There is no specific name for such an event. When two different storms meet they usually merge into one storm. A merger of 4 hurricanes is an event that will likely never occur.
Four people singing is often called a quartet.
a quartet?
A quartet
I think you meant 'when' so this question is in the wrong category... But when four musicians play together its called a quartet.!
steroids
Gospels
It's called a Quartet. :D
The numbers being added together are called addends. The answer is called the sum. 4+2=6 Four and two are addends and six is the sum.
Five Hurricanes actually hit the US in 2004, Charley, Frances, Gaston, Ivan and Jeanne. Bonnie was classified as a Tropical Storm when it made landfall, but it still managed to wreak considerable damage.
Quartet.
Gulf States
There were four hurricanes named Lili, in 1984, 1990, 1996, and 2002. There were three hurricanes named Lily in 1967, 1971, and 1975. Lili was used for storms in the Atlantic Ocean; Lily was used for hurricanes in the eastern Pacific Ocean. No hurricanes have been named Lilly by that spelling.