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ATLANTIC CANADA | Unsettled pattern

Miserable travel, huge winter storm blasts east Newfoundland


Digital writers
theweathernetwork.com

Thursday, December 6, 2018, 7:25 PM - An Atlantic storm system is tracking over the Avalon Thursday night through Friday morning with a swath of heavy snow targeting the Avalon Peninsula. Combine the hefty snow totals with powerful winds and its a recipe for near impossible travel in blizzard-like conditions. More on this strengthening system and snow totals, below.

WINTER IS HERE: How will El Niño shape Canada's upcoming winter? Find out with The Weather Network’s 2019 Winter Forecast | FORECAST & MAPS HERE


WEATHER HIGHLIGHTS

  • Winter storm watches and warnings in place, 20+ cm of snow could fall over the Avalon through Friday
  • Strong wind gusts approaching 70 km/h will lead to blizzard conditions overnight Thursday
  • Another shot of snow for Newfoundland will come Saturday to Sunday, where an additional 5-10 cm could accumulate in that time
  • Keep on top of active weather by visiting the ALERTS page.

WINTER STORM WARNINGS

A strong low pressure system off the U.S. Eastern Seaboard is forecast to pass east of the Avalon Peninsula on Thursday with the threat for significant snowfall, strong northeast winds and reduced visibilities in blowing snow.

"Consider postponing non-essential travel until conditions improve," warns Environment Canada. "Surfaces such as highways, roads, walkways and parking lots may become difficult to navigate due to accumulating snow."

WATCH BELOW: SNOW TIMING FOR NEWFOUNDLAND



TIMING

"With cold air in place, most locations should see only snow through the duration of the event," says The Weather Network's Forecast Centre. 

Heavier snow will develop during the late hours of Thursday and overnight in combination with increasing northerly winds. 

"Snow will diminish in the early hours of Friday as the system quickly pulls away, but lingering light snow and sea effect continues on Friday as even colder air moves in behind the system," the Forecast Centre adds. 

SNOWFALL AMOUNTS

The exact impacts of this storm will, of course, depend on its track, but amounts exceeding 20 cm are possible across the Avalon through Friday morning. Add to that strong winds, with gusts in excess of 70-90 km/h expected, and we're looking at dangerous blizzard conditions developing Thursday evening.

"Given heavy snowfall rates and strong winds, periods of blizzard conditions are possible on Thursday night, with zero visibility and extremely dangerous travel conditions," the Forecast Centre warns. 

SHORT BREAK BEFORE MORE ON THE WAY

Eastern Canada's active storm pattern seems set to continue into mid-December, as yet another storm on the horizon is catching forecasters' attention.

"A clipper will track across the region late Friday and into Saturday with several centimetres of snow expected and more significant snow likely for the Avalon," says Weather Network meteorologist Dr. Doug Gillham. "Sea effect snow squalls are also expected during the weekend." 

Eyes are also on a system next week that will bring a major winter storm to the Southeast U.S. and then track out to sea.

"Computer models keep the storm too far out to sea to have a significant impact on the region, but still warrants watching in case it tracks further to the north (as often happens)," warns Gillham. 

Stay with us here at The Weather Network for the latest on your forecast through the week.

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