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Associated Press

Posted on October 18, 2013 at 3:35 AM

Updated Friday, Oct 18 at 3:37 AM

Weather Underground Forecast for Friday, October 18, 2013.

A ridge of high pressure is expected to build over the Pacific Northwest on Friday, while a cold front will bring snow to the central Rockies and northern Plains.

A stationary front will stretch from the Gulf Coast to the Northeast on Friday, as plenty of showers and thunderstorms will accompany the front. Strong thunderstorms will impact a handful of states along the Gulf Coast and Southeast, including Texas, Louisiana, Mississippi, Alabama, Florida, Georgia, and South Carolina. The southern and central Appalachians will avoid precipitation, while the Northeast will experience showers throughout the day.

Meanwhile, a cold frontal boundary will stretch from the central Rockies to the upper Midwest on Friday, as slightly cooler weather will accompany this system. Light snow showers will be possible in the central Rockies and northern Plains during the morning, and snow showers will also be possible in the upper Midwest during the afternoon. Rain will occur in the central Plains and upper Mississippi Valley as well. The Intermountain West may experience mixed precipitation early Friday morning, but conditions will clear up by midday.

A high pressure system is expected to build over the Pacific Northwest throughout the day as cool, dry conditions will persist in the region. Warmer conditions can be expected in the Southwest, as the southern California and Arizona deserts can expect temperatures in the upper 80s and lower 90s.

Temperatures in the Lower 48 states Thursday have ranged from a morning low of 14 degrees at Monarch Pass, Colo. to a high of 90 degrees at Tampa Macdill AFB, Fla.

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