Mason, OH Tornado History — 99 Tornadoes Since 1950
How many tornadoes has Mason, OH had?
Mason has had 99 tornadoes on record within 25 miles since 1950, including 10 strong to violent (EF3+) tornadoes.
When was the most recent tornado near Mason?
The most recent tornado within 25 miles of Mason was an EF0 on April 2, 2025.
When is tornado season in Mason?
May is historically the peak month for tornadoes near Mason, with 25 on record. April through June account for 58 of the 99 tornadoes on record near Mason.
At a Glance
Recent Tornado Activity Near Mason
The last 20 years of confirmed tornadoes within 25 miles — 45 total, averaging 2.3 per year over this window.
Preliminary tornado reports near Mason since December 29, 2025
This is a preliminary report, not confirmed tornadoes. It has not yet been through an NWS damage survey, and is not counted in the confirmed totals above.
Preliminary reports are revised, merged, and sometimes withdrawn — historically about 23% are consolidated downward once surveys complete. Ratings are omitted until a survey assigns one.
Confirmed records above are complete through December 29, 2025. NOAA publishes the confirmed archive annually, so tornadoes after that date appear here first and move into the totals above once finalized.
EF0 tornado confirmed east of New Lebanon in Montgomery County... Ohio. Maximum winds of 75 MPH. This tornado caused tree damage along Snyder Road... with some minor da (ILN)
Within 25 miles of Mason. Quoted text is the report narrative exactly as filed. Source: NOAA Storm Prediction Center preliminary storm reports, updated daily.
What storm spotters reported near Mason
3 local storm reports have been filed within 25 miles of Mason and since confirmed into the NOAA archive, the earliest on April 2, 2025 and the most recent on April 2, 2025. They are already counted in the Mason totals above; quoted below is the narrative each reporting office filed at the time.
NWS damage survey confirmed an EF0 tornado... with maximum estimated winds of 80 mph and length of 2.7 miles. (ILN)
NWS damage survey confirmed an EF0 south of Morrow... Ohio. Estimated max winds of 80 mph... with a path length of 8.7 miles. (ILN)
NWS damage survey confirmed an EF0 tornado from far northern Warren County into southeastern Montgomery County Ohio. Maximum estimated winds of 80 mph with a path lengt (ILN)
Source: National Weather Service and trained-spotter local storm reports, relayed by the NOAA Storm Prediction Center.
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
Casualties on Record Near Mason
53 fatalities have been recorded within 25 miles of Mason since 1950, across 8 events. 1,917 injuries have been reported across all events. 1974 was the deadliest year on record near Mason.
The deadliest single event was an F5 on April 3, 1974, which caused 36 fatalities along a 31.3-mile track.
Notable Tornadoes Near Mason
What the record shows near Mason
The 2020s are the busiest decade on record so far near Mason, with 30 of the 99 confirmed tornadoes within 25 miles. The Mason record runs from the 1950s to today.
Of the tornadoes rated near Mason, 78 reached EF0 or EF1 and 21 reached EF2 or stronger. The most intense on record near Mason is rated EF5, of which 2 are logged.
Across the last 20 years Mason has averaged 2.3 confirmed tornadoes a year within 25 miles, 45 in total. 2024 was the busiest of them with 9, and 8 of those years passed with none at all.