List of tornadoes in the United States
This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States from July to September 2021. On average, there are 134 confirmed tornadoes in the United States in July, 83 in August, and 74 in September.
All three months had varying levels of tornadoes that were produced from tropical cyclones. July was near average with 129 tornadoes, with several tornadoes produced by Hurricane Elsa as well as a destructive outbreak at the end of the month. August had 149 tornadoes, the first month to be above average since March. Most of the tornado activity came from the tropics, including moderate to severe outbreaks produced by Tropical Storm Fred and Hurricane Ida, the latter of which continued into September. The rest of September, however, saw only isolated tornado activity and was significantly below average with only 28 tornadoes.
July.
July 7 event.
"Events were associated with Hurricane Elsa."
July 8 event.
"Event in the Southeastern United States was associated with Hurricane Elsa."
July 9 event.
"Events were associated with Hurricane Elsa."
August.
August 17 event.
"Events were associated with Tropical Storm Fred."
August 18 event.
"Event was associated with Tropical Storm Fred."
August 19 event.
"Events in the Northeast were associated with Tropical Storm Fred."
August 23 event.
"Event was associated with Hurricane Henri."
September.
September 2 event.
"Event in Massachusetts was associated with Hurricane Ida."
September 8 event.
"Event in Florida was associated with Tropical Storm Mindy."
Notes.
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References.
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