Colorado tornadoes

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2,479 confirmed tornadoes since 1950. Most recent: September 16, 2025, EFU. 2026 so far: 34 preliminary reports preliminary

Counties with the most tornadoes

CountyTornadoes since 1950Per 1,000 sq mi
Weld County30075
Washington County23593
Adams County194166
Kit Carson County13261
Elbert County12769
Lincoln County11846
Yuma County11448
Arapahoe County103129
Logan County10054
Cheyenne County9855
El Paso County9746
Kiowa County9554
Morgan County9574
Prowers County9055
Baca County8834

When tornadoes hit here

By month

8900 Jan: 0Feb: 2Mar: 24Apr: 122May: 591Jun: 890Jul: 499Aug: 253Sep: 58Oct: 40Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 890 of 2479 tornadoes.

By time of day

3920 12 AM: 8: 12: 43 AM: 2: 0: 06 AM: 2: 1: 09 AM: 6: 9: 3612 PM: 53: 131: 2783 PM: 329: 392: 3846 PM: 313: 215: 1529 PM: 91: 45: 1612 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 4:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

980 1950: 2: 8: 3: 14: 9: 18: 10: 24: 18: 11960: 14: 13: 25: 3: 2: 32: 11: 21: 6: 101970: 5: 16: 11: 11: 12: 20: 42: 32: 18: 371980: 25: 25: 58: 32: 41: 26: 20: 40: 47: 221990: 55: 76: 81: 71: 46: 48: 98: 47: 38: 412000: 60: 46: 25: 29: 84: 34: 20: 55: 39: 442010: 71: 21: 33: 27: 49: 54: 39: 19: 45: 492020: 35: 49: 31: 89: 21: 2619501960197019801990200020102020

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: 34 preliminary reports.

By rating

EF0
1547
EF1
602
EF2
132
EF3
25
EF4
1
Unknown
172

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

F3, June 27, 1960

2 deaths Longest path

70.1 miles, F0

May 20, 1957

Most recent tornadoes

DateRatingPath lengthWidthDeathsInjuries
Sep 16, 2025EFU0.01 mi50 yd00
Sep 13, 2025EF10.84 mi95 yd00
Sep 9, 2025EFU0.01 mi50 yd00
Aug 10, 2025EFU0.37 mi50 yd00
Aug 9, 2025EFU4.59 mi75 yd00
Aug 9, 2025EFU0.06 mi50 yd00
Jul 30, 2025EF00.34 mi20 yd00
Jul 30, 2025EF10.8 mi75 yd00
Jul 14, 2025EFU0.23 mi10 yd00
Jul 14, 2025EF10.26 mi50 yd00
Jul 11, 2025EFU0.36 mi20 yd00
Jul 6, 2025EFU1.08 mi50 yd00
Jun 17, 2025EF10.43 mi150 yd00
Jun 16, 2025EFU0.01 mi10 yd00
Jun 13, 2025EFU0.15 mi10 yd00
Jun 4, 2025EFU1.16 mi20 yd00
May 27, 2025EF10.87 mi10 yd00
May 23, 2025EFU0.51 mi15 yd00
May 23, 2025EF28.36 mi400 yd00
May 23, 2025EF111.2 mi100 yd00

Every Colorado county

Coming soon

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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.