Tropical Storm Zeta formed in the Atlantic on 30 December 2005 and almost became a hurricane on 2 January 2006. When Zeta finally dissipated on January 6th, it ended the most active Atlantic hurricane season in recorded history, and also one of the most destructive: category-5 hurricanes Emily, Katrina, Rita, and Wilma caused incredible damage and loss of life throughout the US. The season also included three unnamed tropical depressions and an unnamed tropical storm.
That season, Tropical Storm Alpha formed on October 22nd, and Hurricane Beta formed on October 26th.
Flash forward 15 years, and it looks like we're going to break a few of 2005's records. This year, storms Alpha and Beta both formed on September 18th. So far only Hurricanes Laura and Teddy—the latter now about to pound Nova Scotia and Newfoundland—got up to category 4, and we haven't yet had any category 5 storms. But the season shows no sign of winding down.
We have known for decades that climate change would cause more frequent tropical storm activity. Welcome to the future.