While the cold wave was still ongoing, a storm entered the northwestern United States transporting much warmer and moister air over shallow cold air near the surface.
On November 13, Portland, Oregon recorded .1 to .25 inches (0.25 to 0.64 cm) accumulation of ice.
Other areas in the state recorded additional ice accumulations and one area recorded 1 foot (0.30 m) of snow.
By state, maximum snow totals as high as 33 inches (84 cm) were recorded near Ouray, Colorado, with six other states reporting totals of at least 1 foot (0.30 m).
Several states in the Great Plain region received over 4 inches (10 cm) of snow, and Dallas–Fort Worth reported a trace of snow on November 16 for the first time in 117 years of records.
An Oklahoma Mesonet station in Boise City, Oklahoma recorded a high temperature of 15 °F (−9 °C) on December 12 only two days after recording a high temperature of 81 °F (27 °C).
Snow accumulations of 3 to 4 inches (8 to 10 cm) and greater occurred across western, northern, and central Oklahoma.
On November 13, a total of 0.1 inches (0.3 cm) of snow was recorded in Little Rock, Arkansas, the earliest accumulating snow measured in the area in over 20 years.
Gaylord, Michigan received a record amount of snow for any time of the year, with 29.6 inches (75 cm) from November 18–20.
In Buffalo, New York, significant snowfall occurred during the November 17–21 period, with 88 inches (220 cm) of snow recorded.
While the cold wave was still ongoing, a storm entered the northwestern United States transporting much warmer and moister air over shallow cold air near the surface. On November 13, Portland, Oregon recorded .1 to .25 inches (0.25 to 0.64 cm) accumulation of ice. Other areas in the state recorded additional ice accumulations and one area recorded 1 foot (0.30 m) of snow. By state, maximum snow totals as high as 33 inches (84 cm) were recorded near Ouray, Colorado, with six other states reporting totals of at least 1 foot (0.30 m). Several states in the Great Plain region received over 4 inches (10 cm) of snow, and Dallas–Fort Worth reported a trace of snow on November 16 for the first time in 117 years of records. An Oklahoma Mesonet station in Boise City, Oklahoma recorded a high temperature of 15 °F (−9 °C) on December 12 only two days after recording a high temperature of 81 °F (27 °C). Snow accumulations of 3 to 4 inches (8 to 10 cm) and greater occurred across western, northern, and central Oklahoma. On November 13, a total of 0.1 inches (0.3 cm) of snow was recorded in Little Rock, Arkansas, the earliest accumulating snow measured in the area in over 20 years. Gaylord, Michigan received a record amount of snow for any time of the year, with 29.6 inches (75 cm) from November 18–20. In Buffalo, New York, significant snowfall occurred during the November 17–21 period, with 88 inches (220 cm) of snow recorded.
2014–15 North American winter