It should also be noted that this sometimes windy, dry and hot weather will encourage an increase in pollen concentration in all regions, even though the grass season has already started.
What about next?
Just as a new depression will approach the British Isles on Saturday, a new cold drop could approach Switzerland from the west during the weekend. The subsidence of the high pressure zone over northern Europe could thus herald the return of a more dynamic westerly current to our regions. Thus, as the currents accelerate at altitude, a certain instability should set in, allowing cumuliform clouds to bud on and near the reliefs from Saturday. Potentially stormy showers could cause trouble in the mountains from Saturday. On Sunday, the situation could well spill over into the plains, but it is still too early to say. The westerly current should finally succeed in establishing itself at the start of next week, thus directing humid and unstable air towards our regions which should result in once again unsettled weather, but not necessarily cold like the indicates the medium-range probabilistic forecast for Payerne below.
