Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

The National Weather Service completed a service assessment for flooding along the Missouri and Souris Rivers that occurred from May through August 2011. The final report of this assessment may be read at:

http://www.weather.gov/media/publications/assessments/Missouri_floods11.pdf

Service assessments are internal reviews of the National Weather Service’s performance during certain Hydrometeorological, oceanographic, and geological events. They identify best practices and areas for product and service improvements in the form of findings and recommendations.

Additional information regarding this and other floods across South Dakota from 1881 to 2019 can be found here, courtesy of the U.S. Corps of Engineers (alternatively here, via the South Dakota State Historical Society).

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Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

NWS Completes Internal Assessment for 2011 Missouri River Flooding