TransCanada Weather

Strong Squalls Today; Heavy Flurries Reaching Inland -- Our forecast team continues to watch a stiff NW flow that will inundate the typical snow-belts with potentially very potent squalls. The strongest activity will be for Grey-Bruce in Canada, and for the Tug Hill Plateau in the USA.... On the Canadian side, 30cm in the squalls is likely with isolated regions receiving 40-60cm. On the United States' side, up to a whopping 100-150cm is likely! :O For Southern Ontario further inland, many regions can expect a few bursts of flurries ranging from 4-15cm (higher amounts closer to Lake Huron; lower amounts along the 401 and away from the snow-belts). - TCW

[Potent Storm to Impact Great Lakes; Strong Storm for Eastern Ontario] -- Great Lakes: 10-15cm on average Snow-belts (Grey-Bruce, Collingwood, etc): 30cm+ Eastern Ontario: 25-40cm... -- TIMING: Tuesday Overnight but mainly Wednesday (Great Lakes) TIMING: Wednesday PM into Thursday Pre-Dawn (Eastern Ontario) -- Our forecast team is closely monitoring what could be the first widespread appreciable snowfall across the Great Lakes into something we have not seen much of this winter - snow-squalls! For Eastern Ontario, this appears to be a bonafide 25-40cm storm, including areas like Ottawa, Montreal, and Eastern sections of Lake Ontario. Snowsqualls will occur Thursday for the Great Lakes and could be rather intense. Totals from squalls alone (i.e. the 'orange region') will be an additional 30cm+. - TCW

Potential Winter Storm: Great Lakes and Eastern Ontario - Tuesday Night through Wednesday - Amounts: 5-15cm+; Finalized forecast on Tuesday - Strong squalls on the back-end; Grey-Bruce and Collingwood regions ... Our forecast team is closely monitoring a tightly wound low pressure system that will move across Southern Ontario late Tuesday Overnight and through Wednesday. While previous guidance indicated a miss, then a near miss, now, it appears there may be sufficient cold air in place for bursts of heavy snow. At this time it appears widespread 5-15cm is likely although more is possible depending on the location. For squalls, we will narrow down amounts and locations tomorrow. We will have an overall updated forecast tomorrow by noon. - TCW

[Forecast: Ontario and Quebec] -- Our forecast team has been watching a fast-moving system as it targets Ontario and Quebec. Lake Erie Shores: Rain... East of Lake Huron: 2-5cm, Light Frz. Rain, Rain Waterloo-Wellington: 4-8cm, Light Frz. Rain Lake Simcoe Area: 3-6cm West of Lake Ontario + Toronto: 4-8cm North of Lake Ontario: 4-8cm, Lake Enhancement of 8-13cm Eastern Ontario: 6-12cm North Central Ontario (Parry Sound/Britt): 10-15cm Northeastern Ontario: 10-20cm, locally 25cm Wawa through Timmins along Highway 101: 6-15cm Wawa north: 4-8cm Southeastern Quebec: 5-15cm North of St. Lawrence: 20-30cm Central Quebec: 10-20cm Southwestern Quebec: 10-20cm, locally 25cm North Central Quebec: 6-12cm -- We will continue to monitor this system carefully and issue updates as required. - TCW

Something We Haven't Seen Much Of -- We haven't seen a lot of it this Winter but very cold air will engulf much of Ontario and Quebec tonight and tomorrow. For Southern Ontario, temperatures will feel like the -20s with significantly colder conditions further north.... Tomorrow will likely be the coldest day of the year, at-least, thus far! Bundle up! :) - TCW

Eyeing Next Storm for Eastern Canada -- Our forecast team is monitoring a series of impulses from a few Lows that will impact much of Eastern Canada from Southern Ontario through Quebec and into Atlantic Canada. It appears by the end of the weekend, many areas in Southern Ontario could receive roughly 10cm+ while amounts will increase as one travels east. Quebec and the Townships by the weekend will be closer to 20-25cm on average, while many parts of New Brunswick could rece...ive 30cm or more. We will monitor the details closely and issue updates should the situation warrant. This will begin in Southern Ontario later tonight. This could have significant impacts on the commute to work on Thursday. - TCW

http://QUICK UPDATE [Atlantic Canada Storm: Saturday/Sunday] -- System for this weekend across Atlantic Canada will mostly impact extreme Eastern Nova Scotia (mainly East of Halifax), and Cape Breton and Newfoundland. ... Eastern NS + Cape Breton = 25-40cm+; Strong winds Southwest & Western NFLD: 25-40cm+; Strong winds Central & Eastern NFLD: 15-25cm Eastern PEI: 15cm New Brunswick will be largely spared from this storm. Yarmouth to Halifax will also be largely spared from this storm. - TCW #NSStorm #NLwx

[Nova Scotia Snowstorm; Watching Southern Ontario around Feb 5] The snowstorm for this weekend appears to still have relatively high confidence for 20-30cm+ for Nova Scotia, extreme SE New Brunswick, eastern PEI and Cape Breton. Impacts will be much less through interior New Brunswick. Watching closely for Southern Ontario on ~February 5th which could bring 10-20cm and some freezing rain (preliminarily). ... Further updates in the next 24-48h for Nova Scotia. - TCW #ONStorm #NSStorm

**SUBJECT TO CHANGE** [Preliminary Forecast: Atlantic Canada Weekend Storm] -- Our forecast team has briefly compiled a preliminary forecast for Atlantic Canada.... Heaviest Snow Area: 25-35cm+ Moderate Snow Area: 15-25cm Mixing: Along Nova Scotia shore-line. More or less rain may be present depending on track. Newfoundland: Widespread 15-20cm -- We will continue to monitor this system carefully and issue updates as required. Please note that this is a preliminary forecasted. - TCW

[Potential Storm for Nova Scotia/Cape Breton for the Weekend] Our forecast team is monitoring a potential snowstorm that may sink into the Atlantic in the US, quickly strengthen, and swing south of Nova Scotia into PEI. Based on the track, a significant storm of 25cm+ cannot be ruled out for Nova Scotia and Cape Breton with strong winds. For the rest of the Maritimes, impact remains uncertain. ... The timing appears to be late Saturday and through Sunday. We will monitor this system carefully. - TCW

Check-out this image released today from Environment Canada regarding the historic Newfoundland Blizzard not too long ago! Some locations not only experienced nearly 140km/h wind gusts but also near 100cm of snow! :O - TCW... #NLwx

[Something to Watch: Isolated 10cm+ for Southern Ontario Saturday Evening] -- Our forecast team continues to monitor a somewhat weak Low that will approach Southern Ontario with initially rain showers, however, as the Low stalls and eventually phases into a secondary Low well east of Ontario, there may be a swath of moderate snowfall depending on the time of day this happens. Right now, guidance suggests HWY 403 from Brantford/Hamilton to the GTA to Toronto to Ajax/Oshawa reg...ion and north to near Barrie could pick up at-least 10cm of snow. Other areas in Extreme SW Ontario would see rain showers only. -- Our team will monitor this phasing closely and issue updates as the time warrants. - TCW #ONStorm

Check out this incredibly sharp temperature gradient across Alberta. :O Only a relatively short distance marks a difference between +3C to +6C and -17C to -20C! - TCW... *Picture from Kyle Brittain on Twitter