The second 20 cm snowfall of the winter is likely this week as Environment Canada forecasts a drop of somewhere between 10 and 20 cms between Wednesday and Friday. With Toronto residents still struggling with single-lane streets and snow piles blocking movement of all kinds, it’s easy to foresee considerable paralysis in the forecast as well as snow. The total snowfall accumulation is estimated to be 10 to 20 cm by Friday. There will be reduced visibilities due to snow and local blowing snow. There will be rain showers tonight changing to snow on Wednesday afternoon for the Golden Horseshoe.