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Canada Winter 2015-2016 discussion


Ottawa Blizzard

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Looks like a warm start to December for much of Canada, including southern Ontario. Anthony Farnell of Global TV released his winter forecast yesterday and he's calling for near-record or record warm December for all of Canada. He has below normal snowfall for western Canada stretching eastwards to southern Ontario. Above-normal snowfall along the US east coast into Atlantic Canada.

Despite the warmth, he's forecasting a chilly February for central and eastern Canada. The overall temperature map for DJF looks like 2009-10. Warmest to the west and north and slightly above normal in southern Ontario with below normal reserved for the US east coast.

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Despite El Nino, it can be good.

Patterns don't shift easily. If we can get a cold regime setup, it will lock in regardless of El nino. We just need to get it started.

Keep an eye on the long range models and watch for a deep trough, it will come eventually.

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  • 1 month later...

Downtown Toronto is on the board with its first measurable snowfall of the season. 0.4 cm fell on the 23rd (early morning hours on the 24th). Pearson Airport also recorded 0.4 cm on the 23rd.

Just noticed the East York station is no longer in operation (since the end of July).

 

That sucks. That's the problem with these volunteer obs locations. People die/move/lose interest. Same thing happened with the Burnhamthorpe station.

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Tricky forecast for tomorrow. Regardless of the scenario we will turn to some light rain at some point. But how we get there is the question. EURO/NAM show several hours of PL before the transition. RGEM and especially the GFS would give us quite the front-end thumping of snow before we switch over. SREF mean has been ticking up lately...has YYZ at 2.5" of snow for the mean.

 

Bottom line is we should get on the board for December tomorrow.

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Tricky forecast for tomorrow. Regardless of the scenario we will turn to some light rain at some point. But how we get there is the question. EURO/NAM show several hours of PL before the transition. RGEM and especially the GFS would give us quite the front-end thumping of snow before we switch over. SREF mean has been ticking up lately...has YYZ at 2.5" of snow for the mean.

 

Bottom line is we should get on the board for December tomorrow.

I'm hoping for at least 2"/5cm before the changeover. Ottawa and Montreal look to cash in on this.

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That sucks. That's the problem with these volunteer obs locations. People die/move/lose interest. Same thing happened with the Burnhamthorpe station.

Welcome back, SSC! It's been a tough start to winter in the GTA, but I'm getting thru it. This winter is shaping up to be like 2006-07. Very warm Dec followed by a transition in Jan and cold in Feb. Hopefully we'll get a bit more snow than that winter, but with the track forecasted to be east of us come late Jan/Feb, it'll be a challenge.

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That sucks. That's the problem with these volunteer obs locations. People die/move/lose interest. Same thing happened with the Burnhamthorpe station.

The person who manned the East York station was a retired Environment Canada employee at his private residence, so I'm not surprised operation of the station ended.

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Welcome back, SSC! It's been a tough start to winter in the GTA, but I'm getting thru it. This winter is shaping up to be like 2006-07. Very warm Dec followed by a transition in Jan and cold in Feb. Hopefully we'll get a bit more snow than that winter, but with the track forecasted to be east of us come late Jan/Feb, it'll be a challenge.

 

Thanks. If there's important weather occurring, I'll be around. Not much a forum jockey for the down-times anymore though.

 

NAM still looks like it hangs onto a warm layer above 850mb. Mostly PL again this run although it's trending in the right direction. I'll check BUFKIT when it comes out.

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The high positioning on the NAM is much further east and weaker than the REG. Even with that in mind, theres some +PL/SN although the duration of it is shorter.

 

Third run in a row it's trended colder. I'll take it.

 

Wow, just a trace for the season? I seem to remember a coating back in November. I don't measure imby anymore but I'd have guessed it was around 1cm.

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Surprising because you expect next to nothing for Toronto or because EC is usually behind the proverbial 8 ball when it comes to things like this?

 

More the latter. I was expecting nothing more than a special weather statement with the 3:30 forecast. I think we're in line for several hours of +SN before we switch over to PL.

 

Also, it's fairly far south but I guess the glaze potential in the Sarnia-London area is enough to warrant it.

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Watches

2:18 PM EST Sunday 27 December 2015

Winter storm watch in effect for:

  • City of Toronto

Major winter storm Monday night into Tuesday morning.

A low from Texas will spread snow, ice pellets, and blowing snow into the regions Monday evening. Snow and ice pellet amounts of 10 to 15 cms are expected before precipitation changes to freezing rain early Tuesday. Freezing rain will change to rain or drizzle during the day Tuesday.

Furthermore, strong easterly winds gusting to 70 km/h are expected Monday evening and Monday night with gusts to 80 km/h possible near Lake Ontario.

Travel conditions will rapidly deteriorate Monday evening as visibilities drop to near zero and roads become covered in snow and ice pellets. Significant disruption to travel may persist into Tuesday.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports to #ONStorm.

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Don't think we'll get much ZR in Toronto as the sfc cold will get scoured before the mid-level warmth becomes deep enough to completely melt the snowflakes/pellets.

 

If the front-end thump is mostly pellets, I think we'll walk away with 2-5cm worth. If we can manage to stay snow/mostly snow for the first 3-6 hours of the precip, I don't think half a foot of snow plus is unreasonable. Right now I'll cut the difference and go with 5-10cm of snow/pellets for Toronto before the slot moves in and we go over to light rain.

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Don't think we'll get much ZR in Toronto as the sfc cold will get scoured before the mid-level warmth becomes deep enough to completely melt the snowflakes/pellets.

 

If the front-end thump is mostly pellets, I think we'll walk away with 2-5cm worth. If we can manage to stay snow/mostly snow for the first 3-6 hours of the precip, I don't think half a foot of snow plus is unreasonable. Right now I'll cut the difference and go with 5-10cm of snow/pellets for Toronto before the slot moves in and we go over to light rain.

Good call. I'll go with 10 cm of snow for Toronto, 20-25 cm for Ottawa and Montreal.

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