Bill it takes a real blizzard for our shop to call work.
Instead we are constantly reminded it is our own responsibility to determine if we can safely make it to work.
In six winters there has only been one day I recall work getting called off, I assumed work was on and made it in.
I was told to go home and they paid me 4 hours for my trouble.
Last winter the frost was 36" and the job I was on needed the ground heaters that walrus described to keep it moving.
You think 600 kcmil is stiff in normal temps try working it in 20F