White Easter possible in parts of Atlantic Canada from next messy low

Digital Writers
·3 min read
White Easter possible in parts of Atlantic Canada from next messy low
White Easter possible in parts of Atlantic Canada from next messy low

The unrelenting atmospheric river will continue to flow through Atlantic Canada this weekend. Heavy rain from the first low has left most of the region, hanging on in eastern Nova Scotia and southwestern Newfoundland, possibly into Sunday morning. Along with the rain, northern sections of the former region is experiencing a considerable bout of freezing rain, with Environment Canada warning of significant ice buildup as a result. Once the low departs, another marches in for Sunday morning, with more wintry impacts that could make for a white Easter in parts of the Maritimes. More on the timing and impact of the two systems, below.

WEATHER HIGHLIGHTS:

  • Heavy rain has tapered for most of the region, but continuing for Cape Breton and southwestern Newfoundland Saturday

  • 50-75+ mm for parts of Nova Scotia, particularly Cape Breton

  • Threat for unsettled weather for the eastern Maritimes and into Newfoundland during the weekend and through early next week

SATURDAY: RAIN HANGS ON FOR SOME, FREEZING RAIN, TOO

The persistent rains that have been soaking the region since Thursday have diminished for much of the Maritimes, which was all due to a low-pressure system that nearly stalled over the region, boosted by Gulf moisture that was defined as an atmospheric river.

As of Friday night, some parts of the region have picked up 30-50 mm of rain, with parts of New Brunswick exceeding 60 mm and one or locales in Nova Scotia with close to that tally.

raintotals
raintotals

Eastern parts of Nova Scotia are still dealing with the unrelenting rain through Saturday, possibly lasting even into Sunday morning. While the heaviest rainall may be behind the region, accumulative totals of 50-75+mm are anticipated by the time it eases off.

Rainfall warnings are still in place, with Environment Canada warning that heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible.

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ATLLRRain
ATLLRRain

Meanwhile, northern Nova Scotia is dealing with a bout of freezing rain, with warnings in place. Significant ice accretion is expected due to the freezing rain amounts, according to Environment Canada. The freezing rain will change to rain Sunday morning.

Newfoundland's southwestern sections is also still being impacted by the rainfall Saturday, with accumulative totals of 30-50 mm not out of the question by Sunday morning. The rain will subside in the overnight hours.

The reason for those extreme amounts is a blocking pattern that has essentially kept this system from moving on. Thus stalled, it's having a longer-than-normal opportunity to discharge that prodigious moisture on the region.

WATCHING THE THREAT FOR A WHITE EASTER

That very strong blocking pattern over the North Atlantic will endure beyond Saturday, and forecasters are already eyeing the next system's impact on the region.

That system, a secondary low, looks to bring wet snow and gusty winds beginning early Sunday to the Maritimes, continuing through early Monday.

ATLSnow
ATLSnow

Some wet snow is expected for New Brunswick, northern parts of Nova Scotia and P.E.I. on Easter with widespread totals of 5-10+ cm possible. The precipitation looks to stay as mostly rain elsewhere, with totals of 25-50+ mm likely, but locally 50-100+ mm for parts of central and eastern Nova Scotia, P.E.I. and eastern Quebec.

Periods of rain are expected for Newfoundland Monday through Thursday, and possibly beyond, with the easterly flow off of the Atlantic.

Be sure to check back for updates on the moisture-filled system for Atlantic Canada.