Ransom County, North Dakota tornadoes

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35 confirmed tornadoes since NOAA records began in 1950 (the first here in 1957). Most recent: June 20, 2025, EF0. 2026 so far: 0 preliminary reports preliminary

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Every tornado path in the county

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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.

At a glance

Total351950 to 2025
Per year0.5average since 1950
Peak monthJune15 of 35
StrongestEF5Jun 20, 2025
Deaths3whole paths, see note
Injuries8whole paths, see note

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

When tornadoes hit here

By month

150 Jan: 0Feb: 0Mar: 0Apr: 1May: 2Jun: 15Jul: 8Aug: 8Sep: 1Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 15 of 35 tornadoes.

By time of day

90 12 AM: 0: 0: 23 AM: 1: 0: 06 AM: 0: 2: 09 AM: 0: 0: 012 PM: 0: 0: 03 PM: 0: 2: 26 PM: 9: 5: 19 PM: 6: 4: 112 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 6:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

50 1950: 0: 0: 0: 0: 0: 0: 0: 2: 0: 11960: 1: 0: 0: 0: 0: 1: 1: 2: 0: 11970: 2: 0: 0: 1: 0: 0: 0: 0: 0: 01980: 1: 0: 1: 0: 0: 0: 0: 1: 0: 01990: 0: 0: 0: 0: 0: 0: 0: 1: 2: 12000: 0: 0: 0: 0: 0: 1: 2: 3: 1: 02010: 3: 0: 0: 0: 0: 0: 0: 0: 0: 02020: 0: 0: 0: 0: 1: 519501960197019801990200020102020

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
14
EF1
10
EF2
8
EF5
1
Unknown
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.

Notable tornadoes

Deadliest

EF5, June 20, 2025

3 deaths, 0 injuries Strongest

EF5, June 20, 2025

12.1 mile path Longest path

28.5 miles, F2

August 15, 1999, whole path Widest

1,850 yards, EF5

June 20, 2025

All 35 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 20, 2025EF00.84 mi20 yd00
Jun 20, 2025EF26.82 mi1,351 yd00
Jun 20, 2025EF512.1 mi1,850 yd30
Jun 20, 2025EFU0.6 mi50 yd00
Jun 20, 2025EF25.2 mi400 yd00
Jun 2, 2024EFU0.01 mi50 yd00
Aug 12, 2010EF04.61 mi25 yd00
Jul 14, 2010EF29.12 mi300 yd00
Jul 14, 2010EF17 mi250 yd00
May 24, 2008EF00.2 mi25 yd00
Jul 15, 2007EF23 mi200 yd00
Jul 15, 2007EF110 mi200 yd00
Jun 17, 2007EF02 mi50 yd00
Aug 5, 2006F03 mi25 yd00
Jun 5, 2006F00.4 mi25 yd00
Jun 20, 2005F11 mi100 yd00
Aug 15, 1999F228.5 mi283 yd00
Jul 18, 1998F13 mi30 yd00
May 27, 1998F00.2 mi30 yd00
Jun 28, 1997F00.5 mi23 yd00
Jun 16, 1987F00.2 mi13 yd00
Apr 15, 1982F27 mi440 yd00
Jul 10, 1980F10.1 mi10 yd00
Jun 16, 1973F10.1 mi10 yd00
Sep 6, 1970F115.5 mi10 yd00

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 12, 2026.