Tuesday, April 15, 2014

Latest Env. Can. statement

6:22 AM EDT Tuesday 15 April 2014
Special weather statement in effect for:
  • Ottawa North - Kanata - Orléans
  • Ottawa South - Richmond - Metcalfe
After a long awaited taste of summer, winter returns with a snowy vengeance.
A sharp Arctic cold front has passed through Southern Ontario ushering out the mild air of the past few days. In the wake of the front, northwesterly winds are returning much colder Arctic air to the regions, with temperatures plunging to below freezing early this morning from the Dunnville through the Greater Toronto area to Renfrew areas and northwestward. The colder air and northwesterly winds will make temperatures fall to below freezing across Niagara and the rest of Eastern Ontario during the day today.

Meanwhile, a disturbance tracking up along the line of this cold front is bringing another area of precipitation with it. As temperatures drop to below freezing, rain showers are transitioning through a brief period of freezing rain and ice pellets to snow over Southern Ontario early this morning, and over Eastern Ontario later this morning or early afternoon.

Indications show that a snowfall of 5 to 10 cm for much of Southern Ontario will occur today. A total of 10 to 15 cm of snow are possible for some areas east of Georgian Bay.
Driving conditions will deteriorate quickly as the freezing precipitation and snow move in. Motorists should be prepared for hazardous winter driving conditions due to low visibility in areas of heavier snow, and accumulating snow on untreated roads.

The snow will end over all regions late in the day. Winter's Victory will be only temporary, as temperatures will moderate back up closer to normal by the end of the week.

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