A weird lack of Northern Hemisphere tropical cyclones so far in 2025 » Yale Climate Connections

‘A weird lack of Northern Hemisphere tropical cyclones so far in 2025 It’s been one of the least active years on record for tropical cyclones in the Northern Hemisphere’

The graph shows Northern Hemisphere ACE for each year from January 1 through July 21, starting with 1971, the first year of reliable data from the Northeast Pacific. The ACE to date of 45.5 is only about 41% of the climatological average for the period 1991-2020. The only years with lower ACE at this point were 1977 (23.0) and 1998 (39.1). ... The cumulative longevity of each named storm (or “named storm days” in the table below) is only about t…

A weird lack of Northern Hemisphere tropical cyclones so far in 2025 » Yale Climate Connections

It’s been one of the least active years on record for tropical cyclones in the Northern Hemisphere. That could change soon. The post A weird lack of Northern Hemisphere tropical cyclones so far in 2025 appeared first on Yale Climate Connections.