La Nina returns for the third year in a row this winter. Going back to 1950, three consecutive La Ninas occurred only one other time, in the mid-1970s.
La Nina is when sea surface temperatures in the Eastern Pacific tropical waters – the waters west of Peru, are cooler than average. Those cooler waters adjust weather patterns in the tropics and are reflected in the mid-latitudes by adjusting the Pacific storm track.
Cascades see first snowfall of the season
La Nina winters tend to have the storm track spend more time at our latitude in the Pacific Northwest versus say, California. As a result, our region usually has a
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