This is the blog for the United States' national forecast. These summaries are by Weather Underground forecasters and are updated twice each day.
By: nationalsummary , 8:37 AM GMT on May 05, 2014
Weather Underground Forecast for Monday, May 05, 2014
A cold frontal boundary will move across the northwestern corner of the country on Monday, while a separate cold front will extend from the central Plains to the Mid-Atlantic.
A cold front will move east southeastward across the Northwest on Monday. During the first half of the day, this system is expected to bring moderate to heavy rain to Washington, Oregon and northern California, while heavy snow will occur along western facing mountain slopes across the Cascades. As this system drifts southeastward, rain will spread across parts of central California and the Great Basin, while heavy snow will shift over the northern Rockies. Lower elevations across the upper Intermountain West will have a chance of rain and thunderstorms. High pressure will remain in place over the Four Corners, keeping the Desert Southwest clear of wet weather on Monday.
A separate frontal boundary will extend from the central Plains to the Mid-Atlantic. A swath of rain and thunderstorms is forecast to develop over the upper Midwest, the Ohio Valley and the Mid-Atlantic. The southern Plains, the Gulf Coast and the Southeast will experience warm, dry conditions as high pressure builds over the Gulf of Mexico.
An area of low pressure will drift over the Northeast on Monday, as rainy weather is expected across Upstate New York and New England.
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