Hermiston, OR Tornado History — 7 Tornadoes Since 1950
How many tornadoes has Hermiston, OR had?
Hermiston has had 7 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Hermiston?
The most recent tornado within 25 miles of Hermiston was an Unrated on June 11, 2022.
When is tornado season in Hermiston?
May is historically the peak month for tornadoes near Hermiston, 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 Hermiston
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 Hermiston been fatal?
No fatalities are on record within 25 miles of Hermiston from any of the 7 tornadoes since 1950. NOAA Storm Prediction Center records.
Notable Tornadoes Near Hermiston
About Tornadoes in Hermiston
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.
Hermiston, Oregon has experienced 7 documented tornadoes within a 25-mile radius since 1950, according to the NOAA Storm Prediction Center. The majority of these events have been weak, with 4 rated EF0 and only 1 reaching EF1 intensity. One tornado reached EF2 strength, while the most recent event in 2022 remains unrated. Notably, none of these tornadoes have resulted in any fatalities.
Tornado activity in the Hermiston area has been sporadic across the decades. Two tornadoes occurred during the 1950s, followed by a quiet period until a single event in the 1990s. The 2000s saw the highest concentration with 3 tornadoes, and one additional tornado has been recorded in the 2020s. May stands out as the peak month for tornado occurrence, accounting for 3 of the 7 total events. This spring peak aligns with broader national patterns, when atmospheric conditions most favor the development of severe thunderstorms capable of producing tornadoes.
The costliest tornado on record struck on June 27, 1958, rated F2 on the Fujita scale. This event caused $27,500 in property damage, traveled 0.3 miles, and reached a maximum width of 50 yards, though it caused no fatalities. The longest and widest tornado occurred on May 9, 1956, an F0-rated event that traveled 10.2 miles with a maximum width of 80 yards but caused no property damage or injuries. The most recent tornado touched down on June 11, 2022, remaining unrated with a maximum width of just 15 yards and no recorded path length or damage.
The Enhanced Fujita scale, which replaced the original Fujita scale in 2007, rates tornadoes from EF0 to EF5 based on estimated wind speeds and observed damage to structures and vegetation. The predominance of EF0 and EF1 tornadoes in the Hermiston area reflects the relatively weak nature of most events in this region, with wind speeds typically remaining below 110 miles per hour.