Prévisions météo en montagne

Well, what can I tell you? Life in the wide world of B.C. weather goes on much as it has these past couple days, full of its own comings and goings, devoid of any major weather systems...for which I am very thankful (especially after the atmospheric river early in the week).

The unsettled onshore flow continues with scattered showers and flurries making their way onto the coast. Freezing levels will continue the trend from yesterday and will oh-so-gradually lower during the next 24 hours to sit near 900 metres by Friday morning. Some flurries will make there way into the interior as well. Both the coast and interior will see some sunny breaks in between the showers and flurries.

Moving into Friday we see a Pacific low sweep down from the Gulf of Alaska. The consensus of numerical models are showing the trajectory of the low tracking west of Vancouver Island, making landfall near Portland Oregon. This trajectory of the low means the bulk of the precipitation associated with also sweep southwards of British Columbia.

Once this Friday low goes by we introduce a further shift in the weather pattern. A northerly flow pattern begins with a consensus of numerical models showing a northeasterly flow aloft developing by Sunday morning. Did someone say Arctic air? Yes indeed. Arctic air will begin to advance from the north and penetrate the B.C. interior and coast. Outflow will develop over the north coast on Sunday and strengthen on Monday. Cold and dry conditions will establish themselves over the entire province for the first half of next week.

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The 500 mb animation above is broken. Please see the loop below.

The 500 mb animation above shows an upper low will sweeping down from Gulf of Alaska. Watch the low as it moves into Washington State on Saturday. As we move into the weekend a northerly flow develops with colder air moving into the province.