Alerts for: York - Durham

Statements

6:35 AM EST Sunday 21 January 2018
Special weather statement in effect for:

  • Newmarket - Georgina - Northern York Region
  • Pickering - Oshawa - Southern Durham Region
  • Vaughan - Richmond Hill - Markham

Freezing rain now appears to be less significant for Monday.

A Colorado low is forecast to cross the lower Great Lakes for the start of the work week. Some inconsequential drizzle may be present during the Monday morning commute. A few areas north from the Oak Ridges Moraine into the Dundalk Highlands may also have patchy freezing drizzle.

Updated weather guidance suggests the freezing rain threat has lessened for Monday from the Greater Toronto Area. The colder air that was expected to seep back into Southern Ontario during the day Monday will likely remain farther east across Eastern Ontario. Temperatures will still be relatively close to the freezing mark, thus some patchy freezing rain is still likely Monday afternoon, especially north from the Oak Ridges Moraine into the Dundalk Highlands. The Greater Toronto Area should see mainly rain, except perhaps the northern suburbs where some patchy freezing rain may occur. The lack of Arctic air prior to the onset of precipitation will diminish the impact of slippery roads. Only a few regions may experience icy roads during the Monday evening commute.

Freezing rain warnings may be issued for some areas as the event approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ec.cpio-tempetes-ospc-storms.ec@canada.ca or tweet reports using #ONStorm.

 

4:42 AM EST Sunday 21 January 2018
Special weather statement in effect for:

  • Uxbridge - Beaverton - Northern Durham Region

Significant freezing rain likely developing Monday.

A Colorado low is forecast to cross the lower Great Lakes for the start of the work week. Some inconsequential drizzle or patchy freezing drizzle may be present during the Monday morning commute.

However, more significant freezing rain is likely to develop during the day Monday. Increasing easterly winds are expected to pump in slightly colder air, causing temperatures to dip to near or just below the freezing mark. As a result, incoming precipitation from the low is expected to fall primarily as freezing rain, particularly Monday afternoon and evening. Several millimetres of ice accumulation are possible before it changes to rain in the overnight hours. The Monday evening commute will likely be impacted by icy roads. Localized power outages are also possible by Monday night.

Freezing rain warnings will likely be issued as the event approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ec.cpio-tempetes-ospc-storms.ec@canada.ca or tweet reports using #ONStorm.

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