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Tornado History

Harper Tornado History

This county-level tornado history page focuses on Harper, Kansas. The records below identify 58 tornadoes from 1953 through 2025, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $3.3M, with 0 deaths and 1 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes58
Total Deaths0
Total Injuries1
Property Damage$3.3M
Avg Length3.3 mi
Avg Width116 yd

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Key Tornado Facts for Harper, Kansas

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

Average 0.8 tornadoes per year (0.4/yr in last decade)
May is the peak tornado month with 28 recorded events
Deadliest tornado: F0 in Harper, Kansas with 0 deaths
2004 was the most active year with 15 tornadoes
The 2000s had the most tornado activity (24 events)
Longest tornado: 22.33 miles in Harper, Kansas
Widest tornado: 1,000.0 yards in Harper, Kansas
Most tornadoes in one day: 10 on May 12, 2004

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 Harper, Kansas, May is the most active month with 28 tornadoes.

Annual Tornado Trend

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

151050

Summary: 2004 was the most active year with 15 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
EF1
F2
EF2
EF3
F4
Unknown
EFU

Summary: F0 tornadoes are the most common in this group, with 26 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.

$2.4M$240K$24K$0

Summary: The highest reported property damage year in this group is 2004 with at least $2.4M in NOAA-listed property damage.

Historical Track Sketch

F4 May 12, 20042004EF3 May 19, 20122012EF3 May 19, 20122012F2 May 29, 20042004F2 May 12, 20042004F2 May 12, 20042004F2 May 12, 20042004F2 May 17, 19591959EF2 May 25, 20242024F1 May 29, 20042004F1 October 18, 19731973F1 May 17, 19811981F1 March 13, 19901990F1 May 12, 20042004F1 May 12, 2004F1 May 29, 2004F1 October 11, 1973F1 May 25, 1990F1 June 16, 1975F1 May 27, 1955F1 May 12, 2004EF1 April 14, 2012F0 May 24, 1998F0 April 5, 1999F0 July 9, 2003F0 June 14, 1954F0 April 26, 1984F0 April 26, 1984F0 April 26, 1991F0 April 20, 1974F0 April 17, 1991F0 March 30, 1953F0 April 27, 1955F0 April 2, 1956F0 June 30, 1981F0 June 30, 1981F0 May 10, 1986F0 March 8, 1992F0 June 3, 2001F0 June 5, 2001F0 May 8, 2002F0 June 12, 2002F0 May 12, 2004F0 May 12, 2004F0 May 12, 2004F0 May 29, 2004F0 May 29, 2004F0 March 21, 2005EF0 May 6, 2007EF0 March 7, 2009EF0 March 7, 2009EF0 December 14, 2014EF0 May 6, 2015EF0 June 17, 2025Unknown May 4, 1959Unknown June 30, 1957EFU June 23, 2019EFU June 23, 2019© OpenStreetMap contributors

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 12, 2004F4Harper, Kansas1.2 mi500 yd01$275K
May 19, 2012EF3Harper, Kansas5.3 mi100 yd00N/A
May 19, 2012EF3Harper, Kansas9.68 mi150 yd00N/A
May 29, 2004F2Harper, Kansas8 mi500 yd00$175K
May 12, 2004F2Harper, Kansas1.8 mi200 yd00$140K
May 12, 2004F2Harper, Kansas2 mi300 yd00$140K
May 12, 2004F2Harper, Kansas1 mi100 yd00$100K
May 17, 1959F2Harper, Kansas2 mi400 yd00N/A
May 25, 2024EF2Harper, Kansas6.7 mi100 yd00N/A
May 29, 2004F1Harper, Kansas2.5 mi440 yd00$1.2M
October 18, 1973F1Harper, Kansas0.4 mi100 yd00$250K
May 17, 1981F1Harper, Kansas7.2 mi100 yd00$250K

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Source And Limits

Data source: NOAA/NCEI. TornadoTrace summarizes historical records for screening and research. Coordinates, damage estimates, narratives, and event details can be approximate, incomplete, revised, or missing. Do not use this page as legal, insurance, engineering, real estate, emergency management, or safety advice.