Showers and thunderstorms moved only slowly
Yesterday, showers and thunderstorms initially developed along the foothills of the Alps, and later it became widespread wet. The precipitation initially shifted from west to east. In the course of the afternoon, the speed of movement slowed down until around midnight the precipitation hardly moved eastwards anymore, lost momentum and finally gradually subsided.
Animation of yesterday’s precipitation between
Animation of yesterday’s precipitation between 12 and 24 UTC.
Stationary thunderstorm over the Napf brings heavy rain and hail
Due to the generally slow speed of movement, the showers and thunderstorms almost came to a standstill. One such stationary thunderstorm cell formed yesterday over the Napf. This brought large amounts of precipitation in a short space of time. And there was also hail, as the following animation of the webcam images from the Berghotel Napf impressively shows.
Animation of the webcam images from the Napf mountain south korea phone number library restaurant: The hail covers the meadow within 15 minutes. The hail has not completely melted by the time it gets dark at 8:45 p.m.
The measuring station on the Napf recorded around 89 mm of rain in less than 3 hours, with a total of 113 mm measured yesterday.
Blocking high in the east
The reason for the slow shift is a blocking high east of Switzerland with its centre over Russia. This resulted in only very weak winds, while large-scale phenomena such as low pressure areas will only reach us in the next few days.
Clearly visible: The pronounced high pressure area over Russia
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What does this mean for the weather? First of all, it means that the layered clouds began to dissipate. This was already the case in French-speaking Switzerland in the morning. The east remained under the layered clouds until midday and some precipitation fell. Thermals quickly formed with the sun’s rays, and the remaining moisture created cumulus clouds. empty the recycle bin to free Continuous radiation allowed these to grow and rise into higher layers.
Rising cumuli over the western Mittelland and the Jura, taken in Cheseaux-sur-Lausanne.
Rising cumuli over the western Mittelland and the Jura, taken in Cheseaux-sur-Lausanne. (Source: Meteomeldung/App)
There were local showers and isolated thunderstorms in adb directory the afternoon. With the current being weak across a large area, the wind depends on local conditions, such as mountain and valley winds or gusts of wind near thunderstorms. The temperature depends largely on the degree of cloud cover. If it remains overcast, the maximum temperature will logically be lower than with strong sunshine.
Blocking high continues to determine the flow pattern
The following days will also be determined by the blocking high in the east, which acts like a wall for the approaching lows, preventing them from getting over. In concrete terms, this means that the frontal systems can only move very slowly eastwards. This also applies to the warm front and the associated cold front, which will reach us between Tuesday afternoon and Wednesday morning. Due to the slow movement, large amounts of precipitation may accumulate again.
The intense rainfall also caused the streams in Obwalden to rise, as the weather report from Giswil shows.
The intense rainfall also caused the streams in Obwalden to rise, as the weather report from Giswil shows.