November 30th marks the last day of the Atlantic Hurricane Season.
The 2018 season was above average producing 15 named storms, 8 hurricanes - two of which were classified as major hurricanes (category 3, 4, 5). An average hurricane season usually has 12 named storms.
The season will be remembered most for the destruction caused by Florence and Michael to the Southeastern United States. These names will likely be retired, but that decision will not be finalized until Spring 2019.
This is the first season since 2008 to have 4 named storms at the same time (Florence, Helene, Isaac & Joyce).