 A deep low pressure system (with a pressure of 977 mbar at its peak) moved across the Pacific Coast on October 15 and then crossed the Rockies during the following day and touched out some moist air from the Gulf of Mexico, a major source for storm development and intensification.Not part of the main outbreak, 3 tornadoes were reported, during the overnight hours of October 16 towards October 17, across Randall County, Texas south of Amarillo on October 16 with one of them confirmed as a high EF1; that tornado caused damage to trees, fences, power poles, steel pipes, trailers, and barns.The next day, a dry line, which separates the drier air from the more moist and humid air, formed ahead of the cold front across the Texas and Oklahoma Panhandles and tracked eastward.