A messy area of low pressure stuck between two powerful highs will produce pockets of severe weather around NZ this week.

For Tuesday, sub-tropical northerly quarter winds feed down over most of the South Island and increasingly into the North Island as the powerful high tracks further east. This allows the wet weather to set in to the West Coast and allows low pressure to form further west out over the Tasman Sea (moving in for Thursday and Friday). A few showers in the north of the country otherwise dry.

Heaviest rain is on the West Coast – mostly the southern half. You’ll find more detail in the MetService warning maps AND by using our local hourly rainfall data. If you have our new alerting app this event is a good one for testing rain alerts. More details on our app here.

On Wednesday – similar weather continues with rain heavy on the West Coast south of about Hokitika and down towards Fiordland. Westland is most exposed.

Our latest weather video today will take an even closer look at expected rainfall totals this week and which areas may miss out.

Low pressure in the Tasman Sea is developing and deepening.

🟠🇳🇿On the #NZ side we have the warm northerly flow (as high pressure departs).

🔵🇦🇺On the #Australia side they the southerly flow (ahead of the next high pressure zone moving in).

12:30pm NZST
10:30am AEST pic.twitter.com/sEtBWJXt4J

— WeatherWatch.co.nz (@WeatherWatchNZ) April 9, 2024

🌀🌀🌀It's 15 days out (so more in the 'entertainment' category than anything else), but looks like tropical energy is redeveloping north of New Zealand.

As we often see with long range tropical forecasts these cyclones may not form, but today's modelling is showing 3!

(GFS) pic.twitter.com/tGi3XrKOQg

— WeatherWatch.co.nz (@WeatherWatchNZ) April 9, 2024

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Weather Maps you might find helpful today are …

• Cumulative Rainfall next 7 days
• MetService Severe Weather Warnings & Watches
• Wind Maps

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• WeatherWatch.co.nz / New Alerting App