Tornado History Map

Louisa County, Iowa tornado history

20 tornadoes recorded in or across Louisa County from 1954 to 2024, coloured by rating on the map.

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Years1950 to 2025
Rating (F or EF scale)

Shows tornadoes that started in, or crossed, the chosen state. To see how many have passed near you, search a town or ZIP code, or tap the map.

Key
  • F0 / EF0 Light damage
  • F1 / EF1 Moderate damage
  • F2 / EF2 Considerable damage
  • F3 / EF3 Severe damage
  • F4 / EF4 Devastating damage
  • F5 / EF5 Incredible damage
  • Unknown Not rated (2007 onwards)

How to read the lines. Each line is one tornado, drawn from where it started to where it ended, coloured and sized by its rating. A dot means the record has no end point. Tap a line for its details, or tap anywhere else to see how many tornadoes have passed nearby. Weaker tornadoes appear as you zoom in. Ratings use the Fujita (F) scale before 1 February 2007 and the Enhanced Fujita (EF) scale from then on.

Tornadoes in Louisa County

The Storm Prediction Center records 20 tornadoes whose paths touched Louisa County, Iowa between 1954 and 2024. None of them is recorded as having killed anyone. The busiest month is May, with 8 tornadoes. The strongest was an EF3 on 1 June 2007. The most recent was on 16 April 2024.

  • 20tornadoes
  • 0deaths
  • 10injuries
  • 498per 10,000 sq mi of land

A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.

How strong were the tornadoes in Louisa County?

RatingTornadoesShare
F0 / EF0630%
F1 / EF1630%
F2 / EF2735%
F3 / EF315%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Louisa County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 4 in 1970s.1950s11960s21970s41980s41990s32000s32010s22020s1

The 2020s only run to 2024, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s1
1960s2
1970s4
1980s4
1990s3
2000s3
2010s2
2020s1
Tornadoes by month
Bar chart of tornadoes by period. The most is 8 in May.Jan2Feb0Mar1Apr4May8Jun5Jul0Aug0Sep0Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan2
Feb0
Mar1
Apr4
May8
Jun5
Jul0
Aug0
Sep0
Oct0
Nov0
Dec0

Records for Louisa County

  • Strongest: Iowa tornado1 June 2007, EF3, 7 injuries, 15.8 miles long
  • Longest path: Iowa tornado3 April 1981, F0, 103.5 miles long
  • Most recent: Iowa tornado16 April 2024, EF2, 41.7 miles long

Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.

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