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[April 18, 2011] (AP) More wet, springlike weather is expected in the West on Monday as a Pacific disturbance extends from the northern California coast through the Great Basin.

A cold air mass and zonal flow will aid in producing areas of rain and high-elevation snow showers from northern and central California to the central and northern High Plains. Mostly light to moderate precipitation is expected in these regions. Periods of heavier rain and snow totals are expected near the higher elevations of northern California into the Wasatch mountains of Utah-Idaho, Tetons and central Rockies.

Moist flow across the West will spread into the Midwest, kicking up precipitation from parts of the mid-Mississippi Valley, through northern Illinois and northern Ohio. Cold daytime temperatures will support a light to moderate mix of rain and snow showers in these areas.

Farther east, a low pressure system moving through southeastern Canada will trigger a few light snow showers in northern New England. Strong winds associated with this system will usher a cooler air mass into the Northeast through the beginning of the week, leading to chilly afternoon temperatures.

Finally, high pressure will prevail across the South with fair and dry weather conditions.

Temperatures in the Lower 48 states Sunday ranged from a morning low of 17 degrees at Jamestown, N.D., to a high of 97 degrees at Pecos, Texas.

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[Associated Press article from Weather Underground]