Tasman Tempest: The worst has passed

The worst of the Tasman Tempest's rains are now behind us, and the clean-up in flooded areas of the country begins.

Central New Zealand could see the worst of Monday's weather, with MetService warning of a few thunderstorms around Hawke's Bay in the afternoon and evening. The worst of the storms are expected from Wairoa to Waipukurau, with a low risk of thunderstorms in the wider Hawke's Bay and southern parts of Gisborne.

Police are warning the public to drive carefully, as there may be debris on the roads. Any unnecessary travel between Tikitiki and Hicks Bay should be avoided entirely.

The Ministry of Education says some schools in flooded areas will be closed on Monday. Parents are advised to check their school's or early childhood service's website or Facebook page for the latest information.

Homes, shops and cars were inundated in Auckland's New Lynn (Newshub)
Homes, shops and cars were inundated in Auckland's New Lynn (Newshub)

The Auckland clean-up continues

Residents and businesses will continue a big clean-up today after flash flooding inundated buildings in New Lynn, Titirangi and Kelston.

In west Auckland alone, 240 people were displaced due to the flooding.

Great North Road, the main route running through New Lynn, was re-opened last night after it was flooded when a nearby stream overflowed.

Auckland Council is calling on Aucklanders to check in with neighbours, make sure buildings are safe and to drive to the conditions.

Engineers have been assessing buildings in flood-hit areas, and will continue checks on a block of evacuated flats in Kelston on Monday.

Auckland Mayor Phil Goff is calling for an investigation into the flooding to be launched.

"The immediate thing is to focus on getting through the couple of weeks ahead of us, trying to keep our water consumption down, trying to avoid a situation where a boil water order may be needed."

Mr Goff says measures must be taken to prevent any repeats in the future.

"With climate change, we are going to see these extreme events more frequently. We have to plan for a different future, and we have to put in place the safeguards that we're able to financially, and the ones that make sense."

Auckland's water treatment plants are dealing with siltation levels 100 times higher than usual.

Mr Goff told Newshub a permanent forestation programme could help prevent run-off into the dams.