My first year as a postdoc was spent at the National Severe Storms Laboratory, working with David Stensrud and Dave Turner. Our interest here was trying to determine how much impact a network of instruments providing temperature, humidity, and winds would have on numerical weather prediction. We are performing a pair of Observing Systems Simulation Experiments (OSSEs), the first being a wintertime storm modeled on a heavy precipitation event in the Mississippi Valley in early January 2008, and the second a springtime convective storm, designed to emulate the May 24, 2011 severe weather outbreak in Texas, Oklahoma and Kansas.