As part of the storm splits off and affects the Northeast before heading out to sea, heavy snow will blanket the southern Rockies, while snow and ice develop over part of the South Central states into early next week.
Much to a skiers' delight, cold air flowing westward and southward will cause snow to fall heavily at times over Colorado and spread into portions of Utah and New Mexico. Much of the region has been experiencing well above-average temperatures through the middle of the month.
According to AccuWeather.com Meteorologist Becky Elliott, "Colorado still looks to be the bulls-eye for the highest amounts of snowfall accumulation from this storm."
"Snowfall totals from this storm will reach up to 2.5 feet likely in the mountains," Elliott said.
The storm that began over the Mississippi Valley on Friday is breaking up into several parts and will cause slippery travel and disruptions to daily activities over a large part of the nation.
Snow will spread from the southern Rockies to the Wasatch Range and part of the Sierra Nevada.
The worst travel conditions will be centered on the Interstate 70, I-80 and I-25 corridors.
Meanwhile, warmer air that pushed into part of the southern Plains, Texas and the lower Mississippi Valley will be replaced by another surge of arctic air.
However, rather than a simple push of dry cold air, enough moisture will return to the area to cause a zone of snow, sleet and freezing rain to develop.
The setup will bring slippery roads and travel delays along much of the I-20 corridor in the South Central states.
Several inches of snow to Amarillo and Wichita Falls, Texas.
A glaze of ice from sleet and freezing rain will make for dangerous conditions for motorists and pedestrians from Dallas and Abilene, Texas, to Shreveport, Louisiana, and perhaps Jackson, Mississippi, spanning Sunday into Monday.