Starting sometime around mid-December, the effects of La Nina typically start to take hold, modifying the weather patterns of the northeast Pacific.
We are starting to see this now. The major characteristic is an upper-level ridge of high pressure over the eastern Pacific, with cool northerly flow over the West Coast, not unlike seen in the upper-level (500 hPa, about 18,000 ft) map for 1 AM this morning (see below)
My podcast will tell you about this expected pattern, and its implications for our weather this winter. And I will describe how La Ninas can produce warmer than normal conditions over the eastern U.S.
But before I describe all this, I will provide you with the forecast for the next week, which will be cool and wet, with loads of snow in the mountains, and a chance of lowland snow in the Bellingham area.
You can listen to the podcast below or through your favorite podcast server.
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