Tornado History Map

Dallas County, Iowa tornado history

61 tornadoes recorded in or across Dallas County from 1955 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 Dallas County

The Storm Prediction Center records 61 tornadoes whose paths touched Dallas County, Iowa between 1955 and 2024. None of them is recorded as having killed anyone. The busiest month is May, with 31 tornadoes. The strongest was an F4 on 27 May 1995. The most recent was on 24 May 2024.

  • 61tornadoes
  • 0deaths
  • 91injuries
  • 1,037per 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 Dallas County?

RatingTornadoesShare
F0 / EF03659%
F1 / EF11118%
F2 / EF2711%
F3 / EF312%
F4 / EF435%
F5 / EF500%
Unknown rating35%

Dallas County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 14 in 2000s.1950s21960s51970s61980s121990s82000s142010s82020s6

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

Show the numbers
PeriodCount
1950s2
1960s5
1970s6
1980s12
1990s8
2000s14
2010s8
2020s6
Tornadoes by month
Bar chart of tornadoes by period. The most is 31 in May.Jan0Feb0Mar2Apr6May31Jun13Jul3Aug1Sep2Oct1Nov2Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar2
Apr6
May31
Jun13
Jul3
Aug1
Sep2
Oct1
Nov2
Dec0

Records for Dallas County

Notable tornadoes in Dallas County

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

More in Iowa

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