An in-situ based climatology (1950-2002) of tropical cyclone rainfall for the Eastern United States is presented. Rainfall data were collected from a subset of the National Weather Service’s Cooperative Observing Network. The climatology was created through the use of a simple partitioning scheme that for each observing station, separated rainfall into tropical cyclone and non-tropical cyclone induced rainfall. Ratios of tropical cyclone rainfall to total rainfall and ratios of extreme tropical cyclone rainfall to total rainfall are presented for each station. In addition, these and other climatological statistics were stratified by ENSO mode (cold, warm, neutral), and results are presented that depict relative comparisons among the three phases with regard to median and intense (95th percentile value of storm total rainfall per tropical cyclone event) rainfall.