When It Rains, It Pours! An Exploration of Heavy Rain Events in Anchorage, AK

Wednesday, December 20, 2017 at 11:00 AM AKST
Emily Niebuhr, NOAA NWS

A wide range of processes contribute to heavy precipitation events in Anchorage Alaska. Atmospheric Rivers may stream moisture-rich air northward from the tropics which is released along the steep coastal terrain of the Chugach Mountains, or moisture may be recirculated locally in intense convection. The most intense rainfall events in Anchorage are heavily linked to mesoscale processes ranging from orographic lift, gap wind convergence and mountain waves.  In this talk, I will explore the importance of these processes in inducing some of the heaviest 24 hour rainfall events reported at the Anchorage Airport. In addition, I will explore the accuracy and ability of high resolution models to capture these events and associated processes. 

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