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Warming winds ahead of weekend rain band

Continuing settled weather will cap off the working week, then MetService is forecasting rain to move swiftly northwards up the country for the last weekend of meteorological summer.

A couple of crisp mornings this week remind us that autumn is just around the corner. Temperatures are on an increasing trend due to a northerly wind flow as the high pressure over the country starts shifting eastwards. This high pressure keeps our weather dry, aside from brief showers here and there for parts of the North Island, until a front arrives on Friday night down south.

As this front moves northwards on Saturday, it will bring a burst of rain to the West Coast (heavier and more persistent in the ranges) while warm northwesterlies blow across the Southern Alps into Canterbury and Otago. Heavy Rain Watches have been issued for much of the West Coast, as well as a Strong Wind Watch for the Canterbury High Country.

These warm dry winds in Canterbury on Saturday will pump temperatures into the high twenties.

MetService meteorologist Dan Corrigan recommends, “Make sure to follow the latest advice from Fire and Emergency NZ and check it’s alright before you light a fire at checkitsalright.nz. There will likely be a light sprinkling of rain in Canterbury on Saturday evening, but it won’t be enough to alleviate the dry conditions there.”

Saturday will also be a warm one for the North Island, then rain arrives overnight as conditions clear up further south. While temperatures return to normal down south, North Islanders will be tossing aside their blankets with warm overnight temperatures not dipping below the high teens.

The wet weather then continues northwards on Sunday, bringing welcome rain to many areas that have had a very dry month so far.

Corrigan explains, “Monday is also likely to bring more rain to the upper North Island, but it is still some time away so the finer details of where, when, and how much are yet to be locked in. Keep an eye on metservice.com or our mobile app to stay up with the latest updates.”

For media enquiries or to arrange an interview with one of our meteorologists please call 04 4700 848 or email metcomms@metservice.com

Understanding MetService Severe Weather Warning System

Severe Thunderstorm Warnings (Localised Red Warning) – take cover now:

  • This warning is a red warning for a localised area.
  • When extremely severe weather is occurring or will do within the hour.
  • Severe thunderstorms have the ability to have significant impacts for an area indicated in the warning.
  • In the event of a Severe Thunderstorm Red Warning: Act now!

Red Warnings are about taking immediate action:

  • When extremely severe weather is imminent or is occurring
  • Issued when an event is expected to be among the worst that we get – it will have significant impact and it is possible that a lot of people will be affected
  • In the event of a Red Warning: Act now!

Orange Warnings are about taking action:

  • When severe weather is imminent or is occurring
  • Typically issued 1 – 3 days in advance of potential severe weather
  • In the event of an Orange Warning: Take action.

Thunderstorm Watch means thunderstorms are possible, be alert and consider action

  • Show the area that thunderstorms are most likely to occur during the validity period.
  • Although thunderstorms are often localised, the whole area is on watch as it is difficult to know exactly where the severe thunderstorm will occur within the mapped area.
  • During a thunderstorm Watch: Stay alert and take action if necessary.

Watches are about being alert:

  • When severe weather is possible, but not sufficiently imminent or certain for a warning to be issued
  • Typically issued 1 – 3 days in advance of potential severe weather.
  • During a Watch: Stay alert

Outlooks are about looking ahead:

  • To provide advanced information on possible future Watches and/or Warnings
  • Issued routinely once or twice a day
  • Recommendation: Plan

To get the most up to date information on severe weather around the country, or any other forecasts, see metservice.com or download the MetService mobile app

 

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