On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

TCO_Fig4

Figure 4: Early season (November to January) and late season (February to April) anomaly plots for selected TC analogue seasons (data courtesy of International Best Tracks Archive for Climate Stewardship (IBTRACS). The year label notes the first month in the analogue year selection (i.e. for the early TC season “1969” = November 1969, December 1969, January 1970; and for the late TC season “1969” = February – April 1970).