Powder Alert #15 is ON!


Par meteomorris sur 2 mars 2020 · 10

It's going to be a turbulent week with lots of snow from time to time. The bussiest week in the Alps is behind us and especially the hidden gems in the Alps will be the place to be this week. With all the snow in the forecast this week is the ideal moment to go powderchasing. With friends or under the guidance of a mountain, snowboard or ski guide. In this article:

  • Monday: Genoa low with snow for the southwest and south
  • Monday to Tuesday: snow sandwich
  • Tuesday and Wednesday: where to go?
  • Thursday, Friday and Saturday: new storm cycle

Genoa low
Genoa low

Monday: Genua low with snow for the southwest and south

A lovely start of the week with a very powerful Genua storm depression, what else to wish for? A Genua low is something we have not seen since November 2019. With a powerful southwestern current, moist air is pressed against the Southwestern and Southern the Alps. Although the air moving is relatively mild, the snow line is very low due to the strong orographic cooling. The snowline will be on average around 1000-1400 meters, but locally around 600 meters in Northern Italy and south of the Ecrins.

Most snow falls in the French Southern Alps on Monday morning. Especially south of the Ecrins massif heavy snow is expected. On average I do expect around 15-30 cm with locally up the 50 cm towards the end of the day.

During the day, the cold front (the blue line on the chart above) enters the northwestern Alps and then it starts snowing heavily in the French Northern Alps. Up to and including Tuesday morning I do expect around 20-45 cm with locally accumulations up to 70 cm.

At the same time once the warm front (the red line on the chart above) passed the French Southern Alps it enters the Po valley and will be full force pressed against the southern side of the Alps. This is the moment when it starts to snow heavily in the northern Italy. From the Lombardia and the Dolomites to the Alpe di Giullia there will be powder. Here too, I do expect an average of 20-45 cm with locally accumulations up to 90 cm.

Snow sandwich
Snow sandwich

Monday to Tuesday: snow sandwich

In the night from Monday to Tuesday, the Alps are trapped between two low-pressure areas. First of all there is the Genoa low that pushes a lot of moisture from the south towards the Alps. Normally this produces a strong Föhn wind on the north side of the Alps. But now the clouds that hit over the main Alpine ridge are pushed back with a northern current so that the north side of the Alps also sees snow. as well The Swiss Alpine Nordhang, Vorarlberg and the Austrian Alpine main ridge in particular benefit from this. Here I also expect some 20-40 cm of fresh snow. The lower parts of Austria (in particular everything north of the Inn) get considerably less.

The course of the snowfall can be seen in the video below. (source: WXCharts, model: ECMWF). Read the above text again carefully and then watch the video below step by step. A storm like this is a beautiful example of what nature is capable of.

Tuesday and Wednesday: where to go?

The snowfall of Monday and Tuesday will defintely improve the conditions. Tuesday and Wednesday are therefore powder days in large parts of the Alps. Exceptions are the Piedmont and the lower-lying areas of Austria north of the Inn and the lower-lying areas of the Salzburgerland and Styria. On the map below you can see that they get significant less amounts of fresh snow.

Snow forecast untill Wednesday
Snow forecast untill Wednesday

On Tuesday the sun comes through again from the west and Wednesday the sun shines in large parts of the Alps. The biggest holiday crowds are over, last minute booking is not really a problem and you will find excellent powder in the hidden gems.

My tips:

  • The northern Hautes Alpes
  • the entire French Northern Alps
  • Western Switzerland (in particular western Wallis and the areas around Gstaad)
  • the entire Swiss Alpine Nordhang
  • Vorarlberg
  • the Austrian Alpine main ridge
  • the north of the Italian Lombardia
  • the Dolomites
  • the border areas of Carinthia and Ost-Tirol
  • the Alpi di Giullia

Thursday, Friday and Saturday: new storm cycle

A new storm cycle with again a lot of snow for large parts of the Alps will move in on Thursday. Because the exact course of the storm path is not clear yet, it is too early for details. But you may assume that powder alert#16 will be in effect from Thursday and that the weekend of 6-8 March will be a very good one to chase some powder. For the time being, the storm path of powder alert#16 appears to be similar to that of powder alert #15, with the biggest difference that the lower parts of Austria also seem to get some significant accumulations.

If we look beyond the weekend of March 6-8, then according to the American model we get a relatively cold and sunny week while the European model hints at first cold, then mild and then again a new storm cycle. We will see what the future will bring to us.

In short, good prospects for the next 10 days. If you have urgent questions, ask them here or via my insta or facebook pages. I will do my best to answer asap.

Your Powfinder, Morris

Commentaires


  • elecas
    Advanced
    elecas op 2 mars 2020 · 12:19
    Hi morris, what about the wind? this winter has been superwindy so far in the austrian alps. Will this storm be less windy?
    www.elecas.es
  • meteomorris
    Expert
    meteomorris op 2 mars 2020 · 15:48
    Hi morris, what about the wind? this winter has been superwindy so far in the austrian alps. Will this storm be less windy?elecas op 2 Mar 2020 12:19

    @elecas strong southern winds (Föhn) today on the Northern side of the Alps. Wind will drop once the cold sector moves in.
    The main alpine ridge will have to deal with strong Southern and afterwards moderate to strong Northwestern winds.
    May the powder be with you.
  • semca
    Advanced
    semca op 2 mars 2020 · 16:43
    Hi Morris, we are deciding where to go in Austria for Tuesday and Wednesday. We can't decide between Arlberg and Nassfeld. In Nassfeld there is quite a lot of snow and it snows heavily there now, but the temperaturse there seems quite high so Im a bit afraid about a quality of snow. Arlberg has less snow but better temperatures. What do you think? Thanks
  • meteomorris
    Expert
    meteomorris op 2 mars 2020 · 16:56
    Nassfeld.... @semca
    May the powder be with you.
  • wlf
    wlf op 3 mars 2020 · 10:35
    Will it be cold enough in the three valleys on Thursday? Forecasts showing freezing level over 2000m when the precipitation comes.
  • meteomorris
    Expert
    meteomorris op 3 mars 2020 · 11:01
    @wlf

    The warm front is expected to arrive around midnight


    Upper airflow is SW at that time, so expect high winds and mild temperatures. Not to much precipitation

    Cold sector will arrive around or after lunch time


    Then the upper airflow turns NW and will bring significant precipitation.
    Thursday will not be the best day. Friday might be epic though.
    May the powder be with you.
  • Phoerixx
    Advanced
    Phoerixx op 3 mars 2020 · 15:11
    Hi, SNOW FINALLY for the EAST!
    Just a reminder for the south-east Alps ... Nassfeld, Sella-Nevea ... Ski resorts on the borders of Italy-Austria-Slovenija had high daily temperatures, some rain in the past weeks. As a result a HARD FORSTED cover, thick ICE formed, a very slippery base for the new snow! Today and tomorrow avalanche risk is 4/5 Very high!!! Manly because of the icy base. Be safe!
  • meteomorris
    Expert
    meteomorris op 3 mars 2020 · 15:19
    @Phoerixx thanks for sharing!
    May the powder be with you.
  • Rafael_Cordeiro
    Advanced
    Rafael_Cordeiro op 3 mars 2020 · 22:39
    The most excellent news, thanks Morris! Also great to know that the next storm cycle will track similarly. Should we expect stronger winds for the Friday/Saturday storms, or will it be around the same as the Monday/Tuesday?
    I got last night in Kappl (Paznauntal) and after a night and morning with a lot of snow, the sun came out for a few hours and it was epic!! And at least in Kappl there was not much wind during the day. Also it didn't seem to have moved that much snow around during the night, most aspects we rode were similarly good! (especially above 2000m)

  • meteomorris
    Expert
    meteomorris op 4 mars 2020 · 09:57
    @Rafael_Cordeiro thanks for sharing!
    Follow me on [insta](http://bit.ly/2Zo3sZH) and [facebook](http://bit.ly/2S0Q8ak)

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