Weather Forecast (as reported by Météo-France Savoie on 9th April 2014) for Savoie and the N French Alps
A high pressure weather system is in place over the N French Alps bringing settled mild, sunny weather to our area.
Wednesday 9th: Tonight: Clear skies. Light refreeze at high altitude with temperatures: -2° at 2000 m, -3° at 3000 m.
Thursday 10th: Sunny and mild. +20° in valley bottoms and 0° at 3000 m with moderate N to NW wind (10 – 30 km/hr).
Friday 11th: Very sunny and mild. Cloudy spells overnight, possibly bringing a few light showers. 0° at 2800 m.
Saturday 12th: Bright with some cumulus clouds at high altitude. Slightly cooler, 0° at 2500 m.
Sunday 13th & Monday 14th: Sunny and very mild.
Tuesday 15th & Wednesday 16th: NW weather system coming in from the Atlantic. Cloudy spells, possibly bringing some rain. Temperatures slightly down on previous days.
There’s spring skiing off piste in the Northern French Alps and a large part of the entire Alps. Here are some ideas about how to have fun and be safe on spring snow! But first, here’s this week’s weather forecast.. (video below is from last season 2013, but still very relevant to the subject!)
Understand ‘melt-freeze cycles’ and have fun with spring snow!
Off-piste spring snow is one of the best things that the Northern French Alps has to offer. With lift access to all slope orientations: east, south, west and then north, you can find it and have fun with little effort.
Once new snow melts in the sun/heat during the day and then freezes at night (1 melt-freeze cycle) a few times in succession after a snowfall, the top snow layer begins to form a crust that gets deeper and stronger after each melt allows free water to drip down and re-freeze during the night. Any given ‘melt-freeze’ layer becomes stronger with each cycle of melting and freezing due to the deeper penetration of each melt during the day, which then adds more depth to the potential frozen layer at night.
If untouched, the top of this frozen layer is smooth and solid first thing in the morning, then it becomes progressively softer as the warm sun and increased temperatures melt it as the day goes by. This process starts on east faces because they get the sun first thing in the morning, then south, then west (north faces at 2500 metres don’t normally get a melt freeze layer on them until late April due to lack of sun).
For good skiing!
The trick is, after a couple of good melt-freeze cycles have created a solid layer on a slope, you need to get on that slope when the snow surface is smooth and solid with only 2 or 3 cm’s of soft melted snow on top (these are generally slopes that have been in the direct sunlight only for an hour or so e.g. an East facing slope at 9 or 10 am).
Then you need to get off those slopes when the snow surface begins to get too soft and mushy or you’ll start breaking through, which is dangerous for your knees. AND the slope may be unstable due to all the melting – then avalanches can be a problem on these sunny slopes.
Tip of the week
After a solid melt-freeze layer has formed and there has been a good melt during the day, it needs to freeze well the night before; the ideal is a cool clear night; for example: minimums of –2 degrees (or lower) at 2000 m if your going to be skiing at 2000m and above. This will allow the melted parts of the layer to freeze solid again from that altitude up.
Then, in the morning, you look to get on the east facing slopes first thing, 9 AM, because the sun rises in the east and therefore those slopes get the sun first. Then you move to south facing slopes, then west. Do this right and get some of the best skiing of the season.
Ride Hard !! Ride Safe
We will be updating our blog as much as possible especially if conditions start to look unstable (or if we have some nice photos from a great ski on www.henrysavalanchetalk.com/blog also on Twitter @HenryOff_Piste and Google+ and Facebook
Video is from last year, but the tips on spring skiing are relevant!