HALIFAX -- Snow is not too uncommon of an occurrence for April. After all, looking at climate data for Fredericton, Halifax, and Charlottetown shows that about 10 to 20 cm of snow, on average, falls this month. Average April snowfall near the provincial capitals from 1981 to 2010. In fact, if we jump forward to Saturday's date, April 17th, we find that weather stations near all three of those locations have recorded a significant snowfall of several centimetres or more in the past. Greatest snowfalls for an April 17th on record near the provincial capitals. So what's headed our way? It's a low-pressure system coming up the U.S. eastern seaboard. The low approaches Friday night and passes the Atlantic coastline of Nova Scotia Saturday into Sunday morning.