Minutes earlier the air was relatively clear and snowfall minimal. But just as the train came into view the third heavy snowfall for the day come down, blanketing the fields with a layer of sleet. The hills behind were visible too and were covered in a fine layer of sleet.
48s34 48s35 and 48s36 certainly wouldn't be used to this sort of weather event, that usually only occurs a handful of times per year in this area.