Big changes could be on the cards for New Zealand's weather forecasting system.

The Government's commissioned a review to begin in September, with a final report due in February.

It follows increased bad blood between the two agencies- most recently, MetService alleging NIWA's forecasts may be harmful to public safety when used by DOC.

State Owned Enterprises Minister, Duncan Webb says they have different but overlapping roles, and the goal is to get the best from both.

"So that not only can we kind of predict and forecast weather, we can get that climate change stuff, which is NIWA's speciality." 

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