At PowderGuide, Lea Hartl is primarily concerned with weather and snow. She also does this outdoors on the mountain and in her job as a scientist.
Lea Hartl
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WeatherBlogs
WeatherBlog 19 2025/26 | Winter is (maybe) not over yet!
03/11/2026 • Lea HartlThe tough omega situation is wobbling and the warm, sunny weather is coming to an end for the time being towards the weekend. With cold air from the north and the chance of low pressure developing in the Mediterranean, it could even get quite wintry again, but the details are still unclear. In any case, it will become increasingly unstable from today and the dry, reliable firn phase will be over for the time being. -
WeatherBlogs
WeatherBlog 17 2025/26 | The wet westerly weather is coming to an end
02/25/2026 • Lea HartlWe repeat the latest message from the oracle - the wet westerly weather is over for the time being. We are heading towards spring, both in a statistical and meteorological sense and in terms of the character of the weather. The next few days will be very warm and very sunny. -
WeatherBlogs
WeatherBlog 15 2025/26 | Turbulent prospects!
02/11/2026 • Lea HartlPowderAlert has already reported it and we confirm it: All kinds of alerts in the western Alps and things are slowly getting more exciting in the east too. The western weather is producing one front after another and with a bit of luck we'll even manage a nordstau at some point this winter. -
WeatherBlogs
WeatherBlog 13 2025/26 | Cold air and warm water
01/28/2026 • Lea HartlAfter some snow at the weekend, winter is visually recognizable again in the Northern Alps, although the base still leaves a lot to be desired. Some measuring stations are scratching the record minimum for the time of year. At least it's snowing in the south this week and maybe next week too! -
WeatherBlogs
WeatherBlog 11 2025/26 | Milder with good chances of snow in the south
01/14/2026 • Lea HartlAfter around two weeks of fairly low temperatures, it will become milder again over the next few days. The cold air masses that have migrated to us from Arctic latitudes have moved eastwards and the high-altitude current is turning to westerly to south-westerly directions. After fresh snow in the north followed by considerable icy weather, the medium-term signs are now pointing to Föhn and südstau. -
WeatherBlogs
WeatherBlog 9 2025/26 | Air mass boundary at the turn of the year
12/31/2025 • Lea HartlThe lucky ConditionsReporters who made it to Piedmont, spoiled by PowderAlerts, can enjoy friendly touring weather over the next few days. For the rest of the Alps, it will be a little more unstable. Particularly in the east, the general development and especially the precipitation options are not yet easy to assess thanks to the indecisive development of low pressure and a fickle air mass boundary. -
WeatherBlogs
WeatherBlog 7 2025/26 | Contemplative Christmas thaw
12/17/2025 • Lea HartlEvery year, we and all the Christmas tourists are waiting in the wings, but the weather isn't really cooperating. The foggy areas in the foothills of the Alps are probably the most wintery at the moment. In the mountains, the sun is shining and temperatures are climbing into the double digits with the influence of föhn winds. -
WeatherBlogs
WeatherBlog 5 2025/26 | After the snow is before the snow
12/03/2025 • Lea HartlAs my colleagues predicted last week, all that's left for me this week is the meteorological start of winter and tough, snow-unfriendly weather conditions. For the time being, we'll have to make do with what's left of the first snow of the season and what the snow cannons are still producing. -
WeatherBlogs
WeatherBlog 22 2024/25 | Change of weather for the weekend?
04/09/2025 • Lea HartlThe cool, sunny spring weather will increasingly turn into summer temperatures with the onset of the Föhn wind. A late onset of winter is not in sight, but at least some precipitation is possible in the south after the long sunny spell. -
WeatherBlogs
WeatherBlog 20 2024/25 | Changeable spring weather, World Glacier Day
03/26/2025 • Lea HartlThe period of southern storms is over and this week we are dealing with slightly early April weather. A mix of sun and clouds and a few showers here and there characterize the picture. Winter might make a comeback over the weekend! -
WeatherBlogs
WeatherBlog 18 2024/25 | Refresh at last, at least in the south
03/12/2025 • Lea HartlTwo PowderAlerts after a long drought! And at least in parts of the Alps, it's continuing to be reasonably wintry! The south in particular is benefiting from a relatively stationary area of low pressure that lies diagonally over Spain and France and is repeatedly producing südstau this week. In the north (east), the amounts remain lower and will not significantly improve the snow conditions, but will hopefully at least alleviate the acute risk of forest fires. -
mountain knowledge
World of Science | Frank Techel (SLF) on people and models
02/26/2025 • Lea HartlFrank Techel is an avalanche forecaster and researcher at the SLF. He deals with the integration of models into operational avalanche forecasting and believes that there is great potential to improve avalanche warning when humans and machines work together. In the interview, he explains how "AI" supports the human SLF team in producing the bulletin and where the limits of the models lie.