Corvallis, OR Tornado History — 10 Tornadoes Since 1950
How many tornadoes has Corvallis, OR had?
Corvallis has had 10 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Corvallis?
The most recent tornado within 25 miles of Corvallis was an Unrated on August 6, 2025.
When is tornado season in Corvallis?
June is historically the peak month for tornadoes near Corvallis, with 4 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 Corvallis
The last 20 years of confirmed tornadoes within 25 miles — 5 total, averaging 0.3 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 Corvallis been fatal?
No fatalities are on record within 25 miles of Corvallis from any of the 10 tornadoes since 1950. NOAA Storm Prediction Center records.
Notable Tornadoes Near Corvallis
About Tornadoes in Corvallis
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.
Corvallis, Oregon has experienced 10 documented tornadoes within a 25-mile radius since record-keeping began in 1950, according to the NOAA Storm Prediction Center. The majority of these events have been weak, with seven rated EF0 on the Enhanced Fujita scale, which measures tornado intensity from EF0 (weakest) to EF5 (strongest). Two tornadoes reached EF1 intensity, while one recent event remains unrated.
Tornado activity in the Corvallis area has been sporadic across the decades. The first recorded event occurred in the 1960s, followed by a gap until the 1990s when three tornadoes were documented. The 2000s also saw three events, while the 2010s recorded one tornado. The current decade has already produced two tornadoes, including the most recent unrated event on August 6, 2025, which traveled just 0.1 miles with a maximum width of 30 yards and caused no damage or injuries.
June stands out as the peak month for tornado activity near Corvallis, accounting for four of the ten recorded events. This aligns with broader patterns in the Pacific Northwest, where late spring and early summer can produce the atmospheric instability necessary for tornadic thunderstorms. The longest-tracked tornado on record occurred on June 4, 2009, traveling 1.5 miles with a maximum width of 150 yards and causing $10,000 in property damage.
The costliest and widest tornado in the area's recorded history occurred on September 29, 2007. This EF0 tornado reached a maximum width of 350 yards and carved a one-mile path, resulting in $20,000 in property damage. Notably, none of the tornadoes documented within 25 miles of Corvallis have resulted in fatalities, reflecting both the generally weak nature of these events and the relatively low population density of affected areas.