The location of the_determines how cold it is in the midwestern united states.

The location of the Polar vortex determines how cold it is in the Midwest United States.

Explanation:

According to meteorological scientists, a polar vortex is an area of low pressure and cold air that comes from the poles of the earth.

During winter in the northern areas, the amount of cold that it does at the poles is maximized by sending a stream of cold air currents that expands to the Midwest areas of the United States.

This phenomenon is nothing new, it already happened in 2014 and 2018, lowering the temperatures of the cities to -40 degrees and becoming one of the deadliest colds, getting to know 5 dead in 2018 due to the low temperatures.