Wednesday morning update. It's official, Humberto has tied Gustav for the latest first hurricane of the season.
The record for the latest development of the first Atlantic hurricane of the season is Gustav in 2002 which formed September 11th.
This year Humberto is challenging that record. It currently is moving west of the Cape Verde islands in the east Atlantic far away from anything, still classified as a tropical storm. Most experts see Humberto gaining hurricane characteristics within 24 hours.
Regardless, the season has been/is really slow to start with the ACE (accumulated cyclone energy) at 20% of average.