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Tornadoes in Arizona

Arizona has recorded 302 tornadoes from 1950 through 2025, about 4.8 per year over the last 30 years. They killed 3 people and injured 152. July is the most active month.

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Map data: NWS, OpenFreeMap, OpenStreetMap

Tornadoes per year

96: 996997: 597598: 298299: 599501: 301303: 903904: 304305: 805806: 606608: 308309: 409410: 15101511: 311312: 112113: 113114: 314315: 515516: 116117: 317318: 518519: 12191220: 220221: 621622: 922923: 523524: 724725: 8258
Arizona tornadoes per year, 1996–2025
50s: 1850s1860s: 3060s3070s: 5270s5280s: 2480s2490s: 5690s5600s: 3600s3610s: 4910s4920s: 3720s37
Tornadoes per decade (the 2020s are partial)

When tornadoes happen in Arizona

Jan: 6Jan6Feb: 10Feb10Mar: 12Mar12Apr: 7Apr7May: 20May20Jun: 23Jun23Jul: 58Jul58Aug: 57Aug57Sep: 49Sep49Oct: 41Oct41Nov: 16Nov16Dec: 3Dec3
Tornadoes by month, 1950–2025
EF0: 196EF0196EF1: 76EF176EF2: 16EF216EF3: 4EF34EF4: 0EF4EF5: 0EF5
Tornadoes by (E)F rating

Ratings before February 2007 use the original Fujita (F) scale; later tornadoes use the Enhanced Fujita (EF) scale. How the EF scale works.

Deadliest tornadoes in Arizona

DateRatingCountyPath lengthWidthDeathsInjuries
August 27, 1964F2Pima County0.1 mi10 yd29
June 23, 1974F1Pima County1 mi50 yd140

Strongest tornadoes in Arizona

DateRatingCountyPath lengthWidthDeathsInjuries
October 6, 2010EF3Coconino County30.1 mi800 yd00
August 4, 1957F3Maricopa County12 mi10 yd00
October 6, 2010EF3Coconino County4 mi1,100 yd00
August 10, 1972F3Yavapai County0.1 mi10 yd00
August 27, 1964F2Pima County0.1 mi10 yd29
October 6, 2010EF2Coconino County26 mi500 yd07
October 6, 2010EF2Coconino County18.6 mi600 yd00
October 6, 2010EF2Coconino County14.8 mi400 yd00
June 21, 1972F2Maricopa County13.5 mi10 yd03
October 24, 1992F2Coconino County5.5 mi200 yd00

Most recent tornadoes

DateRatingCountyPath lengthWidthDeathsInjuries
November 18, 2025EF0Maricopa County1.1 mi30 yd00
September 27, 2025?Maricopa County0.1 mi30 yd00
September 16, 2025?Pima County0 mi1 yd00
September 12, 2025?Pima County0 mi1 yd00
July 15, 2025EF0Navajo County0.1 mi50 yd00
June 4, 2025?Apache County0.5 mi50 yd00
May 6, 2025EF0Yavapai County0.1 mi30 yd00
April 2, 2025?Maricopa County0.5 mi5 yd00
October 18, 2024EF0Coconino County1.5 mi10 yd00
August 21, 2024?Cochise County0.3 mi75 yd00

Counties with the most tornadoes

CountyTornadoes since 1950Per 1,000 sq mi
Maricopa County7521109541.4
Coconino County496817254
Pinal County3014477361.7
Yavapai County299246583.8
Pima County287892044.8
Navajo County235987536.4
Cochise County187507246.4
Mohave County173302580.3
Apache County173931952.1
Yuma County125636561.5
Gila County42177385.5
Santa Cruz County12095469.3
La Paz County1575939.5
Graham County1560363.5
Greenlee County00

About this data

Tornado records come from the NOAA Storm Prediction Center database of confirmed tornadoes, 1950–2025. Tornadoes that crossed state lines are counted in the state where they began. Counts in the early decades are lower partly because many weak tornadoes went unreported before Doppler radar and storm spotter networks.