Fargo 1957 Tornado Upper Air Charts

Upper Air Charts

Here is a series of upper air maps from 20 June 1957 at 6 am CST (12 UTC), and 6PM CST (00 UTC) on 20 June 1957 (around the time of the tornado). The upper air pattern was characterized by a southwest flow aloft, and moisture returning into the northern plains. Images courtesy of Jonathan Finch (NWS).

6 AM CST (12 UTC) 20 JUNE 1957