A late season heavy snowfall will move in starting late Saturday and in place for Sunday.
The system is the result of a low pressure system out of the Gulf of Mexico, combining with a second low in the midwestern U.S., which will then move over Cape Cod and south of the Maritimes.
While the track of weather system doesn't take it directly through the region, it is close enough that a lot of moisture off the Atlantic is going to be wrapped into the cold air. This will result in a significant snowfall for much of southern New Brunswick, Nova Scotia and P.E.I.
Things may shift slightly, but currently, much of Nova Scotia will see at least 20 cm with further amounts of 30 cm to 45 cm for some areas of the province.
In New Brunswick, a swath of 30 cm to 45 cm of snow is possible from the southwestern corner all the way to Moncton and the southeast. Snowfall amounts will taper the farther north and northeast you go in New Brunswick.
Prince Edward Island will be a tricky forecast, as the heaviest snow may clip Charlottetown and eastern areas of the province. The far west of P.E.I. could remain just outside of the steadiest snowfall.
Much like Nova Scotia, it would be best to prepare for at least 20 cm of snow across the province.
Environment Canada has also issued special weather statements for all three Maritime provinces ahead of Sunday's weather disturbance.