Mercer Island, WA Tornado History — 10 Tornadoes Since 1950
How many tornadoes has Mercer Island, WA had?
Mercer Island has had 10 tornadoes on record within 25 miles since 1950, including 1 strong to violent (EF3+) tornado.
When was the most recent tornado near Mercer Island?
The most recent tornado within 25 miles of Mercer Island was an EF2 on December 18, 2018.
When is tornado season in Mercer Island?
December is historically the peak month for tornadoes near Mercer Island, with 3 on record. April through June account for 3 of the 10 tornadoes on record near Mercer Island.
At a Glance
Recent Tornado Activity Near Mercer Island
The last 20 years of confirmed tornadoes within 25 miles — 2 total, averaging 0.1 per year over this window.
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 Mercer Island been fatal?
No fatalities are on record within 25 miles of Mercer Island from any of the 10 tornadoes since 1950, though 1 injuries have been reported, according to NOAA Storm Prediction Center records.
Notable Tornadoes Near Mercer Island
What the record shows near Mercer Island
The 1960s were the busiest decade near Mercer Island, with 3 of the 10 confirmed tornadoes within 25 miles; the 2010s have produced 2 so far. The Mercer Island record runs from the 1960s to today.
Of the tornadoes rated near Mercer Island, 8 reached EF0 or EF1 and 2 reached EF2 or stronger. The most intense on record near Mercer Island is rated EF3, of which 1 is logged.
Across the last 20 years Mercer Island has averaged 0.1 confirmed tornadoes a year within 25 miles, 2 in total. 2015 was the busiest of them with 1, and 18 of those years passed with none at all.