16 December, 2013 08:24

A ridge of high pressure will move across the province today as a slight rebound in upper heights allow snow levels to slowly rise over the south. Moisture will become more extensive as a deepening low approaches the coast and flurries will develop inland.
Precipitation rates will peak this evening as the low reaches its maximum depth so expect heavy snow above snow level near the coast. Models are in better agreement now with the handling of this feature. However track of low could have dramatic effects if it is even slightly further south so confidence is fair. At this time low looks like it should be near Smithers by Tuesday morning and by that time should be filling. Heaviest precipitation will be north and east of the low track which is expected to be across the extreme southern Peace district into Tuesday. Although 10 to 15 cm is possible through parts of the Central Interior and the northern Rockies through Tuesday the greatest amount will be through the Pine Pass where up to 25 cm is possible.

Over the south moderate to strong south to southwest flow will allow snow levels to peak near 1000 metres in the interior and 1600 metres closer to the warm front on the coast. However snow levels will drop in the wake of the cold front reaching 600 metres along the coast. Meanwhile moderate amounts of upslope snow are expected in the Coastal mountains and Columbias with light amounts elsewhere.

By Wednesday drier conditions expected as the flow aloft becomes more northerly and airmass dries out so confidence is higher. Weak frontal system moving down the front side of the offshore upper ridge will allow flow to become more northwesterly on Thursday as precipitation spreads over the northwest once again. This system will bring snow to many areas by Friday morning but snow levels will rebound slightly near the coast as the low levels moderate.

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Up ↑

%d bloggers like this: