Since 2001, real-time one-minute data have been available from about 25 stations of the Louisiana Agriclimatic Information System (LAIS) managed by Louisiana State University. Jackson State University is currently in initial phases of developing a similar mesonet within Mississippi, building upon the experiences of LAIS. Approximately 100 stations are planned, with spacing and standards specifically intended for consistency with the NWS Modernized Coop Observing System. Example data will be shown of cases where one-minute meteorological observations have been crucial for describing events from the Mississippi and Louisiana mesonets.