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South Island Detailed Forecast

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The Mountainwatch Detailed Forecast is provided by our resident meteorology sensei "The Grasshopper". The South Island analysis is issued around 7am every morning (maybe later on weekends) and is intended to provide an additional human element to the automated forecast data provided above. Sometimes we won't agree exactly with the model data - but if we ever call something significantly different we'll do our best to explain why.

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6:00am Wednesday 17 September 2014

Conditions Summary:
One or two flurries to clear out today, adding a final touch to the 5 to 15cm picked up over the last couple of days.

Synoptic Outlook:
A few flurries were set to clear out of the Southern Lakes this morning and from Canterbury this afternoon as a weak ridge of high pressure moves in. The next low will be knocking on our door-step by tomorrow afternoon, and that will mean moderate to strong northerlies and the odd light shower of rain during the afternoon. Those showers will then tend to snow flurries on Friday as some cooler air moves in, and as the low crosses the island on Saturday and drags in a southerly we should see full blown snow showers and accumulations of 5 to 10cm.

Image of the day:

One low is leaving, but those other two to the west will merge and repeat the cycle on Thursday/Friday. Source: NZ MetService and BOM (vandalised by the Grasshopper)

Wednesday 17 September:
Mostly Fine southern Lakes. A few flurries clearing to fine for Canterbury.

Thursday 18 September:
Northerlies return with a chance of a late shower of rain.

Friday 19 September:
North-westerlies and one or two snow showers.

Saturday 20 September:
Southerlies and snow showers. 5 to 10cm.

Extended Outlook:
From the weekend we will head into a south-westerly situation, with several small features over the next week. This could see some snow around Q’town, but the main benefit will be the cold temperatures keeping the snow pack in good nick.

That's all from the Grasshopper. Wanna keep your finger on the pulse of all things snow? Join my new weekly email list by filling in the box above. If you have a question or feedback for me hit me up at grasshoppermw@gmail.com, on my facebook page, twitter, or join in the Facebook discussion below.

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