Arizona tornadoes

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303 confirmed tornadoes since 1950. Most recent: November 18, 2025, EF0. 2026 so far: 7 preliminary reports preliminary

Counties with the most tornadoes

CountyTornadoes since 1950Per 1,000 sq mi
Maricopa County758
Coconino County493
Pinal County306
Yavapai County294
Pima County283
Navajo County232
Cochise County183
Mohave County181
Apache County172
Yuma County122
Gila County41
Graham County10
La Paz County10
Santa Cruz County11
Greenlee County00

When tornadoes hit here

By month

580 Jan: 6Feb: 10Mar: 12Apr: 8May: 20Jun: 23Jul: 58Aug: 57Sep: 49Oct: 41Nov: 16Dec: 3JanFebMarAprMayJunJulAugSepOctNovDec

July is the peak month, with 58 of 303 tornadoes.

By time of day

420 12 AM: 1: 0: 23 AM: 0: 3: 36 AM: 2: 1: 39 AM: 5: 7: 1112 PM: 18: 24: 283 PM: 34: 33: 426 PM: 39: 17: 169 PM: 7: 5: 212 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 5:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

170 1950: 0: 0: 1: 0: 2: 1: 3: 5: 4: 21960: 2: 3: 3: 1: 2: 0: 5: 5: 5: 41970: 3: 7: 17: 2: 10: 1: 5: 2: 2: 31980: 1: 3: 1: 5: 4: 3: 2: 3: 1: 11990: 3: 2: 13: 8: 5: 4: 9: 5: 2: 52000: 0: 4: 0: 9: 3: 8: 6: 0: 3: 42010: 15: 3: 1: 1: 3: 5: 1: 3: 5: 122020: 2: 6: 9: 5: 7: 819501960197019801990200020102020

The line is the five-year average. Tornadoes before about 1953 were under-reported, and better radar since the 1990s finds more weak ones. This year so far: 7 preliminary reports.

By rating

EF0
196
EF1
77
EF2
16
EF3
4
Unknown
10

Ratings before February 2007 use the original F scale; the numbers line up with today's EF scale. Unknown means NOAA could not assign a rating.

Notable tornadoes

Deadliest

F2, August 27, 1964

2 deaths Longest path

32.4 miles, F1

September 1, 1971

Most recent tornadoes

DateRatingPath lengthWidthDeathsInjuries
Nov 18, 2025EF01.11 mi30 yd00
Sep 27, 2025EFU0.1 mi30 yd00
Sep 16, 2025EFU0.01 mi1 yd00
Sep 12, 2025EFU0.01 mi1 yd00
Jul 15, 2025EF00.1 mi50 yd00
Jun 4, 2025EFU0.53 mi50 yd00
May 6, 2025EF00.14 mi30 yd00
Apr 2, 2025EFU0.45 mi5 yd00
Oct 18, 2024EF01.45 mi10 yd00
Aug 21, 2024EFU0.25 mi75 yd00
Jul 26, 2024EF01 mi10 yd00
Jul 2, 2024EF13.25 mi150 yd00
Jun 7, 2024EF01 mi10 yd00
May 13, 2024EF00.1 mi10 yd00
Mar 7, 2024EFU0.32 mi40 yd00
Nov 19, 2023EF12.4 mi100 yd00
Sep 9, 2023EF00.1 mi10 yd00
Aug 13, 2023EF00.1 mi25 yd00
Aug 8, 2023EF04.99 mi10 yd00
Jul 17, 2023EF05.47 mi10 yd00

Every Arizona county

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025. A tornado that crossed a state line counts in each state it touched.