Larimer County, Colorado tornadoes

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33confirmed tornadoes since NOAA records began in 1950 (the first here in 1954). Most recent: May 18, 2018, EF0. 2026 so far: 0 preliminary reports preliminary

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Map

Every tornado path in the county

Tornado paths, 1950 to 2025
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(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5Unrated

Each path is a straight line from where the tornado started to where it ended, which is all most NOAA records hold. Tap a path for its details.

Recent warnings

Recent warnings in Larimer County

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The record

At a glance

Total331950 to 2025
Per year0.4average since 1950
Peak monthJune11 of 33
StrongestEF3May 22, 2008
Deaths1whole paths, see note
Injuries78whole paths, see note

Deaths and injuries are NOAA's totals for each tornado's whole path, which can extend beyond Larimer County.

Seasons

When tornadoes hit here

By month

110 Jan: 0Feb: 0Mar: 0Apr: 0May: 9Jun: 11Jul: 8Aug: 5Sep: 0Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 11 of 33 tornadoes.

By time of day

90 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 1: 1: 212 PM: 0: 0: 33 PM: 5: 9: 46 PM: 3: 2: 29 PM: 1: 0: 012 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

40 1950: 0: 0: 0: 0: 1: 0: 0: 2: 0: 01960: 0: 0: 0: 1: 0: 1: 0: 0: 0: 01970: 0: 0: 0: 0: 0: 0: 1: 0: 0: 11980: 1: 0: 1: 1: 0: 1: 0: 2: 3: 11990: 4: 1: 0: 2: 3: 1: 0: 0: 0: 02000: 0: 0: 1: 0: 0: 1: 0: 0: 1: 02010: 0: 0: 0: 0: 0: 1: 0: 0: 1: 02020: 0: 0: 0: 0: 0: 019501960197019801990200020102020

The line is the five-year average. Tornadoes before about 1953 were under-reported, and better radar since the 1990s finds more weak ones.

By rating

EF0
16
EF1
12
EF2
3
EF3
2

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.

The record

Notable tornadoes

Deadliest

EF3, May 22, 2008

1 deaths, 78 injuries Strongest

EF3, May 22, 2008

38.69 mile path Longest path

38.69 miles, EF3

May 22, 2008, whole path Widest

1,760 yards, EF3

May 22, 2008
Every tornado

All 33 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
May 18, 2018EF00.01 mi25 yd00
Jun 4, 2015EF36.71 mi440 yd00
May 22, 2008EF338.69 mi1,760 yd178
Jul 25, 2005F00.1 mi50 yd00
May 9, 2002F00.1 mi50 yd00
May 6, 1995F00.1 mi50 yd00
Jul 16, 1994F00.1 mi10 yd00
Jul 16, 1994F00.1 mi10 yd00
Jul 16, 1994F00.1 mi10 yd00
Aug 5, 1993F00.1 mi10 yd00
May 28, 1993F00.1 mi100 yd00
Jun 22, 1991F00.1 mi10 yd00
Jul 8, 1990F03 mi13 yd00
Jun 9, 1990F223 mi200 yd00
Jun 9, 1990F11 mi50 yd00
Jun 6, 1990F01 mi23 yd00
May 31, 1989F00.1 mi13 yd00
Aug 7, 1988F00.1 mi20 yd00
Jun 25, 1988F11 mi63 yd00
Jun 15, 1988F11 mi50 yd00
Aug 7, 1987F10.5 mi20 yd00
Jun 18, 1987F11 mi40 yd00
Aug 2, 1985F10.3 mi20 yd00
Jul 7, 1983F10.2 mi30 yd00
Jun 25, 1982F11 mi100 yd00
Cities

Cities in Larimer County

Each city page counts every tornado path within 10 miles of the city, including paths just over the county line.

Nearby

Nearby counties

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025, and SPC preliminary reports for 2026. Page built October 13, 2026.