The National Weather Service says a winter storm will bring snow, sleet and rain to Macungie and Lower Mac Friday into early Saturday morning.
The major impact will be in New England where a nor'easter-type storm could bring blizzard conditions and almost a foot of snow.
Snow should develop Friday morning, then mix with or change to sleet and rain from southeast to northwest. Snow could be heavy at times later Friday afternoon and Friday night, the Weather Service says.
"Very hazardous travel is expected for the evening commute and well into the night with visibility down to one quarter mile at times," the Weather Service's post indicated at 11 p.m. Thursday.
The storm should end early Saturday morning leaving Saturday partly sunny with a high of 33.