Things still pretty much look on track for a major blizzard over a large portion of the Canadian Maritimes Wednesday morning into Wednesday evening.
However, due to the very strong circulation of this storm it appears that just enough warming will occur aloft for a change to sleet, freezing rain or rain over the eastern half of Nova Scotia and perhaps over extreme eastern PEI Wednesday evening.
Keep in mind, that even in these areas where there will be a changeover the heaviest precipitation will have already occurred in most cases and that will be in the form of very heavy snow.
Our latest snowfall forecast map
Mixed precipitation or rain in those areas will go back over to lighter snow later Wednesday night as the cold air wraps back into these regions on the back side of the intense storm.
There has been talk about this storm comparing to 'White Juan'. There will certainly be some similarities. However, this storm will not produce nearly the amount of snow that 'White Juan' did due to the fact that 'White Juan' was a slow-mover, while this storm will be moving along, which greatly reduces the duration of heavy snow.
But, this storm will be more intense and likely produce stronger winds compared to 'White Juan' so in addition to the snow, we are very concerned about damaging winds, power outages and coastal flooding, especially near the Bay of Fundy, PEI, Cape Breton and the south coast of Newfoundland.
The worst of the storm in terms of snowfall and drifts will be across southern/eastern New Brunswick, western/northern Nova Scotia and PEI. Some locations in these areas could see locally 60 cm, while the average will be from 30-45 cm.
This storm will likely be remembered for years.
My latest interpretation of the ECMWF forecast model, along with some input from other models and current data.
Some thoughts on the weather pattern into mid-July
Wildfire smoke causing significant problems across Saskatchewan.
Spring-like storm to soak parts of eastern and Atlantic Canada this weekend as the West cooks.
Heat wave for western Canada by the weekend as the East cools down a bit.
Severe weather threat Monday evening/night for Ontario. Building heat wave late this week into next week out West.