What is the name given to the meteorological phenomenon which is characterized by a strong and persistent flow of atmospheric moisture and associated heavy rainfall from the waters adjacent to the Hawaiian Islands, which resulted in record rainfall at Seatac airport this week.
Pineapple Express Pineapple Express Pineapple Express is a non-technical term for a meteorological phenomenon characterized by a strong and persistent flow of atmospheric moisture and associated with heavy precipitation from the waters adjacent to the Hawaiian Islands and extending to any location along the Pacific coast of North America. A Pineapple Express is an example of an atmospheric river, which is a more general term for such narrow corridors of enhanced water vapor transport at mid-latitudes around the world. A Pineapple Express is driven by a strong, southern branch of the polar jet stream and is marked by the presence of a
Earth rainfall climatology a 16-year interval. Southern Europe experiences a 22-year cycle in rainfall variation. Other smaller term cycles are seen at 10-12 year and 6-7 year periods within the rainfall record. Places with significant impact by acid rain across the continent include most of eastern Europe from Poland northward into Scandinavia. Precipitation across Canada is highest in the mountain ranges in the western portions due to onshore flow bringing Pacific moisture into the mountains, which is subsequently forced to lift up their slopes and deposit significant precipitation, primarily between August and May. Mesoscale convective systems are common mid-summer near the central border