As PKP PLK reports:
All railway lines in Lower Silesia, except for the Węgliniec–Horka section, are now passable.
It adds:
Due to difficult winter conditions, icing of the overhead contact line and problems starting train sets, changes to rail services occurred on Lower Silesian lines.
Thanks to the commitment and effective work of the technical services, train traffic has been restored on the Lubań–Gierałtów, Wrocław–Leszno, Legnica–Rudna Gwizdanów and Głogów–Grębocice sections.
And emphasizes:
Some trains may experience delays resulting from earlier interventions and the still-dynamic weather situation. Network trains are operating in areas affected by icing.