Tornado History
Mercer Tornado History
This county-level tornado history page focuses on Mercer, Pennsylvania. The records below identify 25 tornadoes from 1954 through 2024, including a highest listed rating of F5 (Incredible damage). NOAA damage estimates in this group total at least $30.7M, with 9 deaths and 93 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Mercer, Pennsylvania
Top local patterns from the historical tornado records in this group.
Average 0.4 tornadoes per year (0.4/yr in last decade)
May is the peak tornado month with 7 recorded events
Deadliest tornado: F5 in Mercer, Pennsylvania with 8 deaths
1985 was the most active year with 3 tornadoes
The 1980s had the most tornado activity (5 events)
Longest tornado: 12 miles in Mercer, Pennsylvania
Widest tornado: 500.0 yards in Mercer, Pennsylvania
Most tornadoes in one day: 3 on May 31, 1985
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Mercer, Pennsylvania, May is the most active month with 7 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1985 was the most active year with 3 recorded tornadoes.
Property Damage Trends
Visualizes reported property damage over time. Bars use a log-like scale so very large damage years do not flatten the rest of the chart.
Summary: The highest reported property damage year in this group is 1985 with at least $25.5M in NOAA-listed property damage.
Historical Track Sketch
This map covers the wider location—not your exact property.Measure the closest recorded track to a street address in or near Mercer, Pennsylvania.
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Notable Tornado Records
The table highlights the strongest and most damaging records in this page's local dataset. Damage totals are NOAA-reported minimum estimates where available.
| Date | Rating | Area | Length | Width | Deaths | Injuries | Min. property damage |
|---|---|---|---|---|---|---|---|
| May 31, 1985 | F5 | Mercer, Pennsylvania | 12 mi | 450 yd | 8 | 60 | $250K |
| May 31, 1985 | F5 | Mercer, Pennsylvania | 2 mi | 450 yd | 0 | 0 | $250K |
| May 31, 1985 | F4 | Mercer, Pennsylvania | 7 mi | 350 yd | 0 | 5 | $25.0M |
| May 2, 1972 | F3 | Mercer, Pennsylvania | 0 mi | 33 yd | 0 | 0 | $25K |
| October 3, 1986 | F2 | Mercer, Pennsylvania | 9 mi | 123 yd | 0 | 0 | $2.5M |
| November 10, 2002 | F2 | Mercer, Pennsylvania | 7 mi | 500 yd | 1 | 19 | $1.0M |
| June 15, 1964 | F2 | Mercer, Pennsylvania | 0 mi | 400 yd | 0 | 4 | $250K |
| September 30, 1954 | F2 | Mercer, Pennsylvania | 0 mi | 33 yd | 0 | 0 | $25K |
| June 1, 1954 | F2 | Mercer, Pennsylvania | 0 mi | 3 yd | 0 | 3 | $2K |
| April 28, 2002 | F1 | Mercer, Pennsylvania | 10 mi | 200 yd | 0 | 0 | $750K |
| July 8, 2014 | EF1 | Mercer, Pennsylvania | 2.46 mi | 150 yd | 0 | 0 | $75K |
| August 2, 1980 | F1 | Mercer, Pennsylvania | 2 mi | 33 yd | 0 | 1 | $25K |
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Related Location Pages
- Mercer tornado history4
- Sharon tornado history2
- New Lebanon tornado history2
- Sharpsville tornado history1
- Stoneboro tornado history1
- Shenango tornado history1
- Kremis tornado history1
- Greenfield tornado history1
- Wheatland tornado history1
- Sharon Arpt tornado history1
- Farrell tornado history1
- Coulson tornado history1
Source And Limits
Data sourced from NOAA Storm Prediction Center and the NCEI Storm Events Database. TornadoTrace summarizes reported weather events for screening and research; it is not a damage assessment, inspection, or insurance determination. Coordinates and records can be approximate, incomplete, revised, or missing. No warranty of completeness or accuracy.