Heavy Snow for British Columbia:

Southern British Columbia has been hit with a few storms since late last week, including a strong storm on Saturday that produced nearly 45 cm (18 inches) at Whistler-Blackcomb. Interior ranges of BC have received good snow over the past week as well, and this trend looks to continue heading into mid-November.

Forecast for Mon (Nov 13) to Tue (Nov 14):

A storm will impact the Northwest with heavy snow for parts of BC and Alaska, while the Cascades and Northern Rockies will see lighter snow showers. Across the East, a weak disturbance moving in from the northwest will bring light snow showers to New England.

Forecast for Wed (Nov 16) to Thu (Nov 17):

A weaker storm will move across Canada and the Northern U.S. Rockies with light to moderate snow for most areas from BC to Wyoming. Heavy snow can be expected further north across Southeast Alaska.

Meanwhile, an area of low pressure spinning off of the California coast will spread some moisture into the Far Western U.S. with showers developing across California and possibly spreading into Nevada and Oregon. High snow levels are expected with a warmer airmass in place.

Forecast for Fri (Nov 18) to Sat (Nov 19):

Confidence decreases in the pattern across the Western U.S. late this week as the storm located off the California coast eventually makes landfall and moves inland, weakening as it does so. Depending on the timing and storm track, parts of the Sierra and Southern Rockies could see snow during this period.

Further north, an active storm track will continue across Alaska and Western Canada with heavy snow possible.

A storm will also move across the East during this period but mostly rain is expected at this point. The higher elevations of New England could potentially see a change-over to snow toward the tail end of the storm late Saturday, but confidence is low. 

Outlook for Sun (Nov 19) to Thu (Nov 23):

A colder airmass is expected to take hold across the West in the days leading up to Thanksgiving, and the storm door is also expected to open across the Western U.S. The Northwest and Northern Rockies appear to be best positioned to see storms in this pattern, but we'll be keeping an eye on the Sierra and the Central Rockies (Utah and Colorado) as well. 

Across the East, a warmer and wetter pattern is expected overall with rain being the dominant precipitation type, though it's possible some snow could mix in at times across the higher terrain. 

Thanks so much for reading! Next update on Wednesday (November 15).

Alan Smith