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Weather Underground Forecast for Friday, April 25, 2014
A cold frontal boundary will move across the eastern third of the country on Friday, while a separate cold front will extend across the West Coast and the Intermountain West.
A cold frontal boundary will move across the eastern third of the country on Friday, extending from the Gulf Coast to the Ohio Valley. Widespread rain and thunderstorms will accompany this system, which will focus mainly over the Tennessee Valley, the Ohio Valley, the Mid-Atlantic and parts of the Northeast. Heavy snow showers will also develop over the Great Lakes. This cold front will also bring a chance of scattered showers and thunderstorms to the southeastern corner of the country. Just to the west, a ridge of high pressure will build over the central Plains. This will keep conditions across the central third of the country relatively clear on Friday.
Meanwhile, a cold frontal boundary will move east southeastward over the West Coast and the Intermountain West. During the first half of the day, rainy weather will move across Washington, Oregon, California, Nevada and Idaho. Heavy snow showers are expected across the higher elevations, especially in the Sierra Nevadas. Snow accumulations are forecast to range between 6 to 12 inches across the northern tier of the the Sierra Nevadas. During the afternoon and evening, precipitation will shift eastward, bringing a chance of heavy snow showers to the northern Rockies. Temperatures are expected to drop 5 to 10 degrees across the West Coast on Friday.