Taste of summer nears southern B.C. after cool, wet weather
Tuesday, May 16, 2017, 8:10 PM - Mild spring weather has been difficult to come by this year in southern B.C., but change is on the horizon.
A warming trend develops this week that will finally bring a taste of summer and an extended period of dry weather, which will continue all the way through next week and into the Victoria Day long weekend.
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Before the warmth arrives however, we have one last system to deal with, as an upper level trough brings below normal temperatures, unsettled weather, and more late-season snow for higher elevations. The snow will wind down Tuesday night into Wednesday.
The feature responsible for the cool, wet start to the week is an upper level low-pressure center, one of a pair tracking onshore into western North America early this week.
Blocking provided by a stout ridge east of the Mississippi will make it difficult for these systems to progress eastward, so instead they will meld into a broad trough that will linger over the interior western U.S. through the week.
By late this week the core of the upper trough will settle into the Four Corners, taking the cool air with it, as a strengthening ridge over the Gulf of Alaska brings the beginning of a gradual warming trend to B.C. This developing feature will help to reinforce the warm and dry conditions that will begin to spread across the region.
As we head through the week and into the weekend, residents of southern B.C. will finally see the arrival of persistent warm and dry conditions. Warmth builds in for coastal locations like Vancouver and Victoria, as well as across the interior for places like Kelowna.
The arrival of early summer-like weather will be very welcome news, after the extended period of cool and wet conditions that has dominated the spring so far. The warmup is expected to last through next week and beyond, delivering an enviable forecast for the Victoria Day long weekend across southern British Columbia.