Tail Event
A rare, extreme structural occurrence, such as a 10x or 12x drought, that sits at the far end of the system distribution.
Why It Matters
Tail events define extremity and help calibrate expectations for rare structural outcomes.
How Stepzero Uses It
Stepzero tags tail thresholds and tracks recurrence intervals for extreme drought behavior.
Example
A 12x drought leader can be classified as an active tail event.
Oracle Query Starters
- Show active tail events.
- How often do 10x droughts occur?
- Which era had the largest tail events?