A SYNOPTIC CLIMATOLOGY OF TEXAS WINTER STORMS

Between the years of 1948 and 2005, 50 winter storms with snow and sleet accumulations of four inches or more affected the northern and central portions of the state of Texas. The upper level flow pattern of each storm case was examined and classified into one of six synoptic types. Additionally, geopotential height, moisture, and temperature anomalies associated with each case were studied in order to find quantitative similarities that may be used for operational forecasting. Results indicate that each synoptic regime possesses unique thermal and moisture profiles. Winter storms which exhibit characteristics similar to those presented here may be easier to forecast after one identifies the synoptic type. Characteristics of each synoptic pattern are discussed in detail to allow maximum application in the operational forecast setting.