Maple Valley, WA Tornado History — 9 Tornadoes Since 1950
How many tornadoes has Maple Valley, WA had?
Maple Valley has had 9 tornadoes on record within 25 miles since 1950, including 1 violent (EF3+) tornado.
When was the most recent tornado near Maple Valley?
The most recent tornado within 25 miles of Maple Valley was an EF1 on September 6, 2009.
When is tornado season in Maple Valley?
June is historically the peak month for tornadoes near Maple Valley, with 3 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
Recent Tornado Activity Near Maple Valley
The last 20 years of confirmed tornadoes within 25 miles — 1 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 Maple Valley been fatal?
No fatalities are on record within 25 miles of Maple Valley from any of the 9 tornadoes since 1950, though 1 injuries have been reported. NOAA Storm Prediction Center records.
Notable Tornadoes Near Maple Valley
About Tornadoes in Maple Valley
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.
Maple Valley, Washington, has experienced nine tornadoes within a 25-mile radius since 1950, according to the NOAA Storm Prediction Center. This relatively modest total reflects the Pacific Northwest's generally lower tornado frequency compared to regions farther east, though the area is not immune to severe convective weather capable of producing tornadoes.
The majority of recorded tornadoes in the area have been rated EF1 on the Enhanced Fujita scale, which measures tornado intensity based on damage. Six of the nine events fell into this category, with two rated EF0 and one notable exception: an F3 tornado that struck on December 12, 1969. This December 1969 event remains the costliest on record for the area, causing $275,000 in property damage along a 3.8-mile path with a maximum width of 100 yards. Despite its intensity, no fatalities were recorded. In fact, none of the tornadoes documented near Maple Valley have resulted in deaths.
Tornado activity near Maple Valley has been sporadic across the decades. The 1960s saw three events, the 1970s recorded two, and both the 1990s and 2000s each documented two tornadoes. June has been the most active month historically, accounting for three of the nine tornadoes. The most recent tornado occurred on September 6, 2009, an EF1 event that traveled 9.6 miles with a maximum width of 170 yards and caused $180,000 in property damage. This same tornado also holds the record as the longest-tracked tornado in the area's recorded history.
The widest tornado on record was an F1 that occurred on June 28, 2001, reaching a maximum width of 400 yards along a 2.3-mile path, though it caused no reported property damage. While tornadoes are less common in western Washington than in many other parts of the United States, the historical record demonstrates that residents should remain aware of severe weather potential, particularly during the spring and early summer months when atmospheric conditions can occasionally support tornadic development.