Eastern ND and Northwest MN Weather History

The Weather History for July 19th

Interstate 94 derecho or extreme wind event moved through Fargo then down interstate 94 and went all the way to Chicago. 114mph wind gust at Alexandria, MN.
7 F0 tornadoes and 1 F1 tornado moved through Minnesota. These tornadoes are called landspout tornadoes since they spin up from the ground instead of descending from a supercell. A local casestudy was done by the NWS office in Grand Forks, and the paper is located at http://www.crh.noaa.gov/fgf/science/CaseStudy/19980720Tornado/Tech_Attachment.pdf

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