Police say they responded to hundreds of collisions as yesterday's snowstorm rolled across southern Ontario, creating slick roads and whiteout conditions. Two people are known to have died in collisions likely caused by the weather, and a Hamilton woman died after collapsing while shovelling snow. The O-P-P appealed to motorists to stay off the roads so that plows could do their job and clear the highways. Numerous flights were cancelled as the storm dumped up to 30 centimetres of snow in many areas of southern Ontario. Mainly sunny skies and warmer temperatures are forecast across the region and in Oxford County today. The snowfall may be good news for water tables. Oxford County manager of water services Deb Goudreau says the maximum benefit will be felt if it is a slow thaw this spring. According to Goudreau, a slow thaw will allow the water to soak into the ground and into the water table and replenish to current low levels. If the thaw is rapid, most of the water will run off as surface water, which will not fill the underground aquifers.