What is the largest known outbreak of tropical cyclone tornadoes?
2004’s Hurricane Ivan caused an outbreak of 117 tornadoes – with the bulk of the tornadoes on 17 September – which developed over a 3 day period in the United States, including 37 in Virginia, 25 in Georgia, 18 in Florida, 9 in Pennsylvania, 8 in Alabama, 7 in South Carolina, 4 in both Maryland and North Carolina, 3 in West Virginia, and 2 in Maryland. There were 26 tornadoes reported on 15 September, 32 tornadoes on 16 September, 57 tornadoes on 17 September, and 2 tornadoes (in Maryland) on 18 September. At least 8 people were killed and 17 injured by the tornadoes. The previous record was during Hurricane Beulah, which spawned a reported 115 tornadoes in southeast Texas during the first several days after its landfall in September 1967 (Orton 1970). These outbreaks of tornadoes from Ivan and Beulah represent two of the largest tornado outbreaks of any kind in the U. S. tornado climatology. It is difficult to predict which tropical cyclones will produce large tornado outbreaks, altho