Low pressure brings rain, wind and more for the weekend

May 19, 2016

A weekend of unsettled weather lies ahead as a low pressure system moves up the country bringing periods of heavy rain, strong winds and cooler temperatures.

A southwest flow breaks down today as a low pressure system approaches the far south from the Tasman. The low stalls southwest of Fiordland tomorrow and spreads a front, with heavy rain and thunderstorms in the west, across the South Island in the morning and the North Island from the afternoon.

“On Saturday the low moves over Auckland in the evening followed by a strong south to southwest wind flow,” explained MetService Meteorologist Ciaran Doolin. “Heavy rain and further squally thunderstorms are possible in central and northern areas of the North Island Saturday evening. Meanwhile, western coastal areas of the North Island are likely to be affected by a large southwest swell during this period.”

The low moves east of the North Island on Sunday, easing the winds over the central and northern North Island.  However, severe southwest gales and a large southerly swell are expected along eastern coasts of the North and South Islands, persisting into Monday.

“On the upside, the South Island ski fields are in for a dusting of snow during the weekend, especially the Canterbury fields,” Doolin added.

Official Severe Weather Watches and Warnings are reviewed and re-issued by MetService at least every twelve hours, and more often if necessary. To get the most up to date information on severe weather around the country, or any other forecasts, see metservice.com or on mobile devices at m.metservice.com. You can also follow our updates on MetService TV, at MetService New Zealand on Facebook, @metservice and @MetServiceWARN on Twitter and at blog.metservice.com 

 

MetService issues Warnings, Watches and Outlooks for severe weather over New Zealand.

Warnings are about taking action when severe weather is imminent or is occurring. They are issued only when required.
Recommendation: ACT 

Watches are about being alert when severe weather is possible, but not sufficiently imminent or certain for a Warning to be issued. They are issued only when required.
Recommendation: BE READY 

Outlooks are about looking ahead, providing advance information on possible future Watches and/or Warnings. They are issued routinely once or twice a day.
Recommendation: PLAN 

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