Environment Canada's updated special weather statement says the western half of Prince Edward Island may receive 20 cm of snow Monday in the forecasted nor'easter.
The low pressure system moving up the U.S. eastern seaboard will deepen as it crosses Nova Scotia on Monday.
While the western half of the Island is forecast to get snow, in the east the snow will change to freezing rain and ice pellets, then to rain.
Environment Canada said a slight change in the track of the low could change the prognosis.
Weather warnings could be issued late Saturday or early Sunday morning as more information is gathered.