The last few years worth of Marches have reeeeeeeally spoiled the lot of you, especially last year with it's crazy warmth.
Let me take you back a short 5 years ago to March of 2008. The full dataset is here for Ottawa but let me give some highlights:
Mar. 5th: 29cm snowstorm
Mar. 7/8th: 45cm snowstorm
Mar. 19th 5 cm storm
The snow depth at its peak was 87 cms on March 14th.