Tornado: Largest Tornado Outbreak

Tornado: Largest Tornado Outbreak

Record Value 209 tornadoes in a 24-hour period
Date of Event 27/4/2011
Length of Record 1787-present
Geospatial Location Southeastern United States


US NOAA's Storm Data


The official National Oceanic and Atmospheric Administration Storm Data for 27 April 2011 (CST) list tornado numbers:

  • F0: 62
  • F1: 77
  • F2: 33
  • F3: 20
  • F4: 11
  • F5: 4

Total tornadoes for calendar day: 209

In addition, the month of April 2011 also set an record high for the number of US tornadoes for a given month at 760.