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Weather Underground Forecast for Monday, May 04, 2015
A cold front will extend from the Great Lakes to the central Plains on Monday, while a separate cold front will approach the Northwest.
A extensive cold front will stretch across the Great Lakes, the upper Midwest and the central Plains. As warm air streams northward from the Gulf of Mexico, it will collide with this frontal boundary. The result will be numerous areas of showers and thunderstorms over the Northeast, the Great Lakes, the Ohio Valley, the Midwest and the central Plains. There will be a chance of severe thunderstorms over northeast Kansas, southeast Nebraska, northwest Missouri and southwest Iowa. These thunderstorms will be capable of producing large hail, dangerous straight line winds and isolated tornadoes. An area of low pressure will also develop over the southern Plains on Monday. This system will generate strong to severe thunderstorms across the southern Rockies and the southern Plains. Severe thunderstorms will be possible over western Texas and southeast New Mexico. Heavy rain associated with these thunderstorms will bring a threat of flash flooding to portions of eastern New Mexico, western Texas and western Oklahoma. There will also be a slight chance of thunderstorms over the central Gulf Coast and the southern Appalachians, while the remainder of the Southeast will stay mostly clear of precipitation.
Meanwhile, scattered showers and isolated thunderstorms will be possible over the northern Rockies and portions of the Great Basin. A cold front approaching the northwestern corner of the country will bring light to moderate rain to western Washington and northwest Oregon. High pressure will keep conditions relatively calm across California.