Archive for June, 2012

A fast mover

June 25, 2012

New Zealand has been in the grip of westerlies for the last fortnight or so.”We’ve had several decent wind and rain events over the last couple of weeks,” commented MetService Media and Communications Meteorologist Dan Corbett, “and there’s at least one more to come.”

“Overnight Monday, a low is expected to pass from the south Tasman Sea across the area to the south of the South Island,” said Corbett. “This low is moving really fast and deepening quickly as it approaches southern New Zealand. It’s expected to bring a period of strong winds to parts of the country as it passes by.”

Southern parts of Fiordland, Southland and in particular Stewart Island are the places most likely to be exposed to damaging westerly winds. “MetService has issued a Severe Weather Warning for this. We’re looking at gusts of 150 km/h in the period between midnight Monday and 6am Tuesday. Gusts of this strength can blow roofs off houses, bring down power lines, break large branches off trees and blow vehicles off roads,” said Corbett.

Snow will also drop to lower levels across southern parts of the South Island as colder air spreads in behind the weather system. Other parts of southern and central New Zealand are likely to be windy as well. Severe gale northwesterlies may also affect inland Canterbury and Marlborough overnight Monday to Tuesday and about Wellington and the Wairarapa Tuesday morning.

Keep up to date with the latest watches and warnings at or for mobile devices at You can also follow our updates @MetService on Twitter or watch the latest severe weather videos on MetService TV.

For further information please contact:
Daniel Corbett (04) 4700-754 Media and Communications Meteorologist MetService

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