Item: Flood fight : the "pineapple express", rain on snow and flooding in western washington
Title: Flood fight : the "pineapple express", rain on snow and flooding in western washington
Proceedings: Proceedings Whistler 2008 International Snow Science Workshop September 21-27, 2008
Authors: Mr. Larry Schick.
Abstract: Major flood risk, in Western Washington, typically begins with an evolving "Pineapple Express" pattern offshore, aimed at the Pacific Northwest. The strongest are frequently responsible for extreme precipitation along the West Coast of North America, causing severe flooding and related storm events. These warm, moist "atmospheric rivers" (ARs) sometimes tap abundant tropical moisture and are responsible for intense rainfall, often with rain on snow in the mountain head waters of many basins. A better understanding of ARs is important to forecasters, emergency and water management professionals to determine potential impacts of these events. This study describes their impact on major flooding in Western Washington including the nature of infrequent, minor non AR flood events and details of very large AR floods.
Presenters: Mr. Larry Schick.
Keywords: flooding, pineapple express, western washington, atmospheric river