City of Sammamish, WA Tornado History — 7 Tornadoes Since 1950
How many tornadoes has City of Sammamish, WA had?
City of Sammamish has had 7 tornadoes on record within 25 miles since 1950, including 1 violent (EF3+) tornado.
When was the most recent tornado near City of Sammamish?
The most recent tornado within 25 miles of City of Sammamish was a F0 on June 16, 2006.
When is tornado season in City of Sammamish?
June is historically the peak month for tornadoes near City of Sammamish, with 2 on record. Spring through early summer (April–June) generally sees the highest activity across most of the central and southern United States.
At a Glance
Tornadoes by Decade
Tornadoes by Enhanced Fujita Rating
F0–F5 ratings (pre-2007) are grouped with their EF equivalents. The Enhanced Fujita scale replaced the original Fujita scale in February 2007.
Tornadoes by Month
Have any tornadoes near City of Sammamish been fatal?
No fatalities are on record within 25 miles of City of Sammamish from any of the 7 tornadoes since 1950, though 1 injuries have been reported. NOAA Storm Prediction Center records.
Notable Tornadoes Near City of Sammamish
About Tornadoes in City of Sammamish
This overview was written April 23, 2026. The tornado counts and notable-event figures elsewhere on this page reflect the latest data and may differ from this summary.
The City of Sammamish, Washington, located in the Pacific Northwest, experiences tornadoes far less frequently than regions in the central United States. According to the NOAA Storm Prediction Center, seven tornadoes have been recorded within 25 miles of Sammamish since 1950, making tornado activity in this area relatively rare. The majority of these events have been weak, with four rated EF0 and two rated EF1 on the Enhanced Fujita scale, which measures tornado intensity based on damage.
The most significant tornado on record occurred on December 12, 1969, when an F3 tornado carved a 3.8-mile path with a maximum width of 100 yards. This event caused $275,000 in property damage but resulted in no fatalities. The unusual December timing of this strongest tornado contrasts with the more typical pattern seen elsewhere in the country, where tornadoes most commonly occur during spring and early summer months. The longest-tracked tornado near Sammamish was an F0 event on August 18, 1964, which traveled 5.2 miles with a maximum width of 30 yards and caused no damage or injuries.
Tornado activity near Sammamish has been sporadic across the decades. Three tornadoes were recorded in the 1960s, one in the 1970s, one in the 1990s, and two in the 2000s. June has been the peak month for tornado occurrence with two events, though tornadoes have been documented in other months as well, including the notable December event. The most recent tornado on record touched down on June 16, 2006, as an F0 with a brief half-mile path and 50-yard width, causing no damage or casualties.
None of the tornadoes recorded near Sammamish have resulted in fatalities. This safety record reflects both the generally weak nature of tornadoes in the Pacific Northwest and the region's lower population density during earlier decades when most of these events occurred. While tornadoes remain possible in western Washington, they are uncommon compared to other parts of the nation, and residents should still be aware of severe weather warnings when atmospheric conditions become favorable for tornado development.