Altogether, more than 200 million people were affected, in an area ranging from the Rocky Mountains to the Atlantic Ocean and extending south to include roughly 187 million residents of the Continental United States.
led to the breakdown of the semi-permanent feature across the Arctic known as the polar vortex.
On January 7, 2014, the temperature in Central Park in New York City was 4 °F (−16 °C).
Marstons Mills, Massachusetts bottomed out at −9 °F (−23 °C) on the morning of January 8, just one degree above their record low, as did Pittsburgh, which also bottomed out at −9 °F (−23 °C), setting a new record low on January 6–7.
Cleveland also set a record low on those dates at −11 °F (−24 °C).
The average daily temperature for the United States on January 6 was calculated to be 17.9 °F (−7.8 °C).
The last time the average for the country was below 18 was January 13, 1997; the 17-year gap was the longest on record.
On January 6, 2014, Babbitt, Minnesota was the coldest place in the country at −37 °F (−38 °C).
The cold air reached as far as Dallas, which experienced a low temperature of 16 °F (−9 °C).
On both days, the temperature did not go above −25 °C (−13 °F).
Other parts of southern Manitoba recorded lows of below −40 °C (−40 °F).
During most of the early cold wave, Winnipeg was the coldest major city in Canada.