The snowdrift accumulations generated over the last few days are still prone to triggering in places, particularly on north-facing slopes. On Friday as a consequence of fresh fallen snow and northwesterly winds, further snowdrift accumulations will be generated.
From the southern Valais over the northern Ticino as far as the inneralpine regions of Grisons, weak layers threaten from inside the snowpack. During the last few days in these regions, several large-sized avalanches triggered from deeply embedded layers of the snowpack which were triggered by persons.
In the northern regions, isolated gliding avalanches continue to be possible.

Following a night of predominantly clear skies it was partly sunny to begin with on Thursday, accompanied by some cloudbanks. During the course of the day, heavy cloud cover moved in from the west.

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At midday at 2000 m, between -2 °C in the western regions and 0 °C in the eastern regions.

• Winds in the northern regions were blowing at moderate strength at high altitudes, in some places at strong velocity from southwesterly directions, in the upper Alpine valleys there was foehn wind blowing temporarily;
• in the southern Valais and in the Ticino, winds were blowing at light to moderate strength from southerly directions.

Nighttime skies on Thursday will be clear in the southern regions, in the other parts of Switzerland predominantly overcast accompanied by shower-like precipitation. The snowfall level will rapidly descend from 1300 m down to low lying areas. During the daytime on Friday in the northern regions, skies will be overcast to start with, accompanied by final snowfall. Subsequently, skies will clear up for a brief spell. During the afternoon in the northern and the eastern regions, showers will set in once again. In the Valais it will be partly sunny, on the southern flank of the Alps predominantly sunny.

Between Thursday evening and Friday midday, the following amounts of fresh snow are expected above approximately 1300 m:

• regions north of an imaginary Rhine-Rhone line, northern Prättigau, Silvretta: 5 to 10 cm; as much as 15 cm on the northern Alpine Ridge;
  
• in the remaining regions of Switzerland, only a few centimetres; on the southern flank of the Alps it will remain dry.
  

Temperatures will drop. At midday at 2000 m, -8 °C in the northern regions and -6 °C in the southern regions.

Winds will be blowing from westerly to northwesterly directions,

• predominantly at moderate strength in the northern regions during the nocturnal hours on Thursday, at light strength in the southern regions;
• blowing at moderate to strong velocity during the daytime hours on Friday.