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Associated Press

Posted on April 9, 2014 at 4:35 AM

Updated Wednesday, Apr 9 at 4:35 AM

Weather Underground Forecast for Wednesday, April 09, 2014

A cold frontal boundary will continue to move away from the East Coast on Wednesday, while a low pressure system will push across the Intermountain West.

Active weather is expected to wind down across the eastern third of the country by Wednesday. As a cold frontal boundary moves eastward away from the Eastern Seaboard, an area of low pressure will drift slowly behind it. This system will bring a chance of scattered showers to the Southeast, the Tennessee Valley and the Mid-Atlantic. The Northeast will stay clear of precipitation.

Just to the west, a high pressure system will build over the southern Plains. Conditions will be relatively clear and warm from Texas to the Mississippi Valley. A separate ridge of high pressure over the eastern Pacific will continue to bring warm, dry weather to the Southwest and the Four Corners region. Temperatures will range between the 90s and 100s across the Desert Southwest on Wednesday.

Meanwhile, a cold frontal boundary will trek across the Pacific Northwest, the Intermountain West and the northern Plains. Temperatures are expected to drop 5 to 10 degrees behind the cold front, while light to moderate precipitation will accompany the frontal boundary. Scattered snow showers are expected across the Cascades and the northern Rockies, while light rain will be possible in Oregon, Washington, Idaho, Montana and North Dakota.

Temperatures in the Lower 48 states Tuesday have ranged from a morning low of 16 degrees at Yellowstone, Wyo. to a high of 91 degrees at West Palm Beach, Fla.

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