Allison Park, PA Tornado History — 73 Tornadoes Since 1950
How many tornadoes has Allison Park, PA had?
Allison Park has had 73 tornadoes on record within 25 miles since 1950, including 3 strong to violent (EF3+) tornadoes.
When was the most recent tornado near Allison Park?
The most recent tornado within 25 miles of Allison Park was an EF1 on May 21, 2025.
When is tornado season in Allison Park?
June is historically the peak month for tornadoes near Allison Park, with 23 on record. April through June account for 43 of the 73 tornadoes on record near Allison Park.
At a Glance
Recent Tornado Activity Near Allison Park
The last 20 years of confirmed tornadoes within 25 miles — 33 total, averaging 1.6 per year over this window.
Preliminary tornado reports near Allison Park 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Preliminary reports are revised, merged, and sometimes withdrawn — historically about 23% are consolidated downward once surveys complete.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.
Corrects previous tornado report from 1 SSE Orchard Hills. NWS Storm Survey confirms an EF-0 tornado with maximum wind of 85 mph in Orchard Hills. (PBZ)
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)
Trees down... out buildings damaged... roof damage. Strong radar circulation went right over this location on Yellow Creek Road just south of Kotchey Lane. (PBZ)
Within 25 miles of Allison Park. Quoted text is the report narrative exactly as filed. Source: NOAA Storm Prediction Center preliminary storm reports, updated daily.
What storm spotters reported near Allison Park
One local storm report has been filed within 25 miles of Allison Park and since confirmed into the NOAA archive, the earliest on May 21, 2025 and the most recent on May 21, 2025. It is already counted in the Allison Park totals above; quoted below is the narrative the reporting office filed at the time.
Tornado confirmed with damage noted near the Gastonville area. (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 Allison Park
11 fatalities have been recorded within 25 miles of Allison Park since 1950, across 2 events. 404 injuries have been reported across all events. 1985 was the deadliest year on record near Allison Park.
The deadliest single event was an F3 on May 31, 1985, which caused 9 fatalities along a 39.0-mile track.
Notable Tornadoes Near Allison Park
What the record shows near Allison Park
The 2020s are the busiest decade on record so far near Allison Park, with 25 of the 73 confirmed tornadoes within 25 miles. The Allison Park record runs from the 1950s to today.
Of the tornadoes rated near Allison Park, 58 reached EF0 or EF1 and 14 reached EF2 or stronger. The most intense on record near Allison Park is rated EF4, of which 1 is logged. A further 1 near Allison Park is unrated — events NOAA logged before a damage survey assigned a scale.
Across the last 20 years Allison Park has averaged 1.6 confirmed tornadoes a year within 25 miles, 33 in total. 2024 was the busiest of them with 12, and 9 of those years passed with none at all.