Tornado History Map

Maricopa County, Arizona tornado history

75 tornadoes recorded in or across Maricopa County from 1955 to 2025, 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 Maricopa County

The Storm Prediction Center records 75 tornadoes whose paths touched Maricopa County, Arizona between 1955 and 2025. None of them is recorded as having killed anyone. The busiest month is July, with 12 tornadoes. The strongest was an F3 on 4 August 1957. The most recent was on 18 November 2025.

  • 75tornadoes
  • 0deaths
  • 58injuries
  • 82per 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 Maricopa County?

RatingTornadoesShare
F0 / EF04155%
F1 / EF12533%
F2 / EF268%
F3 / EF311%
F4 / EF400%
F5 / EF500%
Unknown rating23%

Maricopa County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 18 in 1970s.1950s81960s91970s181980s81990s152000s12010s122020s4

The 2020s only run to 2025, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s8
1960s9
1970s18
1980s8
1990s15
2000s1
2010s12
2020s4
Tornadoes by month
Bar chart of tornadoes by period. The most is 12 in Jul.Jan5Feb8Mar4Apr1May6Jun5Jul12Aug12Sep12Oct4Nov5Dec1
Show the numbers
PeriodCount
Jan5
Feb8
Mar4
Apr1
May6
Jun5
Jul12
Aug12
Sep12
Oct4
Nov5
Dec1

Records for Maricopa County

  • Strongest: Arizona tornado4 August 1957, F3, 12 miles long
  • Longest path: Arizona tornado1 September 1971, F1, 32.4 miles long
  • Most recent: Arizona tornado18 November 2025, EF0, 1.1 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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