Harmon County, Oklahoma tornadoes

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36confirmed tornadoes since NOAA records began in 1950 (the first here in 1952). Most recent: November 18, 2024, EFU. 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 Harmon County

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The record

At a glance

Total361950 to 2025
Per year0.5average since 1950
Peak monthMay20 of 36
StrongestF2May 6, 1965
Deaths0whole paths, see note
Injuries6whole paths, see note

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

Seasons

When tornadoes hit here

By month

200 Jan: 0Feb: 1Mar: 2Apr: 5May: 20Jun: 3Jul: 0Aug: 0Sep: 1Oct: 1Nov: 3Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 20 of 36 tornadoes.

By time of day

110 12 AM: 0: 2: 23 AM: 1: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 0: 03 PM: 4: 3: 116 PM: 3: 5: 19 PM: 2: 0: 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

40 1950: 0: 0: 1: 2: 0: 1: 0: 1: 1: 01960: 0: 0: 0: 0: 0: 1: 0: 0: 2: 01970: 0: 0: 0: 0: 0: 0: 1: 0: 0: 01980: 0: 0: 4: 3: 0: 0: 1: 0: 0: 01990: 0: 0: 0: 0: 0: 1: 0: 0: 0: 32000: 0: 0: 0: 1: 0: 0: 0: 0: 0: 02010: 1: 0: 0: 0: 0: 0: 0: 0: 0: 32020: 0: 1: 3: 1: 4: 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
13
EF1
12
EF2
4
Unknown
7

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

Strongest

F2, May 6, 1965

31.3 mile path Longest path

31.3 miles, F2

May 6, 1965, whole path Widest

500 yards, F2

May 13, 1983
Every tornado

All 36 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Nov 18, 2024EFU2.72 mi30 yd00
Nov 18, 2024EF14 mi150 yd00
Nov 18, 2024EF13.43 mi50 yd00
May 23, 2024EF00.85 mi20 yd00
Feb 26, 2023EFU7.5 mi200 yd00
May 31, 2022EFU0.3 mi20 yd00
May 31, 2022EF00.5 mi20 yd00
May 31, 2022EF02.36 mi180 yd00
Mar 13, 2021EFU0.2 mi20 yd00
May 20, 2019EFU0.1 mi20 yd00
May 20, 2019EFU0.3 mi30 yd00
May 20, 2019EFU0.5 mi50 yd00
May 12, 2010EF02.73 mi50 yd00
Apr 15, 2003F29 mi350 yd00
May 25, 1999F00.2 min/a00
May 25, 1999F00.1 min/a00
Apr 2, 1999F17.5 mi150 yd00
Jun 3, 1995F00.2 mi23 yd00
Oct 1, 1986F110 mi50 yd00
May 13, 1983F00.1 mi50 yd00
May 13, 1983F215 mi500 yd00
Mar 3, 1983F05 mi10 yd00
May 15, 1982F00.1 mi10 yd00
May 11, 1982F10.1 mi10 yd00
May 11, 1982F10.5 mi50 yd00
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.