Meteorological Synopsis
On April 2, a low pressure system was situated over the Texas and Oklahoma panhandles with a warm front stretching into central Arkansas and a cold front stretching into western Texas east of El Paso, Lubbock, and Amarillo. Temperatures on that day reached the 70s in northern Texas with dewpoints in the upper 60s to near 70 degrees Fahrenheit. A strong upper level jet, abundant instability in the atmosphere, and substantial wind shear provided additional fuel for the development of supercellular storms across the region.
Read more about this topic: April 1957 Dallas Tornado Outbreak