[Update] Freezing Rain Is On The Way – Substantial Storm Possible For Saturday

Environment Canada has updated their special weather statement, regarding the expected freezing rain. They now say a period of freezing rain will hit this morning. Near the Lake Ontario shoreline, only rain is expected. In the 401 corridor it will be fairly brief. However, it could persist for a couple of hours north of the city and in areas over higher terrain, like the Dundalk Highlands and the Halton Hills. Saturday is really the day to watch. Ice accumulations in excess of 20 mm will be possible in some places. It will become rain Sunday morning. Total precipitation amounts in excess of 50 mm will be quite possible. Here is the full statement:

4:55 AM EDT Thursday 12 April 2018
Special weather statement in effect for:

  • City of Toronto
  • City of Hamilton
  • Caledon
  • Burlington – Oakville
  • Halton Hills – Milton
  • Mississauga – Brampton
  • Newmarket – Georgina – Northern York Region
  • Pickering – Oshawa – Southern Durham Region
  • Uxbridge – Beaverton – Northern Durham Region
  • Vaughan – Richmond Hill – Markham
  • Innisfil – New Tecumseth – Angus
  • Orangeville – Grand Valley – Southern Dufferin County
  • Shelburne – Mansfield – Northern Dufferin County
  • Guelph – Erin – Southern Wellington County
  • Kitchener – Cambridge – Region of Waterloo
  • Mount Forest – Arthur – Northern Wellington County
  • Barrie – Collingwood – Hillsdale
  • Midland – Coldwater – Orr Lake
  • Orillia – Lagoon City – Washago
  • Bruce Peninsula – Sauble Beach – Tobermory
  • Hanover – Dundalk – Southern Grey County
  • Owen Sound – Blue Mountains – Northern Grey County
  • Saugeen Shores – Kincardine – Southern Bruce County
  • Brantford – County of Brant
  • Woodstock – Tillsonburg – Oxford County
  • Bracebridge – Gravenhurst
  • Huntsville – Baysville
  • Port Carling – Port Severn
  • Town of Parry Sound – Rosseau – Killbear Park
  • Apsley – Woodview – Northern Peterborough County
  • Peterborough City – Lakefield – Southern Peterborough County

Potential brief freezing rain this morning.
Potential ice storm in some areas Saturday into Sunday morning.
Heavy rain potential Sunday.

A fast-moving low pressure system will cross Southern Ontario today bringing an area of rain with it. The precipitation may start as freezing rain this morning before quickly changing to rain as temperatures rise above the freezing mark. Any freezing rain that occurs is expected to light. Closer to the Lake Ontario shoreline, only rain is expected.

A much more significant freezing rain threat appears likely for many areas starting Saturday into Sunday morning as a slow-moving low pressure system approaches the area. Precipitation may start as rain, but increasing northeasterly winds will draw colder air from an arctic high pressure system to the north, resulting in a changeover to freezing rain during the day Saturday. The freezing rain is expected to change back to rain possibly heavy at times Sunday morning as temperatures rise above the freezing mark.

As this storm system is still a few days away, there is uncertainty regarding its severity. However, areas closer to Lake Ontario may remain slightly milder on Saturday with a changeover to freezing rain not expected until later in the day. As a result, freezing rain amounts in these regions may be less than in other areas.

Ice accumulations in excess of 20 mm will be possible in some places. Ice accumulations of this magnitude combined with gusty northeast winds may result in widespread power outages due to fallen tree limbs and power lines.

 

4:08 AM EDT Thursday 12 April 2018
Weather advisory in effect for:

  • Orangeville – Grand Valley – Southern Dufferin County
  • Shelburne – Mansfield – Northern Dufferin County
  • Caledon
  • Mount Forest – Arthur – Northern Wellington County
  • Hanover – Dundalk – Southern Grey County

Winter Weather Travel Advisory for Early This Morning. Occasional light freezing rain is expected to develop early this morning then quickly change to rain as surface temperatures rise above the freezing mark. Some roads may be slippery early this morning.

Photo Credit: Environment Canada

Posted in Local News, News, Scott Fox