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WeatherBlog 4 2024/25 | Stormy times ahead!

We have weather

12/04/2024
Lea Hartl
As we all know, the WeatherBlog likes it when things are happening in the weather kitchen and suffers from acute boredom, which turns into restlessness if the weather stays the same for too long. We are therefore pleased to be able to announce: Something is happening! The next few days offer (almost) everything that Alpine weather can do.

Current situation

We are currently under the influence of a rather weak low-pressure system, which is bringing some snowflakes and relatively wintry temperatures. There were snowflakes yesterday and some today (Wednesday) on the northern slopes of the Alps. The cold air is more or less everywhere. South of the main Alpine ridge, north föhn is likely to join in today.

Meanwhile, off the European Atlantic coast, the Azores High is pushing in strongly and by Thursday it will have pushed the weak low to one side. In the west, it will be sunny from the morning. It may take a little longer in the east, but you can expect plenty of sun here too tomorrow - a good opportunity to inspect the freshly fallen snowflakes, even if there aren't many of them!

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Storm at the weekend

New momentum will be added to the weather in the night to Friday (or in the west on Thursday afternoon). The Azores High will not manage to bulge northwards, but will be virtually overrun by the strong westerly current. Atlantic low pressure and an associated frontal system approach. Initially, we were briefly caught by the warm front and the warm air mass behind it. However, the cold front doesn't take long to arrive on Friday. It gets stormy and colder and it snows! The latter will start mainly in the western Alps in the west and northwest. The next day, however, everything will change again!

The Azores High will return and push far north over the Atlantic. As a result, the westerly current is widening and a strong low is sliding downstream of the wedge (to the east) towards the Alps. As is usual in this constellation, we are initially hit by warm air on the front side of the trough, which is pushed towards the Alps from the southwest. Result: Föhn! This time the variant from the south. The whole thing moves quickly and the Föhn only passes by briefly. This will be followed by much colder air and potentially quite heavy snowfall in the north over the course of the weekend.

There are still some unanswered questions about the details, but we can make a statement: The chances of a message from the oracle are increasing! And, at the weekend, it will be the rather rough kind of storm low including gale-force gusts and a snow line that first rises sharply within a few hours and then drops again by around 1000 meters in altitude. The low temperatures are likely to stay with us into next week.

Until then: waiting for winter

Until it really snows, artificial snow saves the firmly planned ski resort openings and the early season turns of the motivated. Artificial snow - or "technical snow" if you want to be precise - is present in almost all Alpine ski resorts throughout the season. If there is real snow next to and above it, it is just not as noticeable as a white stripe in brownish meadows. A few years ago, a study appeared in the specialist journal "Tourism Economics", which defined what an optimal ski day (OSD) looks like in order to then consider when such days occur and how this might affect the behavior of paying guests. According to the authors, it doesn't matter whether there is artificial snow or real snow on the slopes for an optimal ski day. The main thing is that it is white next to it, because the paying guests want the winter look! Technical snow has certain advantages when it comes to grooming uniform slopes anyway, because it has more contact points, is harder and can be easily compressed. A 30 cm thick artificial snow slope withstands the early season rush much better than 30 cm of natural snow, but is of course more expensive to produce initially... An OSD also needs mild temperatures, sunshine, lots of open lifts and preferably a weekend. The WeatherBlog has a different opinion on the subject of OSD - the scientific consensus may not yet have been reached here.

Anyone who has been skiing in the last few days has had a good chance of getting a load or two of snow cannon snow in their face, because it is still too scarce away from the ski resorts and all the snowmaking systems are running in the ski resorts in order to provide the reliable 30 cm of artificial snow as comprehensively as possible. The WeatherBlog doesn't think it's quite an ideal day's skiing yet, but has to admit that the first very mediocre tours on the edge of the slopes next to the roaring cannons and the equally mediocre descents over artificial snow hills somehow contribute to the anticipation of winter. Not because the snow cannons and artificial snow are particularly attractive, but because we know that it can be different and, with a bit of luck, soon will be, because it's finally cold outside again and just uncomfortable enough to appreciate the coziness inside, and because mediocre sliding around is still better than walking back down again.

So let's hope for the lows at the weekend and that the really perfect skiing days gradually get closer!

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