PORTLAND, Maine • An arctic blast that sent shivers across the Midwest spread to the eastern U.S. on Wednesday, with bitter weather breaking records from Mississippi to Maine.

Cold temperatures that stretched to the Gulf Coast followed a snowstorm that the National Weather Service said contributed to nearly 30% of the country being covered in snow as of Wednesday.

Snowfall, slippery roads and cold temperatures were blamed for more than a half-dozen deaths across the country since Monday.

In the Northeast, temperatures dipped to single digits early Wednesday in some communities.

Forecasters projected even lower temperatures late Wednesday and early Thursday in some locations.

More than 200 records have fallen since Monday, and the number is expected to exceed 300 by the time the cold snap ends, said Patrick Burke, lead forecaster at NOAA’s Weather Prediction Center in College Park, Md.

The temperatures reflect a normal winter weather pattern that broke loose early in the season, unleashing cold air from Arctic Circle, he said.

“This was a wakeup call for a lot of folks in the eastern half of the country,” Burke said, noting that the eastern U.S. had enjoyed warm weather in September and October.

Record low temperatures for the date were recorded Tuesday in New York City; Buffalo, N.Y.; Burlington, Vt.; Augusta, Maine, and parts of Ohio.

More daily records were broken Wednesday morning in Burlington, Augusta, and several locations in Pennsylvania.

To the south, daily records fell Wednesday morning across a large swath of the region accustomed to milder weather.

The temperature dropped to 18 degrees in Birmingham, Ala., early Wednesday, breaking the previous low record of 22 degrees set in 1911.

In Greenville, Miss., the temperature dropped to 17 degrees , breaking a record of 23 degrees set 108 years ago, officials said.

Snow and ice accumulate on the St. Joseph Lighthouses on Wednesday as a storm moves through St. Joseph, Mich.

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