Where is Summer?

December 12, 2016

A large high over the north Tasman Sea directs a southwesterly flow over the country to start the week. This southwest flow brings showers and slightly cooler temperatures.

On Tuesday, the west coast of the South Island can expect rain to develop and stick around through Wednesday, becoming heavy at times (meaning accumulations could reach warning criteria of 100mm in 24 hours). For more information on the Warning criteria there is a blog at http://blog.metservice.com/OutlookWatchWarning.

“We can expect strong northwesterly winds for the east of the South Island on Wednesday and Thursday, travelling north to affect the lower North Island into Friday,” said Meteorologist Lisa Murray. “With the northwest winds, temperatures in the east are expected to become warm on Wednesday reaching the mid-twenties.  Napier and Hastings are forecast to reach a smouldering 30C on Thursday,” she said.

Severe northwesterly gales are expected in some of the eastern areas, while rain is expected in the west. “With a number of weather factors to consider, it’d be wise to check the latest forecast for your location at MetService.com before you make your plans for the week,” advises Ms Murray.


Later in the week, the southwesterly flow over the country returns bringing large, long period swell to the west of the country before another front lines up for the second half of the weekend.

Meanwhile in the Tropics, MetService is monitoring the development of a low near Fiji. You can check the latest tropical cyclone activity update on the MetService website at http://www.metservice.com/warnings/tropical-cyclone-activity

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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