWS severe criterion) in this radius for 2017 — relevant where the dispute is wind vs hail causation.
Working a San Antonio claim from 2017?
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 San Antonio 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.