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CoCoRHS WxTalk Webinar: Atmospheric Rivers (2023 Update)

Atmospheric Rivers (and we saw our share of them last winter) will be the subject of our  "WxTalk Webinar” on Thursday, October 5th. Join us as Marty Ralph, the director of the Center for Western Weather and Water Extremes at UCSD/Scripps Institution of Oceanography in La Jolla, California, takes an in-depth look at this subject. 

Space is limited to the first 500 registrants, so register today! We will notify the first 500 who register of their acceptance to the Webinar. Those who aren't able to attend will be able to watch this episode on-line the following day.


CoCoRaHS WxTalkAtmospheric Rivers (2023 Update)

Date: Thursday, October 5, 2023
Time: 1:00 PM Eastern, Noon Central, 11:00 AM Mountain, 10:00 AM Pacific 

Atmospheric Rivers (AR) are relatively narrow regions in the atmosphere that are responsible for most of the horizontal transport of water vapor outside of the tropics. While ARs come in many shapes and sizes, those that contain the largest amounts of water vapor, the strongest winds, and stall over watersheds vulnerable to flooding, can create extreme rainfall and floods. However, not all ARs cause damage – most are weak, and simply provide beneficial rain or snow that is crucial to water supply.  In fact, they can also be drought busters.

This presentation will provide a brief history of the emergence of understanding of atmospheric rivers as a phenomenon, and as a key factor in precipitation in many regions.  An emphasis will be placed on lessons learned from studies in the Western US, with highlights from the emerging exploration of ARs as important elsewhere.  Efforts to better monitor and predict ARs will also be summarized.