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A winter weather advisory is in effect for York County through 2 a.m. Sunday, Feb. 18.

According to the National Weather Service, an area of low pressure will develop with the potential of a wintry precipitation mix and accumulating snowfall from portions of the mid-Atlantic to southern New England Saturday into Sunday.

The southwest portion of the state will see snow by mid-afternoon, which will continue through midnight Saturday, National Weather Service meteorologist David Martin confirmed.

It will be a "very fast-moving storm," he said.

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More: 3-4 inches of snow likely Saturday in York

More: 3 to 6 inches of snow possible for York County Saturday

AccuWeather meteorologist Adam Douty reports the advisory will go into effect at 4 p.m. Saturday, Feb. 17.

The snow could mix with rain at the onset, which should occur between 3 and 5 p.m., he added.

It should quickly turn to snow after that, he said, continuing heavily from evening through night with an accumulation of 3-6 inches.

Martin predicts 3-4 inches for the Susquehanna Valley. Most areas will have close to 4 inches, he said, with 3½ closer to the Maryland border.

The next day will be much warmer, with temperatures in the mid-40s. Martin said Sunday would be a sunny 45 degrees.

"By the time you wake up tomorrow morning, snow will be long gone," Douty said. Snowfall will end sometime in the middle of the night, and Sunday will bring a high of 47 degrees.

More: PHOTOS: Cold weather around the country

Douty said the change in temperature could make the roads slick early Sunday morning as the snow melts, but by mid-morning traffic should be able to operate normally.

Cold fronts from the northwest will come in again on Monday and Wednesday, Martin said, but temperatures will remain above freezing through late in the week. He expects temperatures on Tuesday and Wednesday to rise close to 70 degrees.

Douty agrees that the county could see record-high temperatures by Tuesday and Wednesday, possibly reaching the lower 70s. 

A cold front coming through Wednesday will cool things down by Thursday, but with a high of 74 degrees Wednesday, temperatures will only drop to the 50s.

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