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[March 25, 2011] (AP) More wet weather is expected across the western U.S. on Friday, while the East will see a mild day.

Hardware A series of low pressure systems continues trekking through the West, from the coast to the Rocky Mountains. The system pushes a cold front over the Intermountain West and into the Great Basin. At the same time, another trough leads this system eastward, which reaches off the central Rockies, into the central and southern Plains.

Another 6 inches of snow is expected across the Sierras, with up to 10 inches above 7,000 feet, while the mountains in Utah and Colorado will only see 2 to 4 inches of new snow. The leading system will kick up light rain showers across the Plains, with light snow in the northern Plains and upper Midwest as high temperatures remain in the 30s.

Thunderstorms may develop ahead of this system as it pulls moisture and additional energy in from the Gulf of Mexico. If storms develop, they will be contained to the lower Mississippi River Valley and Gulf states.

In the North, a ridge of high pressure builds over the Great Lakes and Northeast as a low pressure system moves eastward and into the Atlantic Ocean. This brings dry and pleasant spring weather to spread over the northeastern U.S. A few patchy clouds are expected, with highs ranging in the 40s and 50s from the Midwest, up the Ohio River Valley and into New England.

Temperatures in the Lower 48 states Thursday ranged from a morning low of minus 7 degrees at Longville, Minn., to a high of 90 degrees at Laredo, Texas.

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[Associated Press article from Weather Underground]