Tornado History

Mason Tornado History

This county-level tornado history page focuses on Mason, Illinois. The records below identify 42 tornadoes from 1951 through 2026, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $6.4M, with 1 deaths and 35 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes42
Total Deaths1
Total Injuries35
Property Damage$6.4M
Avg Length6.0 mi
Avg Width93 yd

Key Tornado Facts for Mason, Illinois

Top local patterns from the historical tornado records in this group.

Average 0.6 tornadoes per year (1.0/yr in last decade)
April is the peak tornado month with 9 recorded events
Deadliest tornado: F3 in Mason, Illinois with 1 deaths
1998 was the most active year with 4 tornadoes
The 1990s had the most tornado activity (8 events)
Longest tornado: 47.4 miles in Mason, Illinois
Widest tornado: 600.0 yards in Mason, Illinois
Most tornadoes in one day: 4 on Apr 7, 1998

Monthly Distribution

Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.

January
February
March
April
May
June
July
August
September
October
November
December

Summary: In Mason, Illinois, April is the most active month with 9 tornadoes.

Annual Tornado Trend

Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.

4320

Summary: 1998 was the most active year with 4 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
EF1
F2
F3

Summary: F1 tornadoes are the most common in this group, with 13 recorded events.

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.

$2.5M$250K$25K$0

Summary: The highest reported property damage year in this group is 1968 with at least $2.5M in NOAA-listed property damage.

Historical Track Sketch

F3 May 15, 19681968F3 January 24, 19671967F2 November 29, 19751975F2 November 13, 19511951F2 March 14, 19571957F2 April 19, 19961996F2 April 7, 19981998F2 May 10, 20032003F1 April 13, 19811981F1 June 1, 19991999EF1 April 15, 20112011EF1 March 6, 20172017EF1 December 1, 20182018F1 December 18, 19571957F1 November 27, 1990F1 July 12, 1972F1 April 2, 1964F1 January 24, 1967F1 April 19, 1996F1 April 7, 1998F1 April 7, 1998F1 May 10, 2003F1 May 10, 2003F1 May 30, 2003EF1 March 10, 2026EF1 March 10, 2026EF0 March 23, 2021EF0 September 10, 2015F0 August 19, 1961F0 December 4, 1973F0 June 19, 1974F0 June 19, 1974F0 November 18, 1985F0 June 2, 1987F0 April 7, 1998F0 August 18, 2001EF0 July 8, 2009EF0 December 1, 2018EF0 August 1, 2022EF0 March 5, 2022EF0 June 18, 2025EF0 September 20, 2025© OpenStreetMap contributors
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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.

DateRatingAreaLengthWidthDeathsInjuriesMin. property damage
May 15, 1968F3Mason, Illinois12.6 mi600 yd025$2.5M
January 24, 1967F3Mason, Illinois5.1 mi80 yd13$25K
November 29, 1975F2Mason, Illinois18.6 mi33 yd00$250K
November 13, 1951F2Mason, Illinois47.4 mi50 yd00$25K
March 14, 1957F2Mason, Illinois0 mi100 yd00$25K
April 19, 1996F2Mason, Illinois9 mi250 yd01N/A
April 7, 1998F2Mason, Illinois3 mi66 yd00N/A
May 10, 2003F2Mason, Illinois2.5 mi100 yd01N/A
April 13, 1981F1Mason, Illinois25.6 mi33 yd00$2.5M
June 1, 1999F1Mason, Illinois3.5 mi200 yd00$500K
April 15, 2011EF1Mason, Illinois3.08 mi100 yd01$300K
March 6, 2017EF1Mason, Illinois6.76 mi150 yd00$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.

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