Activity is measured in accumulated cyclone energy (ACE). If a storm is active across two distinct months, I’ll do my best to estimate the breakdown of ACE into the two months. I may ask Claude Opus 4.7 for assistance in resolving the question if needed.

Source for resolution: https://tropical.atmos.colostate.edu/Realtime/index.php?loc=northatlantic

In the unlikely case of a tie, I will use the number of storms in a month. In case of an even unlikelier subsequent tie, I will use the number of active days in a month. I am confident no further ties are likely.