Tornado History Map

Snohomish County, Washington tornado history

7 tornadoes recorded in or across Snohomish County from 1970 to 2006, 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 Snohomish County

The Storm Prediction Center records 7 tornadoes whose paths touched Snohomish County, Washington between 1970 and 2006. None of them is recorded as having killed anyone. The busiest month is May, with 2 tornadoes. The strongest was an F2 on 13 May 1986. The most recent was on 16 June 2006.

  • 7tornadoes
  • 0deaths
  • 0injuries
  • 34per 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 Snohomish County?

RatingTornadoesShare
F0 / EF0343%
F1 / EF1229%
F2 / EF2229%
F3 / EF300%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Snohomish County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 3 in 2000s.1970s21980s11990s12000s3

The 2000s only run to 2006, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1970s2
1980s1
1990s1
2000s3
Tornadoes by month
Bar chart of tornadoes by period. The most is 2 in May.Jan0Feb0Mar0Apr0May2Jun2Jul0Aug1Sep0Oct1Nov1Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr0
May2
Jun2
Jul0
Aug1
Sep0
Oct1
Nov1
Dec0

Records for Snohomish County

  • Strongest: Washington tornado13 May 1986, F2, 0.3 miles long
  • Longest path: Washington tornado26 October 1971, F1, 3 miles long
  • Most recent: Washington tornado16 June 2006, F0, 0.5 miles long

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

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