Upper Saint Clair, PA Tornado History — 59 Tornadoes Since 1950
How many tornadoes has Upper Saint Clair, PA had?
Upper Saint Clair has had 59 tornadoes on record within 25 miles since 1950, including 1 strong to violent (EF3+) tornado.
When was the most recent tornado near Upper Saint Clair?
The most recent tornado within 25 miles of Upper Saint Clair was an EF0 on May 21, 2025.
When is tornado season in Upper Saint Clair?
June is historically the peak month for tornadoes near Upper Saint Clair, with 20 on record. April through June account for 35 of the 59 tornadoes on record near Upper Saint Clair.
At a Glance
Recent Tornado Activity Near Upper Saint Clair
The last 20 years of confirmed tornadoes within 25 miles — 31 total, averaging 1.6 per year over this window.
Preliminary tornado reports near Upper Saint Clair since December 29, 2025
These are 3 preliminary reports, not confirmed tornadoes. They have not yet been through an NWS damage survey, and are not counted in the confirmed totals above.
Preliminary reports are revised, merged, and sometimes withdrawn — historically about 23% are consolidated downward once surveys complete. Ratings are omitted until a survey assigns one.
Confirmed records above are complete through December 29, 2025. NOAA publishes the confirmed archive annually, so tornadoes after that date appear here first and move into the totals above once finalized.
A brief... narrow EF0 tornado caused damage mainly to trees along Upper Service Road in Greene and Raccoon Townships. Max wind was estimated at 75 mph... and path width (PBZ)
NWS storm survey confirms a brief tornado near the end of Conti Road. Rating and other details to be determined. (PBZ)
Tornado confirmed by storm survey team. Tornado touched down briefly in Linn. Maximum damage estimated at 100mph (EF1). (PBZ)
Within 25 miles of Upper Saint Clair. Quoted text is the report narrative exactly as filed. Source: NOAA Storm Prediction Center preliminary storm reports, updated daily.
What storm spotters reported near Upper Saint Clair
2 local storm reports have been filed within 25 miles of Upper Saint Clair and since confirmed into the NOAA archive, the earliest on May 21, 2025 and the most recent on May 21, 2025. They are already counted in the Upper Saint Clair totals above; quoted below is the narrative each reporting office filed at the time.
Tornado confirmed with damage noted near the Gastonville area. (PBZ)
Based on damage reports provided to NWS... a brief EF0 tornado (max wind 65 mph) began near Oakleaf Rd... crossed Willow Rd and likely weakened toward Lynn Portal Rd. D (PBZ)
Source: National Weather Service and trained-spotter local storm reports, relayed by the NOAA Storm Prediction Center.
Tornadoes by Decade
Tornadoes by Enhanced Fujita Rating
F0–F5 ratings (pre-2007) are grouped with their EF equivalents. The Enhanced Fujita scale replaced the original Fujita scale in February 2007.
Tornadoes by Month
Casualties on Record Near Upper Saint Clair
2 fatalities have been recorded within 25 miles of Upper Saint Clair since 1950, across 1 event. 144 injuries have been reported across all events. 1963 was the deadliest year on record near Upper Saint Clair.
The deadliest single event was an F3 on August 3, 1963, which caused 2 fatalities along a 0.1-mile track.
Notable Tornadoes Near Upper Saint Clair
What the record shows near Upper Saint Clair
The 2020s are the busiest decade on record so far near Upper Saint Clair, with 22 of the 59 confirmed tornadoes within 25 miles. The Upper Saint Clair record runs from the 1950s to today.
Of the tornadoes rated near Upper Saint Clair, 47 reached EF0 or EF1 and 11 reached EF2 or stronger. The most intense on record near Upper Saint Clair is rated EF3, of which 1 is logged. A further 1 near Upper Saint Clair is unrated — events NOAA logged before a damage survey assigned a scale.
Across the last 20 years Upper Saint Clair has averaged 1.6 confirmed tornadoes a year within 25 miles, 31 in total. 2024 was the busiest of them with 13, and 9 of those years passed with none at all.