The Met Office has issued a snow warning for Calderdale.
The yellow “be aware” warning is valid from 8am on Wednesday to 11.55pm on Thursday.
A Met Office spokesperson said: “Across Northern England 3-8 cm could accumulate by Thursday morning, especially over high ground.
“Strong, gusty winds will lead to drifting and temporary blizzards over high ground, while icy surfaces and lightning pose additional risks in some areas.”
The spokesperson said the public should be aware of the potential for disruption to travel.