Tag: Nor’easter

New Brunswick

Mixed Precipitation for Eastern Canada & First Appreciable Snowfall…

A system developing in the Southeastern United States will track up the Eastern Seaboard this weekend, becoming a weather story across Eastern Canada.

SYNOPSIS:

A developing coastal system will bring a wintery mix across Southern Ontario, Quebec, and Northern New Brunswick. 

A boundary will form in Southern Ontario between a cold & dry high-pressure system, and moist air arriving from the Southeast. Colder air will overspread Southern Ontario and Southern Quebec Saturday, owing to a cold Northeasterly wind. Concurrently, a large area of precipitation will push north into Southern Quebec and Southern Ontario.

Snow, mixing, rain and freezing rain is expected from Saturday morning to Sunday evening. Flurries will continue through Monday.

Across, Nova Scotia, PEI and much of New Brunswick will see primarily rain. Although, Northern New Brunswick could remain as a mix or snow depending on the track of the developing system.

WPC forecasted fronts & precipitation types. Valid Friday evening.

SOUTHERN ONTARIO:

Many residents East of Highway 6 and across the GTA have started the day with moderate wet snow.

A cold northeasterly wind will reinforce colder air by Saturday evening. Mixing or rain-showers will transition into a wintery mix of wet snow & ice pellets east of Highway 6, along/north of highway 407/7. Continuing through much of Central and Eastern Ontario (away from the lake shore). A few wet centimetres is possible. Especially for municipalities at higher elevation South and East of Georgian Bay. Please plan accordingly, as conditions will deteriorate through the day Saturday.

MARITIMES: Strong Winds & Heavy Rainfall

This system will be a rain and wind story across much of the Maritimes. The strongest winds, with gusts between 80-90km/h, will be located across the Bay of Fundy. Elsewhere winds across much of Nova Scotia, PEI and New Brunswick are expected to be gusting between 50-70km/h Sunday morning. Total rainfall amounts between 20-50mm is expected by Sunday afternoon. The heaviest rain falling in Southern New Brunswick and coastal Nova Scotia. Across Northern New Brunswick, a period of snow and mixing may persist into the overnight. 

Forecast precipitation type & accumulation.

QUEBEC:

Flurries will begin north of the St. Lawrence Saturday evening. Montreal, and the Eastern Townships will likely changeover to rain late Saturday evening/overnight, with the arrival of warmer air. 

For regions north of the St. Lawrence, this will be a snow and ice story. Stay tuned to further forecasts Saturday night through Sunday morning, this region could see a 5-8 hour window for freezing rain.

Model depiction showing precipitation types late-evening Saturday, continuing overnight.


New Brunswick

Here We Go Again: Another Nor’easter

Another Nor’easter Targets the Maritimes Thursday; Late Thursday through Friday for Newfoundland.

A relentless parade of Nor’easters continue to track into the aforementioned regions. While amounts will not be entirely substantial due to slightly warmer surface and upper atmospheric temperatures, amounts will still threaten commute and travel times.

The low pressure system will approach from the southwest bringing alongside a widespread swath of snow, however, transitions to rain/wet snow and/or ice pellets will encompass much of the shoreline of Nova Scotia, thereby likely limiting snow.

The heaviest snowfall accumulations will reside in SE New Brunswick and NW Nova Scotia, and PEI, through Thursday; for Newfoundland, the heaviest snow will reside in western sections.

Depending on the exact [and final] track of the Nor’easter, amounts may vary from the listed depictions +/- 5cm.

Please stay tuned, as we at TCW are monitoring this situation attentively.

Drive safe and always be alert during winter conditions.

For hourly and live storm updates around the clock, follow us on Twitter.
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New Brunswick

Powerful Nor’easter Looms for the Maritimes; Tempestuous Conditions Inevitable


Past Updates

Nor’easter for the Maritimes.

Significant snowstorm will impact the Maritimes once again: Tuesday and Wednesday time-frame.

A low pressure system moving near the Eastern Seaboard of the United States will target the Maritimes this upcoming work-week. Current indications are now such that a significant snowstorm is probable, particularly for much of New Brunswick and especially the NE corridor of the province.

High confidence exists that this storm will produce a widespread swath of 20-30cm+ across New Brunswick, with slightly lesser amounts along the Bay of Fundy shoreline. Additionally, due to a surge of milder Atlantic air, a mix of snow/rain will lead to less significant amounts for coastal regions of Nova Scotia, Eastern PEI and most of Cape Breton.

While temperatures will be slightly mild at the surface and @ 925mb, further upper atmospheric temperatures are still quite chilly, therefore there is almost a nil chance of freezing rain/ice-pellets.

Subsequently, ‘dry air’ is non-existent in this case at the surface, and moisture will indeed remain high.

Snow ratios will not be exceptionally high, however, based on the current track of the low pressure system, surface temperatures will remain slightly cooler across Eastern and Northeastern New Brunswick, thereby allowing for higher totals than their surrounding counterparts.

Watch for gusty winds/localized blowing snow for Eastern and Northeastern sections of New Brunswick up to 75km/h. Elsewhere, gusts up to 65km/h is probable.

While snow will be somewhat limited, watch for very strong wind gusts for Nova Scotia near the coast up to 110km/h.

Updated Information: March 13th, 2018 @ 7:00PM ADT

Nor’easter continues to loom for much of the Maritime provinces. High confidence still exists for a significant impact.

Current indications support particularly major impact for Eastern and Northeastern sections (especially) of New Brunswick where 30-40cm of snow could accumulate.

The track of the low will now move more-so slightly off-shore, rather than ‘hug’ the Eastern Seaboard of the USA, thereby allowing for further intensification; milder air will infiltrate the immediate Nova Scotia coast-line, thereby limiting snowfall amounts.

There is some level of confidence that regions along the Greenwood-Kentville (NS) corridor could now receive 15-20cm instead of the 8-15cm as previously posted. However, because confidence is not entirely high we have decided to only inform individuals, rather than updating our map.

Highest confidence continues to exist for NE New Brunswick receiving the highest impact from this system (particularly just N and NW of Moncton, through Bathurst).

Heavy snow will somewhat blanket coastal regions of Nova Scotia initially, however, it is important to note that a transition to rain will occur. While snowfall may total 10-15cm across coastal regions of Nova Scotia, it will melt quickly through the Pre-Dawn and the morning of Wednesday (March 14th).

Continue to return to this post every hour as updated information will be released as the event draws near.

Please stay tuned, as we at TCW are monitoring this situation attentively.

Drive safe and always be alert during winter conditions.

For hourly and live storm updates around the clock, follow us on Twitter.
https://twitter.com/TransCANWeather

Nova Scotia

Powerful Winds; Fierce Waves for Southern Nova Scotia

A broad area of low pressure is forecast to coalesce into a powerful coastal low through Friday. A new low pressure center will develop near Cape Cod this morning, intensifying into an expansive coastal wind storm.

Strong north-easterly winds will intensify throughout Friday.

Along the Atlantic coastline adjoining Queens to Shelburne county, wind gusts ranging between 90-100 km/h are expected by Friday evening. Elsewhere, along the coast from Halifax to Yarmouth, peak wind gusts of 80 to 90km/h are expected. Winds should diminish through the day Saturday, as the low translates south-east.

At this point in time, it appears any heavy rainfall associated with this system will remain off shore.

Pounding surf, fierce waves & higher than usual water

Coastal communities expanding across Southern Nova Scotia from Halifax to Yarmouth (including Lunenburg), can expect wave heights between 5 and 6 meters Friday and Saturday. On Saturday morning, high waves and pounding surf are forecast to creep north – encompassing the remainder of the eastern Nova Scotia coastline. Higher than usual water levels are expected to coincide with high tide both Friday and Saturday, raising coastal flood concerns.

Environment Canada Issues Wind Warnings and Special Weather Statements ahead of the storm.

The weather agency noted on Thursday that “astronomical high tides will be running high during this period of elevated water levels adding to a risk of coastal flooding”.

For hourly and live storm updates around the clock, follow us on Twitter.
https://twitter.com/TransCANWeather