Small things can have big effects. Daniel misses the train in Bern, meets the friendly tourist Agnes, and soon Daniel moves to Sweden to be with Agnes. A small local effect (someone misses the train in Bern) thus leads to a stranger suddenly settling in a small village in Sweden.
It’s similar with the weather. A small change in one place can have a big impact somewhere else. As exciting as this is, it can be just as annoying when it comes to forecasting.
satellite film.
Satellite film from today 8 a.m. to 2 p.m. At the beginning, the eastern half of Switzerland is under thick clouds, then the clouds gradually clear up. (MeteoSwiss)
How strong will the breeze be?
Just this morning we discussed in the weather center whether this could be the case today, although admittedly only in a very harmless form. In the east of Switzerland the clouds were thicker than forecast. The reasoning was as follows: In western Switzerland the sun will shine all day, as predicted, and heat up the air. If the clouds in the east only slowly clear up, it would be a little less warm in eastern Switzerland than forecast. This would increase the temperature difference between eastern and western Switzerland. This in turn causes a pressure difference between the two regions. Cold air is denser or “heavier” than warm air. In eastern Switzerland the
Pressure
This means that the air flows from east to west and the bise blows in the central plateau. The greater the temperature difference, the greater the pressure difference and the stronger the wind.
The question now was how strong the bise would be. Depending on this, the wind forecasts would have to be adjusted even on Lake Geneva, although this region is far away from clouds.
Surfers on a lake.
Surfers on Lake Neuchâtel today. They would probably have been happy if saudi arabia phone number library the breeze had been a little stronger. It was a shame for them, but we meteorologists
were quite happy that the breeze stuck to our forecast. (Roundshot)
Weather helped us
We decided that the clouds would quickly disappear and the effect would be negligible. The weather was of the same opinion: the clouds soon cleared and in eastern Switzerland it became as warm as expected. The fact that automate your email campaign management the bise was still blowing in the Mittelland was due to the fact that the air mass in the east was generally less warm than in the west due to the weather conditions. Even with full sunshine, it would not have been as warm in the east as in the west. So we had to expect a certain amount of sunshine anyway.
pressure difference
The only question was whether this pressure difference would be agb directory greater than expected because of the clouds. Since this was not the case, the bise blew as strongly as predicted today.
Extensive, wavy cloud with a cow underneath.
No, they are not alto-coccumulus clouds, but altostratus undulatus (undulatus because it is wave-like), which moved over the Schwyzer Alps this morning. Today these clouds, which were a little denser than expected, had little influence on our forecasts. Daniel Gerstgrasser.