Current situation and outlook
The weather situation is, to quote last week's WeatherBlog, still "complicated" and yet somehow surprisingly uninteresting. Complicated are small high-altitude lows that float aimlessly around the Alps and provide clouds and a little precipitation here and there. Accurate forecasts are difficult because the small drops of low pressure do not have a clear destination determined by a larger-scale current, but rather move around more or less without direction. Tomorrow (Thursday), a small cold front from a small low-pressure trough will hit the northern Alps. This will make it noticeably colder than recently and there will be a few unproductive snow showers. Friday will be similar. South of the main ridge, it will remain dry with north föhn.
Basically, the blocking high pressure in the west will continue to dominate our weather. The high has shifted somewhat and now extends as far as Greenland. Over the next few days, the high wedge will push further and further north and form a merger with an opposing high pressure system that is making its way from Alaska into the Arctic Ocean. This will cut the already very irregular tropospheric polar vortex in two and make the blocking situation even more pronounced.
