Author: Jordin Lantos

New Brunswick

[FINAL UPDATE – 04/07 @ 6:15PM] Snowstorm Looms for…


Here we go again – a significant snowstorm for Nova Scotia, Cape Breton and Western Newfoundland. As much as 35cm or locally more in the most impacted regions.

Energy off the East Coast of the USA will be set to sweep off-shore and close to Nova Scotia and Western Newfoundland.

Key Updates as of 04/07 @ 6:15PM

Confidence is quite high that a significant snowstorm will move into the region of Atlantic Canada, and target most of Nova Scotia (including Cape Breton), eastern PEI, and Newfoundland (mainly Western Newfoundland).

Overall snowfall totals for impacted regions (as per our map above) can be expected in a range of 15-25cm. We at TCW expect regions 10-20km inland from the Western Newfoundland shoreline as well as 5-10km inland from the NW Cape Breton shoreline to reach 25-40cm of snow.

New Brunswick will be largely non-impacted from this system.

SW Nova Scotia will experience a snow/rain mix.

Central Newfoundland will experience a mix of snow and prolonged light freezing rain, while eastern Newfoundland will experience a wet snow/rain/light freezing rain mix.

**Note: There is some potential some localized regions in south-central and central Newfoundland (roughly 20km N/NW of Burgeo and extending to Grand-Falls-Windsor, to receive around 10-15cm of snow as well as 8-15mm of freezing rain). Elsewhere, light freezing rain risks exists, but the accretion will be half or less than the aforementioned accretion.

Saturday
Conditions can colloquially be phrased as “calm before the storm”, with relatively calm conditions.
Conditions will begin to slowly deteriorate for SW Nova Scotia very late Saturday Night.

Sunday
Conditions will deteriorate through much of Nova Scotia by the pre-dawn.
Conditions will deteriorate through much of PEI and Cape Breton by the afternoon.

Sunday Evening (6pm MST)
Conditions should improve (progressively) for most of the Maritimes and conditions will deteriorate across Newfoundland.

Monday
Conditions will slowly improve all-together for the Maritimes.

Tuesday
Conditions will slowly improve all-together for Newfoundland.

Watch for gusty winds and local blowing snow.

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

Drive safe and always be alert during hazardous conditions.

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

Ontario

More Snow on the Way; Big Pattern Change Coming


More snow is set to sweep through most of Ontario Thursday Night into Friday, with the heaviest accumulations near Lake Erie and the traditional 401 corridor, including several major cities.

The tempestuous conditions that recently caused headaches across Southern Ontario bringing thunderstorms, heavy lake-effect flurries and winds will be superseded by further accumulating snow one more time this year.

The recent Colorado Low led to several accidents, including a closure on WB 401 near Kitchener-Waterloo and a significant 50 car pile-up on HWY 400 near Barrie.

The two images below show the hazardous conditions on HWY 400 near Barrie today, Wednesday, April 4th.

Thursday Night
Conditions will deteriorate somewhat from west to east and snow will engulf much of the aforementioned regions bringing a widespread swath of 2-4cm, with heavier amounts near the traditional 401, 402, 403 and QEW corridors.
Watch for slight SW enhancement off Lake Erie providing potentially, slightly increased amounts near the St. Thomas-London-Woodstock-Brantford corridors, with particularly higher confidence around the St. Thomas-London corridor.

Friday Morning
Conditions will slowly begin to improve by early morning from west to east.

The Warmup? Where is it?
A pattern change is set to change weather across Eastern Canada through the 3rd and 4th week of April and thereafter, particularly into early May.

Conditions will drastically and exponentially warm to the low to mid to eventually, upper teens in May.

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

Drive safe and always be alert during hazardous conditions.

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

New Brunswick

April Snow Brings May Flowers? Hmm…


The feisty Colorado Low inevitably set to move into Ontario will impact Quebec, the Maritimes and Newfoundland with mostly snow [of varying intensities], Wednesday PM into Thursday PM – lingering until Friday AM.

Snow and Ice

Beginning late Wednesday, snow will quickly spread across Quebec and bring alongside, heavy accumulating snow, particularly for the Northeastern Quebec Suburbs where 30cm or more could potentially fall. For Quebec City, 20-30cm is probable.

For New Brunswick, there will be a drastic and sharp transition line between heavy snow, freezing rain and rain. Currently, regions around the Bathurst region SW of a line to just south of Edmundston could receive significant freezing rain (10-15mm), thereby an inverse relationship will form: higher ice accretion, and lower snow accumulations. Elsewhere across New Brunswick, snowfall amounts will become significantly reduced the further south one travels (and higher probability of rain).

Across Newfoundland, light snow will encompass much of the province, however, there is reasonable certainty sea-effect enhancement will provide further snowfall for regions such as Corner Brook and Stephenville.

Rain

Nova Scotia, most of PEI, Cape Breton and parts of New Brunswick will experience rain. For most regions, the rain will be a non-factor, however, Southern and South-Central regions of New Brunswick, could receive 30-45mm of Rain, locally near 50mm.

Widespread gusty winds will be a noteworthy concern.

When will the cold relinquish?
As recently predicted and outlined in our Spring/Summer forecast, it is [and we expect] Spring to be relatively cool across much of Eastern Canada with above normal precipitation. However, we do believe more moderating temperatures will begin to enter the Eastern half of the country beginning very late April, and more prominently into early May.

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

Ontario

[UPDATED 04/03/2018] Intense April Storm: Snow, Thunderstorms and Powerful…


An incoming system will bring a mixed-bag of wet snow, heavy accumulating snow, rain and thunderstorms across Southern, Central, Eastern and Northern Ontario, as well as, Quebec.

Tuesday
Through the overnight Monday, an arctic front will descend south coalescing with a strengthening area of low-pressure tracking through the Midwest United States. Temperatures will be falling across Northeastern Ontario, the Nickel Belt, Manitoulin Island, and, the Bruce Peninsula with the passage of the cold front. Light snowfall will begin in the aforementioned regions overnight Monday into Tuesday. Continuing through the day Tuesday – lasting into Wednesday. Total accumulation will range from 15-25cm by Wednesday evening.

Tuesday Thunderstorm and Rainfall Risk: Southwestern Ontario
An associated warm front looks to be staying south of Lake Erie Tuesday afternoon, lessening the arrival of a warmer airmass into extreme Southwestern Ontario. Nevertheless, the track of the low will bring rainfall and embedded thunderstorms ahead of a cold front Tuesday evening. Primary threats include embedded heavy downpours, and gusty winds to 60-80km/h.

A cloudy and wet day is expected cross Southern Ontario. Generally, 15-25mm of rainfall is expected across a large swath of Southern and Eastern Ontario. Locally higher amounts of 20-40mm is expected in extreme Southwest Ontario (with local thunderstorms) and a parts of Eastern Ontario.

Wednesday
The strengthening area of low-pressure will continue on a north-east trajectory towards Quebec Wednesday. The passage of the low will be accompanied by colder air and powerful wind gusts across Southern Ontario. Gusts between 70-90km are expected Wednesday.

Residual snowfall will continue in parts of Northeast Ontario. Some Lake effect flurries may impact the snow-belts.

What’s to come?
Cold temperatures will continue through the first week of April, with continuing below seasonal temperatures through the 2nd and 3rd week of April. There is some confidence continued snow-systems will embed themselves across the region, with the potential for snow reaching as far south as the 401 corridor.

When will the cold relinquish?
As recently predicted and outlined in our Spring/Summer forecast, it is [and we expect] Spring to be relatively cool across much of Eastern Canada with above normal precipitation. However, we do believe more moderating temperatures will begin to enter the Eastern half of the country beginning very late April, and more prominently into early May.

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

Ontario

When Will it End? Early April Chill to Bring…


An early April chill will allow colder air from Northern Canada to funnel into much of the continent of North American and provide one residual and last remnant shot of winter; significant accumulating snow April 4th (Night) through April 5th is likely, especially for some regions.

We have prepared a risk map outlining the potential for significant snow (deemed in this case a minimum of 5cm or more), across Southern, Eastern, Central and Northern Ontario, as well as parts of Southern Quebec and the Townships.

At this point, it seems most of the coldest air should remain north of the 401, alongside the higher moisture content; most of the heaviest snow will reside around Cottage Country and near Lake Superior/Northern Ontario.

At this time, the 401 corridor with the exception of regions near Lake Erie, can except a swath of 5-10cm, while regions north of the 401 (and Quebec) can expect 8-12cm, locally 15cm, and regions in Cottage Country, Northern Ontario and Lake Superior region can expect 15-20cm+.

Inevitable = >90%
Very High Chance = 80%+
High Chance = 70%+
Moderate Chance = 50%+
Slight Chance = 30%+
Minimal Chance = 10%+

When will the cold relinquish?
As recently predicted and outlined in our Spring/Summer forecast, it is [and we expect] Spring to be relatively cool across much of Eastern Canada with above normal precipitation. However, we do believe more moderating temperatures will begin to enter the Eastern half of the country beginning very late April, and more prominently into early May.

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

Alberta

Canada Spring and Summer Highlights: Summer to Arrive; Will…



Canada’s Summer Highlights; Spring Temperatures and Spring Precipitation Forecast: From TransCanada Weather

Through careful analysis of ocean temperatures, atmospheric patterns and continental, national and global temperatures, we have formulated and depicted our predictions across the country for Spring and Summer 2018.

Spring

Atlantic Canada
A relatively active storm track across the entire region as listed, will provide ample opportunities for a mixed bag of precipitation for eastern sections, with snow for western sections through late March into early April.

Parts of New Brunswick, PEI, Western Nova Scotia, Western Newfoundland and most of Labrador can expect opportunities for snow.

Temperatures will be below seasonal, particularly through early April and slowly begin to moderate from late April into May for all of Atlantic Canada.

Ontario and Quebec
A relatively active storm track will also be present particularly from late March into early April. Opportunities for snow exist, however, temperatures will likely be slightly too mild for significant snow accumulations. However, below seasonal temperatures and slightly above precipitation are expected until mid April.

Temperatures will begin to moderate particularly later in April and seasonal weather will become more prevalent and consistent in May.

Prairies
The Prairies will continue to remain fairly seasonal this spring with dry conditions at times, particularly later in spring; average precipitation early in the spring.

British Columbia
Much of British Columbia will experience warm surges of Pacific air with an inundation at times, of moisture from Pacific low pressure systems.

Northern Territories
The NWT are expected to be seasonal and dry for much of April and May.

Summer

Atlantic Canada
An active storm track at times will provide for soaking rains and isolated severe thunderstorms at times, throughout the summer. This summer will be fairly consistently warm across the entire region with periods of hot and humid weather.

Summer will arrive, but some time will be required.

It is expected that warmth will begin to build into late June through July and August.

Ontario and Quebec
An active storm track will provide surges of heat across the region, particularly in late June through August. Severe weather will make visits at times this summer, however, it is expected the early portion of summer will remain somewhat dry, and slightly cool, with active and a widespread severe risk building from late July into August.

There is reasonable certainty that June will provide some bouts of cooler and drier weather relative to the norm.

Prairies
The Prairies will receive a typical summer; warm with periods of stiffing temperatures, severe thunderstorms and large hail and isolated tornadic risks, particularly across Alberta and Saskatchewan.

British Columbia
British Columbia is expected to be slightly cooler this summer, although not exceptionally cool. Surges of hot and dry weather that typically show through July-September may be somewhat limited this summer, although not non-existent.

Its not all bad news for the BC coast as moisture is expected to be to the north and south.

Northern Territories
The NWT are expected to be seasonal and dry for much of June, July and August.

https://twitter.com/TransCANWeather

– TCW

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.
https://twitter.com/TransCANWeather

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

Ontario

[UPDATED] Waves of Snow for Southern Ontario; Slippery Conditions


Waves of light to moderate snow to inundate Southern Ontario from Wednesday into the weekend.

The remnants of the Prairie snowstorm from recent days has further disintegrated and become stagnant over Southern Ontario. Concurrently, moisture off Lake Huron will aid in a localized snowfall event for much of Southwestern Ontario.

Snow will be somewhat scattered and inconsistent in nature, however, due to the duration, locally slippery conditions are likely. Especially for the Sarnia to London corridor continuing north to encompass everywhere east of Lake Huron. Due to lake enhancement, regions particularly just east of Lake Huron – likely just south of the city of Goderich itself – will be the most impacted.

Totals depicted are over the course of several days with minimal impacts in South-Central Ontario and the Golden Horseshoe/GTA. Flurries with trace amounts to a few centimetres of accumulation is expected.

The heaviest accumulations will be confined to Southwestern Ontario and parts Eastern Ontario where several day totals could be 10-20cm. Actual accumulation will be less considering melting and settling.

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

Manitoba

[UPDATED] Intense Snowstorm for Saskatchewan and Manitoba; >1.5 Feet+…

Past Updates:

Blizzard for the Prairies. (Revision #1)

 

Blizzard for the Prairies. (Revision #2)

 

Blizzard for the Prairies. (Revision #3)

A fierce snowstorm will approach the Canadian Border Sunday and linger until Tuesday across Saskatchewan and Manitoba: especially South-Central SK and MB.

A strong low pressure system originating from Colorado will move close to the aforementioned regions and intensify rapidly.

‘Colorado Lows’ are notorious for bringing intense blizzard conditions to the upper Dakotas and into the Prairies, however, they also pose a significant challenge to forecast as a slight directional change can alter the conditions dramatically.

Conditions will rapidly deteriorate Sunday PM, with heavy snow occurring in the time-frame of Sunday into Monday.

Blowing snow will be of considerable concern (through Tuesday), particularly for the South-Central SK/MB region.

Depending on the final track of the ‘Colorado Low’ some ice-pellets or freezing rain may certainly mix in, as the low may get pulled more Northeastwards bringing a slight warm sector, atmospherically, into several regions.

Updated Information: 03/04/2018 @ 10:30AM

Significant snowfall to target a large swath near the SK/MB border where over 1 foot is likely. Higher elevations, although localized, could approach 2 feet.

Ice pellets and freezing rain are expected to mix with snow in Southern Manitoba and Southern Saskatchewan near the immediate Canadian/USA border, thereby limiting overall accumulations.

Dry air will also be plentiful in some regions of Southern Manitoba, therefore a few regions will likely ‘underachieve’ and may receive 10-15cm rather than 15-25cm.

Winnipeg will receive roughly 15cm of snow +/- 2-5cm. More snow will be present W and NW of the city.

It is important to remain vigilant in regards to this significant snowstorm, especially in what has been a relatively ‘quiet’ winter season across much the Prairies.

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

Drive safe and always be alert during winter conditions.

Avoid all unnecessary travel across heavily impacted regions as whiteout conditions will become inevitable.

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