A winter storm over the Southern Rockies and Plains was expected to move into the Central U.S. on Wednesday.
A low pressure system was forecast to track over the Southern and Central Plains and stretch into the Mid- and Lower Mississippi River Valley. With cooler conditions to the north, snowfall was expected over the Central Plains and Mid-Mississippi, while the regions along the Gulf could see scattered showers.
The storm also was expected to push the dominating high pressure system eastward and farther into the East Coast and allow the Plains to begin warming up on Wednesday. High temperatures in the upper teens were expected in the Northern Plains, while the Southern Plains could see temperatures return to the 40s and 50s.
The Gulf states were expected to see less than a half inch of rain. Iowa and the Midwest could see up to 3 inches from light and scattered flurries and high temperatures in the mid-20s, though wind chill values could drop to near 10 degrees.
Ahead of the system in the East, high pressure was expected to hover over half of the country from the Great Lakes to the Gulf of Mexico. The system was forecast to pull cool and dry air in from the north and allow for mild weather. Mostly sunny skies were expected with increasing clouds throughout the day. Highs were expected to remain in the 20s and 30s over New England and reach into the 60s in the South.
In the West, a low pressure system off the West Coast was expected to push a moist cold front over the Pacific Northwest and bring scattered snowfall to the Cascades and Intermountain West. Up to 2 inches of snow was expected, and as much as 4 inches could fall in the Sierras, Cascades and Northern Rockies.
On Tuesday, temperatures in the Lower 48 states ranged from a low of negative 22 degrees at Mt. Washington, N.H., to a high of 69 degrees at Kendall, Fla.