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Severe winter storm rages in the Maritimes until Sunday

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A powerful storm is sweeping across the Atlantic in Canada and will continue to cause dangerous conditions throughout the Maritimes overnight into Sunday.

Heavy snow is expected in much of New Brunswick, while further south warmer temperatures in Nova Scotia are causing heavy rainfall and even a period of freezing rain is possible in the Bay of Fundy.

Maritimes Sunday morning precipitationMaritimes Sunday morning precipitation

Maritimes Sunday morning precipitation

Winds will pick up overnight into Sunday, with gusts of up to 100 km/h, as well as snow, ice and wet ground, increasing the risk of power outages. Make sure your devices are charged.

Residents are advised to avoid the roads unless absolutely necessary. If travel is unavoidable, use extreme caution, be prepared for road closures, and check road conditions along your route.

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Saturday to Sunday: Heavy snow and rain spread across the Maritimes

Heavy rainfall spread throughout the Maritimes on Saturday as a powerful storm rolled up the coast.

Cold air over the northern Maritime provinces causes snow to be the only precipitation in much of New Brunswick, while warmer air flowing in from the sea causes rain and mixed precipitation in Nova Scotia and the Bay of Fundy.

Total snowfall in the MaritimesTotal snowfall in the Maritimes

Total snowfall in the Maritimes

Snowfall rates may approach 4 cm per hour overnight for northern and central New Brunswick. Motorists should avoid Highways 8, 107 and 108 throughout the province overnight.

A wide strip 30-40+ cm snow The hardest hit areas of New Brunswick will see freezing rain through Sunday, including Fredericton, where this storm alone is expected to drop nearly a month's worth of snow.

Maritime freezing rainMaritime freezing rain

Maritime freezing rain

Some warmer air moving ashore could cause icing and ice formation south of Fredericton and north of Saint John. A period of icing and mixed precipitation will move south to Saint John on Sunday morning as temperatures drop.

The precipitation will turn back to snow before gradually easing by Sunday.

Motorists are urged to plan ahead and adapt to deteriorating road conditions. The heavy, wet snow and icy conditions could also increase the risk of power outages.

Maritime wind gustsMaritime wind gusts

Maritime wind gusts

Wind gusts of up to 60 mph are possible Sunday morning as the core of the storm moves through the region. This increases the risk of power outages, particularly due to the weight of snow and ice on tree branches and power lines. Rain-soaked ground makes it easier for trees to fall in the stormy conditions.

Rain will pose the greatest threat to communities in southern New Brunswick and much of Nova Scotia. Rainfall amounts will increase through Sunday morning, with a brief period of mixed precipitation expected as the system moves away from the Maritimes.

Precipitation in the MaritimesPrecipitation in the Maritimes

Precipitation in the Maritimes

40-60 mm of rain is expected in southwestern New Brunswick, with Nova Scotia expecting area-wide totals of 30-50 mm by the end of the storm. Localized flooding is possible in low-lying and vulnerable areas.

Behind this system, conditions will calm down until the beginning of the week, with active weather possible again from midweek.

Stay with The Weather Network for the latest weather forecasts for Atlantic Canada.

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