Pennsylvania Storm Data: Hail, Wind & Severe Weather
Deduplicated severe weather activity for Pennsylvania, fused from NWS warnings, storm reports, official records, and FEMA declarations.
Pennsylvania severe weather at a glance (last 12 months)
StormAuditor's consolidated public record currently shows 7,647 storm events impacting 67 of Pennsylvania's 67 counties in the trailing 12 months: 3,645 wind events, 2,320 hail events, 213 tornado events, 1,472 flood events. Events are fused from National Weather Service warnings and Special Weather Statements, observed Local Storm Reports, official NCEI storm records, and FEMA disaster declarations, then consolidated into a single event table under the published methodology. Because a single storm can carry more than one hazard tag (a squall line can produce both wind and flood records), the per-type counts can legitimately add up to more than the consolidated total. Sub-severe statements (radar-indicated gusts of 40+ mph or hail of 0.5"+) are included at a distinct moderate tier and never counted as severe.
Biggest Pennsylvania storm days
- September 2, 2026 — 450 recorded events (flood, hail, tornado, wind)
- September 3, 2026 — 430 recorded events (flood, hail, tornado, wind)
- July 4, 2026 — 378 recorded events (flood, hail, wind)
- June 14, 2026 — 345 recorded events (flood, hail, tornado, wind)
- July 18, 2026 — 302 recorded events (flood, hail, tornado, wind)
Most impacted counties
- Allegheny — 221 events (151 severe)
- Lancaster — 214 events (135 severe)
- Westmoreland — 205 events (149 severe)
- Centre — 194 events (148 severe)
- Washington — 193 events (149 severe)
- Clearfield — 188 events (148 severe)
- Bucks — 186 events (167 severe)
- Montgomery — 181 events (147 severe)
Additional activity recorded in NWS forecast zones: Burlington (8) · Westmoreland Ridges (4) · Fayette Ridges (2) · Higher Elevations Of Indiana (1).
Download the Pennsylvania dataset (free)
The full consolidated Pennsylvania event list for the trailing 12 months — dates, counties, hazard types, severities, measured gusts and hail sizes, with coordinates; source records deduplicated, and each NWS warning product listed per affected county — downloads free and stays current with the live record: download CSV · download JSON. Reusable with attribution under the data license; the JSON file carries a field dictionary and provenance notes.
Research a specific Pennsylvania address
Statewide counts tell you where activity concentrated; they do not tell you what happened at one property. For an individual address, run the Free Report Snapshot (an instant YES/NO against StormAuditor's screening thresholds — wind ≥ 45 mph, hail ≥ 0.75 in., deliberately below the official NWS severe criteria), use the Address Lookup, or purchase a full Weather Report for $2.99 covering every qualifying storm date at the address. Browse day-by-day activity on the Storm Calendar or compare states on the Storm Data hub.
All values are derived from public NOAA and NWS data under StormAuditor's published methodology. They are research estimates, not certified weather records — see Limitations. Data last refreshed September 6, 2026.
See where recent storms tracked on the statewide Pennsylvania hail map and wind map, or check the county impact heatmap.
Pennsylvania city storm pages: Philadelphia hail & wind history · Pittsburgh hail & wind history · Allentown hail & wind history · Reading hail & wind history · Erie hail & wind history · Bethlehem hail & wind history · Scranton hail & wind history · Lancaster hail & wind history
Neighboring states: Delaware storm data · Maryland storm data · New Jersey storm data · New York storm data · Ohio storm data · West Virginia storm data
About this page: built by Storm Auditor LLC from public NOAA/NWS records — deduplicated warnings, storm reports, station measurements, and official records on a rolling 12-month window, under the published methodology. See the StormAuditor Editorial Team for how content is produced.