Sudbury, MA Tornado History — 63 Tornadoes Since 1950
How many tornadoes has Sudbury, MA had?
Sudbury has had 63 tornadoes on record within 25 miles since 1950, including 4 strong to violent (EF3+) tornadoes.
When was the most recent tornado near Sudbury?
The most recent tornado within 25 miles of Sudbury was an EF0 on September 6, 2025.
When is tornado season in Sudbury?
July is historically the peak month for tornadoes near Sudbury, with 21 on record. April through June account for 14 of the 63 tornadoes on record near Sudbury.
At a Glance
Recent Tornado Activity Near Sudbury
The last 20 years of confirmed tornadoes within 25 miles — 15 total, averaging 0.8 per year over this window.
What storm spotters reported near Sudbury
2 local storm reports have been filed within 25 miles of Sudbury and since confirmed into the NOAA archive, the earliest on September 6, 2025 and the most recent on September 6, 2025. They are already counted in the Sudbury totals above; quoted below is the narrative each reporting office filed at the time.
AN EF1 TORNADO TOUCHED DOWN IN STOW... MA NEAR MAPLE STREET AND CONTINUED ENE OVER BOSE AVENUE CAUSING SIGNIFICANT TREE DAMAGE. THE TORNADO LIFTED SOMEWHERE NEAR HARVES (BOX)
EF1 TORNADO BRIEFLY TOUCHED DOWN OVER WILLOW BROOK RD IN HOLDEN CAUSING SIGNIFICANT TREE DAMAGE. (BOX)
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 Sudbury
96 fatalities have been recorded within 25 miles of Sudbury since 1950, across 3 events. 1,263 injuries have been reported across all events. 1953 was the deadliest year on record near Sudbury.
The deadliest single event was an F4 on June 9, 1953, which caused 94 fatalities along a 34.9-mile track.
Notable Tornadoes Near Sudbury
What the record shows near Sudbury
The 1950s were the busiest decade near Sudbury, with 16 of the 63 confirmed tornadoes within 25 miles; the 2020s have produced 9 so far. The Sudbury record runs from the 1950s to today.
Of the tornadoes rated near Sudbury, 48 reached EF0 or EF1 and 15 reached EF2 or stronger. The most intense on record near Sudbury is rated EF4, of which 1 is logged.
Across the last 20 years Sudbury has averaged 0.8 confirmed tornadoes a year within 25 miles, 15 in total. 2021 was the busiest of them with 4, and 13 of those years passed with none at all.