The Pawnee and Blackwell Mesonet stations are 60 km apart in north-central Oklahoma. Pawnee observed 52 mm rainfall during the events, while Blackwell received none. During the six days following the rainfall events, the average diurnal trends of surface moisture evolved differently at the two sites despite their proximity. At Pawnee, the mixing ratio increased relative to the pre-event period, while at Blackwell, the mixing ratio decreased.
Both the Oklahoma Mesonet and the federal surface observation network captured broad patterns of change in surface moisture from six days before the event to six days after the event. However, the Mesonet captured mesoscale detail during the post-event period that escaped detection by the federal network. The presentation will provide details on how the land and the atmosphere were connected following the rainfall event.