King County tornado history
5 tornadoes touched King County, Washington between 1950 and 2025 — about 0.1 a year. The strongest was rated F3 (Dec 12, 1969).
5tornadoes since 1950
F3strongest rating
0killed · 1 injured
5.2 milongest path · 1964
(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5· dots = start point only
By rating
(E)F02
(E)F12
(E)F20
(E)F31
(E)F40
(E)F50
By month
JFMAMJJASOND
Peak month: December.
By decade
’50’60’70’80’90’00’10’20
Strongest tornadoes
| Date | Rating | Path | Width | Injured | Killed |
|---|
| Dec 12, 1969 | F3 | 3.8 mi | 100 yd | 1 | 0 |
| Dec 22, 1971 | F1 | 0.5 mi | 20 yd | 0 | 0 |
| Sep 28, 1962 | F1 | 0.1 mi | 30 yd | 0 | 0 |
| Aug 18, 1964 | F0 | 5.2 mi | 30 yd | 0 | 0 |
| Jun 11, 2001 | F0 | — | — | 0 | 0 |
Most recent tornadoes
| Date | Rating | Path | Width | Injured | Killed |
|---|
| Jun 11, 2001 | F0 | — | — | 0 | 0 |
| Dec 22, 1971 | F1 | 0.5 mi | 20 yd | 0 | 0 |
| Dec 12, 1969 | F3 | 3.8 mi | 100 yd | 1 | 0 |
| Aug 18, 1964 | F0 | 5.2 mi | 30 yd | 0 | 0 |
| Sep 28, 1962 | F1 | 0.1 mi | 30 yd | 0 | 0 |
Nearby counties
Questions
How many tornadoes has King County, Washington had?
5 tornadoes touched King County, Washington between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.1 per year.
What was the strongest tornado in King County?
The strongest rating recorded was F3 on Dec 12, 1969, with a 3.8-mile path.
When is tornado season in King County?
Most of its tornadoes happened in December (2 of 5). Tornadoes can occur in any month, so keep alerts on year-round.
Right now: live tornado warnings map · alerts for your location. Dates link to that day’s full storm reports where available (2004 onward).