Winter to tighten its grip

July 17, 2014

The cold southerly flow, which has chilled the country for the last few days, bringing clear skies for many western areas, but exposing eastern areas to rather volatile shower activity, weakens today as a narrow ridge of high pressure spreads over the South Island. With New Zealand sandwiched between two areas of low pressure, an unsettled weekend follows, with rain or showers at some point for most places.

An area of low pressure will cross the upper North Island during the weekend. A burst of heavier rain is expected about Auckland and Coromandel during Saturday, and Gisborne, parts of the Bay of Plenty and the Kaimai Range on Sunday.

“Although accumulations are likely to be below the usual warning criteria for Northland, forecasters are conscious that any rainfall in this area is going to pose problems. For this reason, a rain warning may be issued for Northland for this coming Saturday, “commented meteorologist Liz Walsh.

Elsewhere, the cold southerlies rekindle and sweep showers through Canterbury from tomorrow, falling as snow above 500 metres. More widespread areas of rain or showers spread over the South Island during Saturday and the North Island into Sunday.

“Typically, from now until mid-August, we are entering the coldest time of the year, so watch out for snow to low levels, especially later in the weekend for our most southern regions,” Walsh went on to say. 

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:
John Law 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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