ACE stripes: one stripe per season
in context
calendar year to dateCumulative ACE: every year since 1966
Closest analog years
Where storms go
The season clock
Average ACE per day, around the calendar
Chance a storm is active on each date
Month by month
every season since 1966ACE by month and season
The average season, month by month
formations per seasonSeason by season
colored by ENSO phaseThe ENSO fingerprint
The average season, by ENSO phase
ONI vs. season ACE
Season length
first → last named-storm formationWhen each season started and ended
How storms have changed
decade by decadeLifetime peak intensity: 1966–95 vs. 1996–2025
share of named stormsRead long-term changes with care: intensity estimates before routine geostationary satellite coverage and the Dvorak technique (widespread by the 1980s), aircraft reconnaissance changes, and JTWC/NHC reanalyses all affect early records, especially peak winds and short-lived storms in the Indian Ocean and Southern Hemisphere. Latitudes are distance from the equator.