The lower 48 U.S. states will be feeling arctic air as the remnants of Tropical Storm Nuri begin to push on through Alaska and Canada after blasting the Aleutian Islands with strong winds and high seas over the weekend.
Reuters reported the National Weather Service as having issued hurricane warnings for the extreme western Aleutian Islands, storm warnings for the Aleutians farther east and gale warnings even farther east in the Bering Sea.
As the storm moves inland it will force colder arctic air in Canada to stream south, said Jeff Osiensky, a meteorologist with the Alaska region of the weather service.
"This storm is going to be responsible for some changes in the weather pattern which will allow that cold air to move into the lower 48," he said.
"It's very significant, in that the central pressure is very low. It's a very well-developed storm system, it's basically taking remnants of that tropical storm and you've got all the energy and moisture associated with that," said Osiensky.
Heavy snow and plunging temperatures are expected to hit the Upper Midwest this week, dropping as much as a foot of snow on the region and pushing thermometer readings down by as much as 40 degrees overnight, The Associated Press reported. The powerful storm, which will be coursing into the area from Alaska, will likely bring the first major snowfall of the season.
The National Weather Service is warning that a ribbon of wet, frigid weather that pelted parts of Montana and the Dakotas with up to 3 inches of snow on Sunday will also crawl into Minnesota and Wisconsin early Monday. The plunging temperatures are expected to linger, in some places dropping by as much as 40 degrees in a single day.
In Great Falls, Montana, the high temperature is predicted to be 17 degrees on Tuesday, compared with the normal high of 43 degrees. The forecast for Sioux Falls, South Dakota, is a high of 25, which is about 20 degrees below normal. High temperatures in Minneapolis will only reach the upper 20s.
"We're kind of getting locked in winter's grip here," said Troy Kleffmen, a National Weather Service meteorologist in Aberdeen, South Dakota.
Residents in Minnesota should also prepare for between 8 inches and 12 inches of snow. Kleffmen said northern South Dakota and southern North Dakota would probably get the brunt of the bad weather in the region.
National Weather Service meteorologist Gino Izzi in Chicago warned that city will be hit by wintry weather sooner than usual too. Izzi said highs are expected to settle into the 30s from Tuesday through Friday, while nightly lows could drop into the 20s, perhaps even the teens.
"It doesn't look real promising for a warmup after that, either," he said of the longer-range forecast.
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