Weather Outlook for The Week – Gails til Thursday

Mar 13, 2018
617 Views

Showers about the coast and long fine spells elsewhere. Showers retreating to Stewart Island in the evening. Westerlies, strong about Foveaux Strait.

strong northwesterlies are expected ahead of the front, with severe gales possible in exposed parts of Canterbury, Otago and Southland on Thursday into the early hours of Friday morning. The strongest winds are expected about the Canterbury High Country, and a Strong Wind Warning is in force for this area.

This Watch is for the possibility of heavy rain spilling over into the headwaters of the Otago lakes and rivers from Thursday evening until overnight Thursday. This Watch also covers the possibility of northwesterlies reaching severe gale in exposed parts of Southland, Otago and the Canterbury Plains including Christchurch and Banks Peninsula from Thursday evening until the early hours of Friday morning.

People are advised to keep up to date with the latest forecasts in case parts of this Watch are upgraded to a full Warning, or other areas are added.

Heavy Rain Watch

Area: The headwaters of the Otago lakes and rivers
Valid: 8 hours from 7:00pm Thursday to 3:00am Friday
Forecast: Rain with heavy falls developing Thursday evening, then easing in the early hours of Friday morning. During this time, rainfall accumulations may approach warning criteria.

Strong Wind Watch

Area: Canterbury Plains including Christchurch and Banks Peninsula
Valid: 12 hours from 9:00pm Thursday to 9:00am Friday
Forecast: From late Thursday evening until Friday morning, northwesterlies may reach severe gale in exposed places at times.

Area: Otago and Southland including Stewart Island
Valid: 12 hours from 5:00pm Thursday to 5:00am Friday
Forecast: From Thursday evening until around dawn Friday, northwesterlies may reach severe gale in exposed places at times.

Image: Metservice

  • Low confidence:a 20% likelihood (or 1 chance in 5) that the event will actually happen.
  • Moderate confidence:a 40% likelihood (or 2 chances in 5) that the event will actually happen.
  • High confidence:a 60% likelihood (or 3 chances in 5) that the event will actually happen.

Source: Metservice

 

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