National Weather Service United States Department of Commerce

Heat Wave Continues; Areas of Severe Thunderstorms and Heavy Rain through the Weekend

The prolonged and intense heat wave continues today for portions of the Ohio Valley and Mid-Atlantic, with relief expected by this weekend. There will be daily chances for severe thunderstorms and heavy rainfall in the northern Plains and Upper Midwest today through 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:
 
 
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).