Numerous fronts brought snow into Finland during the second two weeks of January 2019.
By Vesa Nietosvaara (EUMETSAT)
In the animation of the Meteosat-11 Airmass RGB overlaid with ECWMF Mean Sea Level Pressure (Figure 1), we can see that, altogether, three frontal passages occurred in southern Finland. Each of these brought 5–15 cm of snow.
Figure 1: Meteosat-11 six-hourly Airmass RGB overlaid by ECMWF Mean Sea Level Pressure analysis data, 21 January 12:00 UTC–30 January 12:00 UTC.
The later snowfall episode (29–30 January) was caused by low pressure moving from the North Sea over to Sweden, bringing snowfall and increased southeasterly winds to Finland. During that episode snow depths increased in some places. In Helsinki the snow depth increased by nearly 20 cm, resulting in the total snow depths of more than 50 cm (Figure 2), covering the city in a thick white blanket of snow (Figure 3).
Blizzard to dump up to 20cm of snow on southern Finland (Helsinki Times)
Previous case studies
Shallow convection over Finland (2 May 2014)
High ice concentration in the Gulfs of Finland and Riga (3 Feb 2010)