Multiple Special Weather Statements Now In Effect – An Ice Storm Could Hit Tomorrow

Environment Canada is now using the term “ice storm”.  In their latest series of special weather statements, Canada’s weather agency says today’s rain will change to freezing rain early tomorrow. The freezing rain may persist for a few hours before changing to ice pellets. About 5cm will accumulate. The storm should quiet down Saturday night before another surge of moisture moves back in early Sunday morning. A prolonged period of freezing rain is possible Sunday before changing over to rain later in the day. North of the city, in Dufferin County, Orangeville and Shelburne the potential exists for amounts in excess of 20 mm of freezing rain by Sunday night. Winter driving conditions are expected Saturday and Sunday. Flooding may become a threat in some areas by Sunday evening.

Here are the special weather statements for various areas from Environment Canada:

4:30 AM EDT Friday 13 April 2018
Special weather statement in effect for:

  • City of Toronto
  • Caledon
  • Halton Hills – Milton
  • Mississauga – Brampton
  • Newmarket – Georgina – Northern York Region
  • Pickering – Oshawa – Southern Durham Region
  • Uxbridge – Beaverton – Northern Durham Region
  • Vaughan – Richmond Hill – Markham

Potential ice storm for parts of Southern Ontario Saturday into Sunday. Heavy rain potential later Sunday. Rain ahead of a slow moving system is expected to change to freezing rain early Saturday morning as colder air moves into the region. The freezing rain may persist for a few hours before changing to ice pellets. Several centimetres of ice pellets are likely during the day.

Latest analysis is suggesting that there will be a lull in the precipitation for much of Saturday night with maybe some patchy freezing drizzle. However, another surge of moisture will move back into the region late overnight or early Sunday morning. A prolonged period of freezing rain is possible Sunday before changing over to rain heavy at times later in the day.

There remains considerable uncertainty with regards to how long the freezing rain will last before changing over to rain on Sunday. However, the potential exists for some locales to see amounts in excess of 20 mm of freezing rain on Sunday.

Ice accumulations of this magnitude combined with gusty northeast winds to 60 km/h may result in widespread power outages due to fallen tree limbs and power lines.

Winter driving condition are expected on untreated roads Saturday and Sunday. Flooding may become a threat in some areas by Sunday evening. Rain is expected to taper off later Monday.

 

4:30 AM EDT Friday 13 April 2018
Special weather statement in effect for:

  • 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
  • Hanover – Dundalk – Southern Grey County
  • Saugeen Shores – Kincardine – Southern Bruce County
  • Lindsay – Southern Kawartha Lakes
  • Peterborough City – Lakefield – Southern Peterborough County

Potential ice storm for parts of Southern Ontario Saturday into Sunday. Heavy rain potential later Sunday. Rain ahead of a slow moving system is expected to change to freezing rain early Saturday morning as colder air moves into the region. The freezing rain may persist for a few hours before changing to ice pellets. Several centimetres of ice pellets are likely during the day.

Latest analysis is suggesting that there will be a lull in the precipitation for much of Saturday night with maybe some patchy freezing drizzle. However, another surge of moisture will move back into the region late overnight or early Sunday morning. A prolonged period of freezing rain is possible Sunday before changing over to rain heavy at times later in the day.

There remains considerable uncertainty with regards to how long the freezing rain will last before changing over to rain on Sunday. However, the potential exists for some locales to see amounts in excess of 20 mm of freezing rain on Sunday.

Ice accumulations of this magnitude combined with gusty northeast winds to 60 km/h may result in widespread power outages due to fallen tree limbs and power lines.

Winter driving condition are expected on untreated roads Saturday and Sunday. Flooding may become a threat in some areas by Sunday evening. Rain is expected to taper off later Monday.

4:24 AM EDT Friday 13 April 2018
Special weather statement in effect for:

  • Barrie – Collingwood – Hillsdale
  • Midland – Coldwater – Orr Lake
  • Orillia – Lagoon City – Washago
  • Haliburton – Minden – Southern Haliburton County
  • Oxtongue Lake – Fort Irwin – Northern Haliburton County
  • Bracebridge – Gravenhurst
  • Huntsville – Baysville
  • Port Carling – Port Severn
  • Town of Parry Sound – Rosseau – Killbear Park

Significant snow and ice pellets beginning tonight into Saturday. A messy mix of snow, ice pellets and freezing rain Sunday into Monday.  Rain ahead of a slow moving system is expected to change to snow or ice pellets tonight. There is also the risk of freezing rain overnight. Total snow and ice pellet amounts of 10 to 20 cm are possible before the precipitation tapers off later in the day. Northeast winds will gust to near 60 km/h on Saturday leading to local blowing snow reducing visibilities at times.

Another round of snow and ice pellets will affect the area Sunday into Monday with additional significant accumulations possible. Several hours of freezing rain are also possible Sunday night into Monday morning.

There remains uncertainty with regards to precipitation amounts, however there is a potential for this to be a high impact storm. Warnings may be issued later today as the event nears.

 

5:01 AM EDT Friday 13 April 2018
Special weather statement in effect for:

  • City of Hamilton
  • Niagara Falls – Welland – Southern Niagara Region
  • Catharines – Grimsby – Northern Niagara Region
  • Brantford – County of Brant
  • Woodstock – Tillsonburg – Oxford County

Potential ice storm for parts of Southern Ontario Saturday into Sunday. Rain ahead of a slow moving system is expected to change to freezing rain beginning Saturday morning as colder air moves into the region. Latest analysis is suggesting that many areas will receive several hours of freezing rain Saturday with significant ice amounts possible.

There may be a lull in the freezing rain Saturday night before another area of freezing rain moves in late overnight or early Sunday morning. The freezing rain is expected to change to rain possibly heavy at times Sunday as temperatures rise above freezing.

This has the potential to be a significant ice storm for some areas with freezing rain amounts in excess of 20 millimetres possible. The freezing rain combined with gusty northeast winds to 60 km/h may result in widespread power outages due to fallen tree limbs and power lines.

Untreated roads may be icy Saturday and Sunday. Flooding may become a threat in some areas later Sunday or Sunday night. Rain is expected to taper off Monday.

Photo Credit: Environment Canada

 

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Scott Fox
Scott Fox