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Tornado History

Chisago Tornado History

This county-level tornado history page focuses on Chisago, Minnesota. The records below identify 18 tornadoes from 1954 through 2020, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $1.0M, with 0 deaths and 2 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes18
Total Deaths0
Total Injuries2
Property Damage$1.0M
Avg Length1.5 mi
Avg Width134 yd

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Key Tornado Facts for Chisago, Minnesota

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

Average 0.3 tornadoes per year (0.4/yr in last decade)
July is the peak tornado month with 9 recorded events
Deadliest tornado: F1 in Chisago, Minnesota with 0 deaths
1999 was the most active year with 3 tornadoes
The 2010s had the most tornado activity (5 events)
Longest tornado: 9.2 miles in Chisago, Minnesota
Widest tornado: 880.0 yards in Chisago, Minnesota
Most tornadoes in one day: 3 on Jul 9, 1999

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 Chisago, Minnesota, July 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.

3210

Summary: 1999 was the most active year with 3 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
EF1
F4

Summary: F0 tornadoes are the most common in this group, with 8 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.

$500K$50K$5K$0

Summary: The highest reported property damage year in this group is 2019 with at least $500K in NOAA-listed property damage.

Historical Track Sketch

F4 May 21, 19571957EF1 July 28, 20192019F1 June 17, 19541954F1 May 18, 19621962EF0 August 19, 20092009EF0 June 21, 20132013F0 July 10, 19661966F0 July 20, 19871987F0 July 9, 19991999F0 July 9, 19991999F0 July 9, 19991999F0 June 24, 20032003F0 May 30, 20042004F0 June 11, 20052005EF0 June 17, 2010EF0 July 12, 2017EF0 July 12, 2017EF0 July 18, 2020© 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 21, 1957F4Chisago, Minnesota9.2 mi100 yd02$25K
July 28, 2019EF1Chisago, Minnesota3.76 mi250 yd00$500K
June 17, 1954F1Chisago, Minnesota3.8 mi880 yd00$250K
May 18, 1962F1Chisago, Minnesota2 mi150 yd00$2K
August 19, 2009EF0Chisago, Minnesota0.9 mi200 yd00$100K
June 21, 2013EF0Chisago, Minnesota0.5 mi50 yd00$100K
July 10, 1966F0Chisago, Minnesota0 mi33 yd00$25K
July 20, 1987F0Chisago, Minnesota0.1 mi10 yd00N/A
July 9, 1999F0Chisago, Minnesota0.5 mi25 yd00N/A
July 9, 1999F0Chisago, Minnesota0.5 mi25 yd00N/A
July 9, 1999F0Chisago, Minnesota0.2 mi25 yd00N/A
June 24, 2003F0Chisago, Minnesota0.3 mi25 yd00N/A

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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.