Questions are being raised as to why competing weather forecasters NIWA and MetService don't work together in times of extreme weather events.

MetService has recently concluded its weather forecasting models performed badly before the Auckland floods, leaving staff in disbelief over the inaccuracy.

WeatherWatch Head Analyst Philip Duncan says the situation wouldn't have gone this far if the Government hadn't allowed NIWA to commercialise everything.

"MetService would have a lot more access to tax-funded modelling and be able to improve it, because climate change- or even the fact that things are warming up- is breaking some of the modelling."

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