Here’s how an atmospheric river, particularly the powerful Pineapple Express, works and why it can carry so much precipitation.
SEATTLE — What’s an atmospheric river? And how is it related to a Pineapple Express?
As a strong atmospheric river targets the Pacific Northwest, these questions are top of mind, according to the National Weather Service. Some areas have already received upwards or 7 or 8 inches of rain, but those totals are expected to continue to rise in the next 24-48 hours.
What is an atmospheric river?
According to the National Oceanic and Atmospheric Administration (NOAA), atmospheric rivers are “relatively long, narrow regions
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