The main ones appear to be: 1) Lack of early/late season hurr. forming in the W. Carib/GOM, which tend to be short-lived and generate less ACE than Cabo Verde-type hurr. 2) Limited baroclinic-origin hurr. (forming in subtropics), which also usually produce relatively little ACE

— Yaakov Cantor (@yconsor) August 7, 2023