That too is just the beginning. On Tuesday and Wednesday the thermometer dips 30 to 40 degrees above normal, and a strong high pressure system begins to spread arctic winds to the south and east.
Many cities will see a strong polar decline in 48-hour intervals.
Denver will go from high temperatures on Sunday in the 60s to a high on Tuesday the 15th with snowfall.
Rapid City, South Dakota will drop from a high of 50 degrees to 0 degrees on Sunday. By Tuesday night, it will be below minus 15 degrees in the Black Hills.
Some cities will experience a sharp drop in temperature in just 24 hours.
In Amarillo, TX, Monday’s highs will be in the high 70s, but drop quickly to the mid 30s a day later.
Wichita, KS, will drop further, dropping from a high near 70 on Monday to the mid-20s on Tuesday.
Over the next week, more than 70% of Americans in the lower 48 states will experience freezing temperatures. More than 15 million will endure sub-zero temperatures.
Since such a cold temperature already exists, any moisture that moves the ice is spread over a wide area.
Intense cold meets long snow
Snow will start to fall in the upper Midwest, but since the cold region is not moving very fast, it will allow for significant snowfall rates throughout the region.
By Tuesday, snow, rain and sleet will blanket the Great Lakes, where significant snow accumulation is possible.
Through Tuesday, about 6 inches of snow is forecast across the Northern Plains and Midwest, but more than 12 inches can be seen in some areas.
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The slow movement of the system in the southern part of the storm due to heavy rains is also a cause for concern.
The southeast will receive heavy rain on Monday and Tuesday.
The south is one of the few areas that will manage average temperatures on Monday, which could serve as fuel for severe storms.
The Ark-La-Tex region and the lower and central Mississippi Valley will experience possible hurricanes, major hail and wind damage Monday afternoon through Monday night.
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