A weak area of low pressure in the eastern Tasman Sea will fall apart today but lend a helping hand to creating afternoon downpours and thunderstorms in the North Island’s interior and some more wet weather in the west.

The leftovers of this weak low, along with a humid northerly flow on Saturday, will see further chances of afternoon downpours through the North Island, some with thunder.

A bit more rain will return to Greymouth, but not at the levels seen yesterday.

The Main Highlights:

• The low can not move eastward, because the high pressure in the South Pacific Ocean will gradually be stronger. The low will fall apart today.
• This set up is the reason why eastern areas remain fairly dry.
• Onshore breeze around the high will produce thunderstorms over the mountains of the North island by tomorrow.
• There will be risks of localized heavy rain and lightning.
• The stronger high, however, may bring dry weather in most areas tomorrow and Sunday.
• This unsettled pattern continues next week – the next low with unstable air is expected to approach New Zealand early next week.

– Maps by The Weather Company (an IBM business)
– WeatherWatch.co.nz (an official IBM business partner)