Tornado History Map

Clackamas County, Oregon tornado history

8 tornadoes recorded in or across Clackamas County from 1957 to 2022, coloured by rating on the map.

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Years1950 to 2025
Rating (F or EF scale)

Shows tornadoes that started in, or crossed, the chosen state. To see how many have passed near you, search a town or ZIP code, or tap the map.

Key
  • F0 / EF0 Light damage
  • F1 / EF1 Moderate damage
  • F2 / EF2 Considerable damage
  • F3 / EF3 Severe damage
  • F4 / EF4 Devastating damage
  • F5 / EF5 Incredible damage
  • Unknown Not rated (2007 onwards)

How to read the lines. Each line is one tornado, drawn from where it started to where it ended, coloured and sized by its rating. A dot means the record has no end point. Tap a line for its details, or tap anywhere else to see how many tornadoes have passed nearby. Weaker tornadoes appear as you zoom in. Ratings use the Fujita (F) scale before 1 February 2007 and the Enhanced Fujita (EF) scale from then on.

Tornadoes in Clackamas County

The Storm Prediction Center records 8 tornadoes whose paths touched Clackamas County, Oregon between 1957 and 2022. None of them is recorded as having killed anyone. The busiest month is October, with 6 tornadoes. The strongest was an F1 on 12 April 1957. The most recent was on 22 October 2022.

  • 8tornadoes
  • 0deaths
  • 0injuries
  • 43per 10,000 sq mi of land

A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.

How strong were the tornadoes in Clackamas County?

RatingTornadoesShare
F0 / EF0563%
F1 / EF1338%
F2 / EF200%
F3 / EF300%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Clackamas County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 3 in 2000s.1950s11980s11990s12000s32020s2

The 2020s only run to 2022, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s1
1980s1
1990s1
2000s3
2020s2
Tornadoes by month
Bar chart of tornadoes by period. The most is 6 in Oct.Jan0Feb0Mar0Apr1May0Jun1Jul0Aug0Sep0Oct6Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr1
May0
Jun1
Jul0
Aug0
Sep0
Oct6
Nov0
Dec0

Records for Clackamas County

  • Strongest and Longest path: Oregon tornado12 April 1957, F1, 2.5 miles long
  • Most recent: Oregon tornado22 October 2022, EF0, 0.9 miles long

Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.

More in Oregon

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