SWINGS AND ROUNDABOUTS

September 2, 2010

MetService anticipates strong wind swings and intense temperature turnarounds over the next few days.

On Friday, a brief but wintry southerly change is expected to sweep across the country, accompanied by squalls and hail.  A Special Weather Advisory has been issued for snow briefly settling down to 200 metres in Southland and Otago by dawn, down to 300 metres in Canterbury during the morning, and down to around 400 metres in the southeastern North Island in the afternoon. Road Snowfall Warnings have been issued for many alpine roads.

Saturday is likely to be a transition day with winds relaxing and cloud clearing in most places.

On Sunday (Fathers Day), a quick turnaround to a mild and very strong northwesterly is expected.  Northwest gales may become severe in eastern parts of both main islands and around central New Zealand.  Heavy rain is likely about and west of the Southern Alps on Sunday, and possibly over the southwest of the North Island on Monday.

To complete the roundabout, another southerly should work its way over the South Island late on Sunday and during Monday – this one is not likely to be as cold as the Friday southerly.

These swinging weather conditions are likely to make driving conditions challenging, and bring periods of stress to vulnerable farm animals during lambing.  Farmers and travelers should keep up to date with the latest weather information.  Updates are always available on metservice.com and, for mobiles, on m.metservice.com .

For further information please contact:
Bob McDavitt       Weather Ambassador           (09)377 4831

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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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(C) Copyright Meteorological Service of New Zealand Ltd 2010

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