Weather Underground Forecast for Monday, Feb. 03, 2014
A cold frontal boundary will extend across the Gulf of Mexico and over the southeastern U.S. on Monday, while an area of low pressure will skim across the Southwest.
A very active weather system is expected to drive across parts of the central and eastern thirds of the country on Monday. As a warm, muggy air mass from the Gulf of Mexico interacts with a cold front, freezing rain, sleet and snow are forecast to develop over parts of the Tennessee Valley, the Ohio Valley and the Mid-Atlantic. Meanwhile, heavy rain will move across the Southeast, while thunderstorms will be possible over southern Florida.
The central U.S. will stay relatively calm on Monday as high pressure builds over the northern Plains and the upper Midwest. Cold, blustery conditions will sweep across the northern tier of the country, while temperatures are expected to be 15 to 30 degrees below average across the southern Plains and the lower Mississippi Valley.
An area of low pressure will shift over the Southwest on Monday, as light to moderate showers are expected across parts of southern California. High elevation snow showers will also be possible over the southern end of the Sierras, as well as other mountainous regions in southern California. By the end of the day, this system will aid in producing snow showers over the central Rockies. To the north, an onshore flow will allow for wet weather to occur in western Oregon and western Washington, which will translate to snow in the Cascades. This system is expected to shift eastward by the afternoon and evening, bringing snowy weather to the northern Rockies.
Temperatures in the Lower 48 states Sunday have ranged from a morning low of -29 degrees at Bigfork, Minn. to a high of 87 degrees at Immokalee, Fla.