Tornado History
O Fallon Tornado History
This location page summarizes tornado records that list O Fallon, Illinois as a begin or end location. The dataset includes 1 matching records from 2025 through 2025. The strongest matching rating is EF1 (Moderate damage), the latest matching tornado is March 14, 2025, and minimum reported property damage totals $150K.
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Key Tornado Statistics
Key Tornado Facts for O Fallon, Illinois
Top local patterns from the historical tornado records in this group.
Average 1.0 tornadoes per year (0.1/yr in last decade)
March is the peak tornado month with 1 recorded events
Deadliest tornado: EF1 in O Fallon, Illinois with 0 deaths
2025 was the most active year with 1 tornadoes
The 2020s had the most tornado activity (1 events)
Longest tornado: 5.9 miles in O Fallon, Illinois
Widest tornado: 450.0 yards in O Fallon, Illinois
Most tornadoes in one day: 1 on Mar 14, 2025
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In O Fallon, Illinois, March is the most active month with 1 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 2025 was the most active year with 1 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 2025 with at least $150K 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 O Fallon, Illinois.
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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 |
|---|---|---|---|---|---|---|---|
| March 14, 2025 | EF1 | St. Clair, Illinois | 5.9 mi | 450 yd | 0 | 0 | $150K |
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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.