Impact-based severe weather warnings for Aotearoa New Zealand

Impact-based weather warnings are a new type of warning system that communicates what the weather will DO (e.g. disrupt traffic, take out power) along with what the weather will BE (e.g. wind speed, rainfall intensity). They can add meaning to the warnings and enable the public to make appropriate decisions to protect themselves.

Where is the data needed to produce impact-based warnings, and how can we access it? What are the challenges and benefits of impact-based warning systems, and how effective are they at prompting the public to take action?