USDA's Joint Ag Weather Facility says on the Plains, snow — heaviest in parts of Nebraska and South Dakota — is slowly ending from west to east. Meanwhile, cool air in the wake of a cold front’s passage is overspreading the central and southern High Plains.
In the West, snow showers are mostly confined to the Rockies, USDA reports. Cold, dry weather covers the remainder of the West and frost or freeze warnings are in effect early today in parts of southern Arizona and the inland valleys of southern California. Meanwhile, assessments continue regarding the effects of the recent deluge on southern California’s lingering drought issues, such as low reservoir levels and groundwater shortages.
In the Corn Belt, USDA says a storm system crossing the Mississippi Valley is producing wet snow in parts of the upper Midwest. South of the storm’s track, mild weather prevails across the southern Corn Belt. Fields and feedlots remain muddy in parts of the Midwest due to mild weather, unfrozen soils and recent precipitation.
In the South, warm weather prevails in advance of a cold front, USDA notes. A few rain showers are developing in the vicinity of the front, which is approaching the lower Mississippi Valley.
In its five-day outlook through Jan. 29, USDA says a low-pressure system currently crossing the upper Mississippi Valley will drift east-northeastward, reaching the New England coast late Thursday. Snow will fall north of the storm’s track, while rain showers will develop across the eastern U.S. Cooler air in the storm’s wake will result in snow showers, continuing through the weekend, downwind of the Great Lakes. Much of the remainder of the U.S. will experience tranquil weather for the remainder of the week. However, very cold conditions will persist in the western U.S., where freezes could reach deep into the Southwest.