looduskalender.ee

In southern Estonia today a snow-like precipitate had formed overnight on the branches of trees, grass straws sticking out of the snow and on other objects. Soft rime usually develops in foggy and windy weather with air temperatures at -2  to -7° C; it has a non-crystalline structure and a knobbly surface and develops when chilled droplets of fog freeze rapidly.

 

When the weather turns towards thaw this rime changes into ice glaze as the amount of humidity increases. The glaze can grow very dense and heavy and become a danger to trees or even power lines.