An investigation of the influence of cyclonic airstreams on midwestern snowfall

Although previous climatological studies have investigated the relationship between cyclone frequency and trajectory and regional weather, analyses of structural airflow features and precipitation have been confined to meteor ological case studies. in the following paper, the influence of Colorado cy clone airstreams on Midwestern snowfall is investigated using isentropic st reamline maps for five cold season months. Results indicate that Colorado c yclones account for a minor percentage of, Midwestern snowfall events and a mounts. When snowfall is induced by Colorado cyclogenesis, diffluence and i nstability in the cold sector portions of the cyclone are the dominant lift ing mechanisms.