The Lower Mainland may play host to a proper rainstorm heading into the weekend, although it isn't expected to necessitate a weather warning.
Environment Canada meteorologist Matt Loney tells V.I.A. that the Metro Vancouver weather forecast includes a "mix bag" of conditions over the next 10 days or so, with periods of sunshine and rainfall, and temperatures at times deviating a few degrees cooler than seasonal averages (a high of 20 C and a low of 12 C).
Tuesday, June 17, is expected to be dry for most of the day, reaching a high of around 20 C at Vancouver International Airport (YVR).
"We'll see a few more clouds through the rest of the day," Loney notes, adding that "a weak trough" is expected to move into the area later Tuesday night, provoking some showers.
After the trough moves out of the region, conditions are expected to clear. Thursday is shaping up to be the nicest day of the week, with clear skies, sunshine, and temperatures climbing back to 20 C.
The Metro Vancouver weather forecast includes a storm
An organized system is expected to make its way into the region by Friday, producing upwards of 5 to 10 mm of rainfall.
Loney says Saturday has a "holdover chance of showers" from Friday's storm, and will see cooler temperatures as northwest Pacific flow moves through the region. Temperatures are expected to reach 16 C or 4 C below the seasonal average.
"With a cooler trough on top of us tends to provoke a chance of showers," he explains. "But other than that it isn't very far from ordinary."
Conditions should remain cloudy with some sunny periods on Sunday as temperatures warm to seasonal. However, some instability is expected to remain, producing a chance of showers overnight.
"It looks like another trough could come in mid-next week," he adds. "That will keep the potential for showers associated with any weak systems."
Beach bums shouldn't anticipate a major warm-up anytime soon in the seven-day forecast, although conditions don't "look incredibly dreary," Loney notes.
Travellers headed to the southeastern portion of the province or southern Alberta face different conditions heading into the weekend. Friday's storm will hit these areas much harder with "quite a bit of rain." Loney says the system will be considered a "significant storm" once it reaches these areas.
Drivers should brace for rapidly changing conditions in mountain passes associated with the stormy weather.
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