Strong winds will buffet a large portion of eastern and Atlantic Canada into Friday as a potent storm tracks northeastward into western Quebec by Friday afternoon.
Areas directly downwind of the eastern Great Lakes and the Atlantic Ocean will have the strongest winds with the potential for some downed tree limbs and resulting power outages.
We have updated the wind maps from yesterday. I played up the wind for Friday morning from the Bruce Peninsula to the Parry Sound area as the southwest wind will be very strong for several hours coming off the Great Lakes.
The strongest winds in the Maritimes will be Friday afternoon/early evening. For Newfoundland, the strongest winds will occur Friday night.
Western snow potential this weekend
A small, but fairly intense storm will move inland over northwestern Washington state Saturday morning then track east-northeast into southern Alberta and slowly weaken over the weekend.
The latest computer guidance has shifted the track a little more toward the north, which reduces the chance for much in the way of snow in Calgary but increases the chance for Edmonton late Saturday into early Sunday.
There is more consensus that the storm lifts more northeast once it gets into eastern Alberta and Saskatchewan early Sunday, which would likely keep the accumulating snow north of Regina and Saskatoon.
Regardless of the track, there will be some significant snow in Coastal Range of BC and into the ski resorts of the BC and Alberta Rockies Friday night into Saturday night.
There is still some disagreement in the computer modeling in regards to where the mid-level storm center tracks once it gets east of the Rockies and so the main axis of heaviest snow could shift slightly north or south from where we have it now. We may not have a real good idea of the exact track until early Saturday morning as the storm center nears the coast.
South of the storm track, there will be strong winds across coastal Washington state and northwestern Oregon, including the Columbia River valley. There could also be a brief period of strong west winds over extreme southern Alberta and southwest Saskatchewan Saturday night and into the first half of Sunday.
A little snow in the East later in the weekend...
A weak disturbance will track across New England early Sunday, and this may lead to a period of wet, melting snow Saturday night and early Sunday from parts of eastern Ontario/southern Quebec into northern New England and upstate New York. At this point, looks like any accumulation will be in the higher elevations of New York, Quebec and northern New England, but it should be less than 5 cm. Any snow that falls in the valleys will likely melt for the most part.
Have a safe and happy Halloween!
My thoughts the pattern into next week and a look at the weekly model output into early November.
Oho will likely bring hurricane-force wind gusts and heavy rainfall to parts of coastal BC Thursday night into Friday.
Weather pattern clues through the end of October.
Major rainfall event for the Maritimes late tonight, Wednesday and Wednesday night. Heaviest rain headed for central New Brunswick.
Flood potential for portions of the Maritimes midweek.
My latest interpretation of the weekly long range forecast output.