A cold week to come

May 24, 2013

A fleeting ridge of high pressure will bring a mostly dry start to the weekend. However, a low from the North Tasman Sea and an active front from the Southern Ocean are expected to bring rain, and eventually much colder conditions, to much of the country.

Media and Communications Meteorologist Daniel Corbett commented “The weekend will end on a wet note and usher in a real taste of winter for early next week. Extra jumpers will need to be on hand.”

The low from the Tasman Sea will be a good source of moisture from the sub-tropics so heavy rain can be expected over the northern half of the North Island during Saturday night and early Sunday, accompanied by strong winds. There is an outside chance of these strong onshore winds and heavy rain coinciding with exceptionally high tides.

This low will slip away quickly to the east on Sunday. Another feature,an active front, will slide up the South Island during Sunday bringing strengthening northerlies and outbreaks of rain, heavy for a time along the West Coast.

On Sunday and Monday a very cold southwesterly flow is expected to spread across New Zealand, bringing snow, to near sea level in the far south, by the start of the working week and hard overnight frosts to some areas. Additionally, heavy southwest swells are expected along western coasts from about Monday for a few days.

Keep up to date with the latest forecasts and any watches/warnings at metservice.com or on mobile devices at m.metservice.com. You can also follow our updates on MetService TV, @metservice on Twitter and at blog.metservice.com.

For further information please contact:
Daniel Corbett Media and Communications Meteorologist (04)4700 754
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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
* 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
* Issued only when required
* Recommendation: BE READY
Outlooks are about looking ahead:
* To provide advance information on possible future Watches and/or Warnings
* Issued routinely once or twice a day
* Recommendation: PLAN
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