There's a saying in medicine: You're not dead until you're warm and dead. Turns out it applies to cats, too.
The polar vortex was raging in the Midwest last week, and temperatures had dropped below zero on the morning of Jan. 31 in the city of Kalispell, Mont., near Glacier National Park. A cat named Fluffy — a northwest Montana native and usually confident outdoor cat — got into some trouble.
Fluffy's owners, who did not want to be named, found her covered in thick chunks of ice and snow near their northwest Montana home last week. They scooped her up and immediately drove her to the vet, which is probably what saved her life.
"She was frozen," said Andrea Dutter, executive director of the Animal Clinic of Kalispell. It wasn't a rock-solid kind of frozen. But her body temperature was below what the clinic's thermometers could read - 90 degrees. A cat's normal internal body temperature is 101 degrees.
"We immediately began to warm her up," Dutter said. "Warm water heating pads, hot towels . . . within an hour she started grumbling at us."
This Jan. 31, 2019 photo provided by The Animal Clinic of Kalispell shows a cat, Fluffy, being treated at the clinic in Kalispell, Mont. Veterinarians in Montana revived the cat that nearly froze to death after being found in a snowbank covered from head to tail in ice and snow.
Fluffy is an indoor-outdoor cat that knows her surroundings well, Dutter said. Once she was thawed, the veterinarians discovered that the cat had suffered from an injury that prevented her from getting back to the house, though by the time Fluffy reached the clinic, being frozen was Fluffy's primary issue.
Exactly one week later, Fluffy is warm and thriving, and she isn't planning anymore outdoor adventures.
Photos: More than 100 images from last week's deep freeze across America
Illinois Winter Weather
"Sun dog" light phenomena are seen in the sky over Carol Stream, Ill. on Thursday, Jan. 31, 2019. The cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (Bev Horne/Daily Herald via AP)
Illinois Winter Weather
Steam is backlit by the sunrise along a road in Roselle, Ill. on Thursday, Jan. 31, 2019. The cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (Bev Horne/Daily Herald via AP)
Illinois Winter Weather
Steam rises from the Fox River in St. Charles, Ill. on Thursday, Jan. 31, 2019. The cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (Brian Hill/Daily Herald via AP)
Winter Weather New York
Pedestrians pass a frozen water fountain at Bryant Park Thursday, Jan. 31, 2019, in New York. The polar vortex that brought many cities to a standstill was expected to come to a swift end with a rapid thaw that experts say could be unprecedented. But the sudden swing from long johns to short sleeves could create problems of its own. (AP Photo/Frank Franklin II)
Winter Weather Iowa
Canada geese wade in the unfrozen waters of the Bee Branch near 16th Street in Dubuque, Iowa Thursday, Jan. 31, 2019. Temperatures at 8:30 am were -22 degrees in downtown Dubuque, Iowa, Thursday, Jan. 31, 2019. (Dave Kettering/Telegraph Herald via AP)
Winter Weather Iowa
Exhaust from traffic freezes in the cold morning air along Dodge Street in Dubuque, Iowa, Thursday, Jan. 31, 2019. (Dave Kettering/Telegraph Herald via AP)
Winter Weather Pennsylvania
A statue of former Scranton Times co-publisher and editor Edward J. Lynett sits on snow covered bench reading his newspaper on Thursday, Jan. 31, 2019, in downtown Scranton, Pa. ( Butch Comegys / The Scranton Times-Tribune via AP)
Winter Weather Pennsylvania
A pedestrian is covered in his winter wardrobe while walking on Franklin Avenue on a brutally cold Thursday, Jan. 31, 2019, in downtown Scranton, Pa. (Butch Comegys/The Times-Tribune via AP)
Winter Weather Michigan
A pedestrian and dog make their way through blowing and drifting snow along Lake Boulevard in St. Joseph, Mich., Thursday, Jan. 31, 2019. (Don Campbell/The Herald-Palladium via AP)
Winter Weather Michigan
Snow and ice accumulate outside the Maud Preston Palenske Memorial Library in St. Joseph, Mich., on Thursday, Jan. 31, 2019. Many area businesses, including the library, have been closed the last couple of days due to weather conditions. (Don Campbell/The Herald-Palladium via AP)
Winter Weather Michigan
A vehicle remains buried in snow in downtown Benton Harbor, Mich., Thursday Jan. 31, 2019, as drivers are forced to deal with blowing and drifting snow, as well as sub-zero temperatures. (Don Campbell/The Herald-Palladium via AP)
Winter Weather Michigan
Snow coats a building along Main Street in downtown Benton Harbor, Mich., Thursday, Jan. 31, 2019. Southwest Michigan residents continue to deal with blowing and drifting snow, as well as subzero temperatures on Thursday. (Don Campbell/The Herald-Palladium via AP)
Winter Weather
Iowa snow sculptor Hugh McCarron works on a block of snow as his eye lashes and eye brows freeze over in Lake Geneva, Wis., Thursday, Jan. 31, 2019. He's participating in the U.S. National Snow Sculpting Championship. Each team gets a cylinder of snow 8 feet across and 9 feet high, to carve with saws, axes, files, scaffolding, shovels and other homemade implements. The entries will be judged Saturday on creativity, technique and message. Competitors choose the winner. (AP Photo/Carrie Antlfinger)
Winter Weather Niagara Falls
Ice and snow paints the trees next to the American Falls seen from Niagara Falls, Ontario, Canada Thursday, Jan. 31, 2019. (Tara Walton/The Canadian Press via AP)
Winter Weather Niagara Falls
Ice covers the observation deck at the base of Horseshoe falls in Niagara Falls, Ontario, Canada Thursday, Jan. 31, 2019. (Tara Walton/The Canadian Press via AP)
Winter Weather Niagara Falls
A visitor photographs the ice covered Horseshoe Falls in Niagara Falls, Ontario, Canada Thursday, Jan. 31, 2019. (Tara Walton/The Canadian Press via AP)
APTOPIX Winter Weather Niagara Falls
Ice and water flows over the brink of the Horseshoe Falls in Niagara Falls, Ontario, Canada Thursday, Jan. 31, 2019. (Tara Walton/The Canadian Press via AP)
Winter Weather Niagara Falls
Ice and water flows over the brink of the Horseshoe Falls in Niagara Falls, Ontario, Canada Thursday, Jan. 31, 2019. (Tara Walton/The Canadian Press via AP)
Winter Weather Niagara Falls
Ice covers the observation deck at the base of Horseshoe falls in Niagara Falls, Ontario, Canada Thursday, Jan. 31, 2019. (Tara Walton/The Canadian Press via AP)
Winter Weather
Ice crystals create a pattern on a window in Detroit, Thursday, Jan. 31, 2019. The painfully cold weather system that put much of the Midwest into a historic deep freeze is expected to ease. But temperatures still tumbled to record lows early Thursday. (AP Photo/Paul Sancya)
Winter Weather
Icicles hang from the Harrington Inn in Geneva, Ill., as commuters pass by on Thursday, Jan. 31, 2019. The cold weather system holding much of the Midwest in a historic deep freeze sent temperatures plunging to a record low in northern Illinois on Thursday. (Jeff Knox/Daily Herald via AP)
Winter Weather Michigan
A concentrated patch of sunlight, known as a sun dog, appears to the left and right of the sun over downtown Kalamazoo, Mich. on Thursday, Jan. 31, 2019. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (Joel Bissell/Kalamazoo Gazette via AP)
Winter Weather Massachusetts
A man bundles up against the cold in Pittsfield, Mass., with temperatures hovering near minus 5 degrees on Thursday, Jan. 31, 2019. (Stephanie Zollshan/The Berkshire Eagle via AP)
Winter Weather
The sun rises along the shore of Lake Michigan at Montrose Harbor, Thursday, Jan. 31, 2019, in Chicago. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (AP Photo/Kiichiro Sato)
Winter Weather
The sun rises behind trees along the shore of Lake Michigan at Montrose Harbor, Thursday, Jan. 31, 2019, in Chicago. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (AP Photo/Kiichiro Sato)
APTOPIX Winter Weather
Photographers set up tripods along the shore of Lake Michigan before sunrise, Thursday, Jan. 31, 2019, in Chicago. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (AP Photo/Kiichiro Sato)
APTOPIX Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Thursday, Jan. 31, 2019, in Chicago. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (AP Photo/Kiichiro Sato)
Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Thursday, Jan. 31, 2019, in Chicago. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (AP Photo/Kiichiro Sato)
Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Thursday, Jan. 31, 2019, in Chicago. The painfully cold weather system that put much of the Midwest into a historic deep freeze was expected to ease Thursday, though temperatures still tumbled to record lows in some places. (AP Photo/Kiichiro Sato)
Winter Weather
A St. Paul firefighter works at the scene of a house fire during a arctic deep freeze on Wednesday, Jan. 30, 2019, In St. Paul, Minn. (David Joles/Star Tribune via AP)
Winter Weather Illinois
Ice forms on the eyelashes of Aubreyanne Edwards, of Rock Island, Ill., as she braves minus 27 windchill while walking to The Fort Armstrong apartments Wednesday, Jan. 30, 2019, in Rock Island, Ill. A blast of polar air enveloped much of the Midwest on Wednesday, cracking train rails, breaking water pipes and straining electrical systems across the Rust Belt with some of the lowest temperatures in a generation. (Todd Mizener/The Dispatch - The Rock Island Argus via AP)
Winter Weather Illinois
A robin forages for berries as the air temperature measures minus 20 Wednesday, Jan. 30, 2019, in Coal Valley, Ill. A blast of polar air enveloped much of the Midwest on Wednesday, cracking train rails, breaking water pipes and straining electrical systems across the Rust Belt with some of the lowest temperatures in a generation. (Todd Mizener/The Dispatch - The Rock Island Argus via AP)
Winter Weather Illinois
In this Tuesday, Jan. 29, 2019 photo, Shannon Lynn, of East Moline, Ill., covers her face to keep warm while she waits for the bus at the corner of 5th Street and 17th Avenue in Easy Moline, Ill. Lynn had to brave the bitter cold temperatures for a doctor's appoint and a trip to the grocery store. (Todd Mizener/The Dispatch - The Rock Island Argus via AP)
Winter Weather Illinois
Ice forms along the shore of Lake Michigan at the Lighthouse Park in Evanston, Ill., Wednesday, Jan. 30, 2019. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Nam Y. Huh)
Winter Weather Chicago
A harbor light is covered by snow and ice on the Lake Michigan at 39th Street Harbor, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Nam Y. Huh)
Winter Weather
A harbor light is covered by snow and ice on the Lake Michigan at 39th Street Harbor, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Nam Y. Huh)
Winter Weather Minnesota
A bubble freezes on the end of the wand Wednesday, Jan. 30, 2019, in Mankato, Minn. A blast of polar air enveloped much of the Midwest on Wednesday, cracking train rails, breaking water pipes and straining electrical systems with some of the lowest temperatures in a generation. (Pat Christman/The Free Press via AP)
Winter Weather Chicago
People enjoy at the Lake Michigan at 31st Street Harbor, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Nam Y. Huh)
Winter Weather Chicago
A harbor light is covered by snow and ice on the Lake Michigan at 39th Street Harbor, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Nam Y. Huh)
APTOPIX Winter Weather
A harbor light is covered with snow and ice on the Lake Michigan at 39th Street Harbor, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Nam Y. Huh)
Winter Weather North Dakota
Bismarck city snow crews remove snow in the minus 33 degree temperature from Avenue E and Second Street near St. Mary's Central High School Wednesday, Jan. 30, 2019, in Bismarck, N.D. (Tom Stromme/The Bismarck Tribune via AP)
Winter Weather Missouri
With a nod to the upcoming thaw, bundled pedestrians pass the SSM Health physical therapy offices on Locust Street as temperatures hovered in the single digits on Wednesday, Jan. 30, 2019. Frigid conditions were forecast to improve on Thursday and temperatures were expected to reach 60 this weekend. (Robert Cohen/St. Louis Post-Dispatch via AP)
Winter Weather New Jersey
James Dusenbery blows a dusting snow off the sidewalk in Englewood, N.J., Wednesday, Jan. 30, 2019. The National Weather Service issued blizzard warnings for sections of upstate New York on Wednesday and officials urged people to stay inside as heavy, wind-driven snow caused whiteout conditions amid subzero windchills. (AP Photo/Seth Wenig)
Winter Weather West Virginia
A City of Charleston worker uses a tractor to sweep snow from the sidewalk on the Lee Street bridge over the Elk River in Charleston, W.V. Wednesday, Jan. 30, 2019. (Chris Dorst/Charleston Gazette-Mail via AP)
Winter Weather Wisconsin
Icicles hang in front of a door at a bar in Mequon, Wis. Wednesday, Jan. 30, 2019 as temperatures were sub-zero and wind chills were -50 degrees. (AP Photo/Jeffrey Phelps)
Winter Weather Wisconsin
A young boy tosses a chunck of snow into Lake Michigan Wednesday, Jan. 30, 2019 in Milwaukee. Temperatures were sub-zero and wind chills were -50 degrees. (AP Photo/Jeffrey Phelps)
Winter Weather Vermont
Walter Hagedorn, owner of Sensation Productions and chief project coordinator for The Love Sheep Project, uses a remote control for a miniaturized snow-blowing vehicle as his sheep ride on the back while clearing snow at the Retreat Meadows, Wednesday, Jan. 30, 2019, in Brattleboro, Vt. The Love Sheep is a social art project created by Hagedorn. (Kristopher Radder/The Brattleboro Reformer via AP)
Winter Weather
A teenage boy snaps images with his smartphone near an area covered in ice at the Great Falls National Historic Park, Wednesday, Jan. 30, 2019, in Paterson, N.J. A fast-moving snowstorm moved through the northern New Jersey Wednesday afternoon. Temperature is predicted to dip into the single digits overnight. (AP Photo/Julio Cortez)
Winter Weather
Frozen snow clings to branches of a bush as at the Great Falls National Historic Park, Wednesday, Jan. 30, 2019, in Paterson, N.J. A fast-moving snowstorm moved through the northern New Jersey Wednesday afternoon. Temperature is predicted to dip into the single digits overnight. (AP Photo/Julio Cortez)
Winter Weather
A cyclist decked out in cold weather gear rides past the city skyline and a frozen Bde Maka Ska in Minneapolis. A blast of polar air enveloped much of the Midwest on Wednesday, closing schools and businesses and straining infrastructure across the Rust Belt with some of the lowest temperatures in a generation. (Anthony Souffle/Star Tribune via AP)
Winter Weather Pennsylvania
A passerby walks past Darlene Milas of Clarks Summit as she paints a window mural and stays warm inside Farmers Insurance in Clarks Summit, Pa., on Wednesday, Jan. 30, 2019. Milas said she was working outside last week on a window mural but struggled because her paints were freezing. (Jake Danna Stevens/The Times-Tribune via AP)
Winter Weather
A vehicle rides along Clinton Road in Hewitt, N.J., Wednesday, Jan. 30, 2019. A fast-moving snowstorm moved through the northern New Jersey Wednesday afternoon. Temperature is predicted to dip into the single digits overnight. (AP Photo/Julio Cortez)
Winter Weather Pennsylvania
Drifting snow blows across PA-772 near Mount Joy in Lancaster County, Pa. Wednesday Jan. 30, 2019. A bitter deep freeze is moving into the Northeast from the Midwest, sending temperatures plummeting and making road conditions dangerous. (AP Photo/Jacqueline Larma)
Winter Weather
Frost forms on a window in Silver Spring, Md. Wednesday, Jan. 30, 2019. Temperature is expected to drop over night with the area under a wind chill advisory. (AP Photo/Jose Luis Magana)
Winter Weather Pennsylvania
Drifting snow obscures a road near Mount Joy in Lancaster County, Pa., on Wednesday Jan. 30, 2019. A bitter deep freeze is moving into the Northeast from the Midwest, sending temperatures plummeting and making road conditions dangerous. (AP Photo/Jacqueline Larma)
Winter Weather NYC
A pedestrian raise a gloved-hand before his face to block wind-blown snow in lower Manhattan, Wednesday Jan. 30, 2019, in New York. Weather forecasters warned of whiteout conditions and near zero visibility in a snowsquall with wind gusts expected to reach 50 mph in some parts of the tai-state area. (AP Photo/Bebeto Matthews)
Winter Weather Pennsylvania
Mike Harring, of J & S Landscaping, blows snow off a sidewalk along Independence Street in Shamokin, Pa., on Wednesday, Jan. 30, 2019. Dangerous cold air is impacting a vast swath of the United States. (Larry Deklinski/The News-Item via AP)
Winter Weather Pennsylvania
Women walks North on 19th Street toward Rittenhouse Square Park during sudden snowfall on Wednesday January 31, 2019. (Anthony Pezzotti/The Philadelphia Inquirer via AP)
Winter Weather
A horse wears a coat as he walks in the snow at Nevins Farm, Wednesday, Jan. 30, 2019, in Methuen, Mass. (AP Photo/Elise Amendola)
Winter Weather Wisconsin
Hanji Gu takes his dog Pipixia out for a bathroom break on State Street Wednesday morning. Bitter cold temperatures moved into the Madison area Wednesday Jan. 30, 2019 bring the temperatures to 20 below zero. (Steve Apps/Wisconsin State Journal via AP)
Winter Weather Wisconsin
Frost laden branches during a polar vortex that brought extremely cold temperatures and dangerous wind chill temperatures on Wednesday, Jan. 30, 2019, in Kaukauna, Wis. (Wm. Glasheen/The Post-Crescent via AP)
Winter Weather Pennsylvania
Ice flows down the Allegheny River toward the Ohio River, Wednesday, Jan. 30, 2019, in Pittsburgh. Dangerously low wind chills closed many area schools and government offices. (Andrew Rush/Pittsburgh Post-Gazette via AP)
Winter Weather Pennsylvania
Janet Burchfield, of Girard, walks on West Ninth Street near Peach Street on Wednesday, Jan. 30, 2019, in Erie, Pa. The polar vortex has dipped into northwestern Pennsylvania bringing dangerous wind chills dropping to minus 30. (Jack Hanrahan/Erie Times-News via AP)
Winter Weather Nebraska
Pedestrians bundle up in sub-freezing temperatures on the campus of the University of Nebraska-Omaha, in Omaha, Neb., Wednesday, Jan. 30, 2019. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures, triggering widespread closures of schools and businesses, and the canceling of more than 1,600 flights. (AP Photo/Nati Harnik)
Winter Weather Massachusetts
Apple trees cast shadows on the snow at Bartlett's Orchard in Richmond, Mass., Wednesday, January 30, 2019. (Ben Garver/The Berkshire Eagle via AP)
Winter Weather
Ice covers the observation area at the Great Falls National Historic Park during a frigid cold winter day, Wednesday, Jan. 30, 2019, in Paterson, N.J. The cold snap followed a snowstorm and snow squalls are expected in the afternoon before temperatures continue to dip below the freezing point. (AP Photo/Julio Cortez)
Winter Weather New Jersey
Ice is seen on the side of the Great Falls National Historic Park as a couple takes in the sights during a frigid winter day, Wednesday, Jan. 30, 2019, in Paterson, N.J. The cold snap followed a snowstorm and snow squalls are expected in the afternoon before temperatures continue to dip below the freezing point. (AP Photo/Julio Cortez)
Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures. (AP Photo/Kiichiro Sato)
Winter Weather
Ice forms along the shore of Lake Michigan, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
Winter Weather
A woman watches the sun rise at the harbor in Port Washington, Wis. on Wednesday, Jan. 30, 2019, as a deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures. (AP Photo/Jeffrey Phelps)
Winter Weather
Geese huddle in the water while the sun rises at the harbor in Port Washington, Wis., on Wednesday, Jan. 30, 2019, as a deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures. (AP Photo/Jeffrey Phelps)
APTOPIX Winter Weather
Geese huddle in the water as the sun rises at the harbor in Port Washington, Wis., on Wednesday, Jan. 30, 2019. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures. (AP Photo/Jeffrey Phelps)
Winter Weather
Steam rises up on the surface of Lake Michigan, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
Winter Weather
A man poses for a picture as ice forms along the shore of Lake Michigan, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
APTOPIX Winter Weather
The sun rises behind icicles formed on the harbor in Port Washington, Wis., on Wednesday, Jan. 30, 2019. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures. (AP Photo/Jeffrey Phelps)
Winter Weather Pennsylvania
Jason Metzger, 38, clears snow from the sidewalk outside the Fine Wine & Spirits store on Harrison Avenue in downtown Greensburg, Pa., on Wednesday, Jan. 30, 2019. He works as a clerk at the store. (Jason Cato/Pittsburgh Tribune-Review via AP)
Winter Weather
A man walks along the shore of Lake Michigan, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
Winter Weather
A man takes pictures as ice forms along the shore of Lake Michigan, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
APTOPIX Winter Weather
Ice forms along the shore of Lake Michigan before sunrise, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
APTOPIX Winter Weather
A person walks along the lakeshore, Wednesday, Jan. 30, 2019, in Chicago. A deadly arctic deep freeze enveloped the Midwest with record-breaking temperatures on Wednesday, triggering widespread closures of schools and businesses, and prompting the U.S. Postal Service to take the rare step of suspending mail delivery to a wide swath of the region. (AP Photo/Kiichiro Sato)
Winter Weather Ohio
A commuter braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
A commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Ohio
Commuters braves the wind and snow in frigid weather, Wednesday, Jan. 30, 2019, in Cincinnati. The extreme cold and record-breaking temperatures are crawling into a swath of states spanning from North Dakota to Missouri and into Ohio after a powerful snowstorm pounded the region earlier this week. (AP Photo/John Minchillo)
Winter Weather Chicago
Chicago's lakefront is covered with ice on Wednesday, Jan. 30, 2019. Temperatures are plummeting in Chicago as officials warn against venturing out into the dangerously cold weather. (AP Photo/Teresa Crawford)
Winter Weather Pennsylvania
Jim Snyder of Penn Hills, Pa., sets up one of his fishing lines on the 6-inch thick ice on the east end of Lake Arthur of the Frank Preston Conservation area of Moraine State Park Tuesday Jan. 29, 2019, in Franklin Township of Butler County, Pa. Jim said that he is a retired Allegheny County sheriff's deputy and is "living my best life". (Darrell Sapp/Pittsburgh Post-Gazette via AP)
Winter Weather Minneapolis
Minneapolis Police Sgt. Grant Snyder, right, hands a cup of hot chocolate to Dawone Boclair outside the public library on Hennepin Avenue in downtown Minneapolis, as the temperatures dipped well below freezing, Tuesday, Jan. 29, 2019. Snyder will be hitting the streets Tuesday and Wednesday night during the height of the big chill to check on the welfare of homeless people who haven't made it into a shelter. (Aaron Lavinsky/Star Tribune via AP)
APTOPIX Winter Weather Minneapolis
Pastor John Steger, with Grace In The City church, embraces Jearline Cyrus, a homeless woman, in downtown Minneapolis, Tuesday, Jan. 29, 2019, while delivering cold-weather gear, hot chocolate and food with Minneapolis Police Sgt. Grant Snyder. Snyder will be hitting the streets Tuesday and Wednesday night during the height of the big chill to check on the welfare of homeless people who haven't made it into a shelter. (Aaron Lavinsky/Star Tribune via AP)
Winter Weather
University of Nebraska students sip complementary hot chocolate as they wait in freezing temperatures to be admitted to Pinnacle Bank Arena for an NCAA college basketball game against Wisconsin, in Lincoln, Neb., Tuesday, Jan. 29, 2019. (AP Photo/Nati Harnik)
Winter Weather Pennsylvania
Graydon Morgan, left, and his sister Kayla Morgan shovel snow from the front of their home in Saint Clair, Pa., on Tuesday, Jan. 29, 2019. (Jacqueline Dormer/Republican-Herald via AP)
Winter Weather Minnesota
People bundled up in their hooded jackets wait for a a bus in subzero temperatures along 2nd Street Southwest Tuesday, Jan. 29, 2019, in downtown Rochester, Minn. (Joe Ahlquist/The Rochester Post-Bulletin via AP)
Winter Weather Minnesota
Andrea Billings keeps her face covered while walking across Center Street at its intersection with 1st Avenue in subzero temperatures on the way to her car after work Tuesday, Jan. 29, 2019, in downtown Rochester, Minn. (Joe Ahlquist/The Rochester Post-Bulletin via AP)
Winter Weather Pennsylvania
Snow falls as a man inspects an overturned pickup truck in a field in the 3400 block of Blue Rock Road in Manor Township, Pa., on Tuesday, Jan. 29, 2019. Two people were transported to the hospital, with injuries that were not serious, according to Manor Township police. (Blaine Shahan/LNP/LancasterOnline via AP)
Winter Weather Maryland
Steve Perrie of Hagerstown, Md., takes a scenic walk along the Antietam Creek in Hagerstwon, Md., as the snow falls Tuesday afternoon, Jan. 29, 2019. (Colleen McGrath/The Herald-Mail via AP)
Winter Weather Maryland
Public Works employee Colby Lushbaugh spreads salt on the sidewalk at the Elizabeth Hager Center parking lot in Hagerstown, Md., Tuesday afternoon, Jan. 29, 2019. (Colleen McGrath/The Herald-Mail via AP)
APTOPIX Winter Weather
Amy Lawrence, right, helps someone wear a hat as she walks around the downtown bus stop terminal, handing out hand warmers to passengers in Sioux Falls, S.D., Tuesday, Jan. 29, 2019. Temperatures in the Dakotas and Minnesota dropped on Tuesday to as low as minus 27 (negative 33 degrees Celsius) with wind chills as cold as minus 59 (negative 51 degrees Celsius). (Briana Sanchez/The Argus Leader via AP)
Winter Weather Chicago
The sun rises on the Chicago lakefront seen from North Avenue beach on Tuesday Jan. 29, 2019. (Jose M. Osorio/Chicago Tribune via AP)
Winter Weather Chicago
The sun rises, as seen from the 31st Street Beach in Chicago on Tuesday, Jan. 29, 2019. In Chicago, the forecast for Wednesday night called for temperatures as low as minus 21 degrees (negative 29 degrees Celsius), with wind chills to minus 40 (negative 40 degrees Celsius). (Zbigniew Bzdak/Chicago Tribune via AP)
Winter Weather Tennessee
Cars come done wears valley road Tuesday, Jan. 29, 2019, in Maryville, Tenn., after a snow storm hit the area earlier in the morning. (Joy Kimbrough/The Daily Times via AP)
Winter Weather Minnesota
The wind blows a balloon horizontal as a runner bundled against the cold jogs past Wescott Station Antiques in St. Paul, Minn. during below-zero temperatures on Tuesday, Jan. 29, 2019. Wind chills were approaching minus 40 degrees. (Scott Takushi/Pioneer Press via AP)
Winter Weather
Mike Riker, left, rides a sled with his sons, Julian, 4, front, and Eli, 2, at Hopatcong State Park during the early part of a snowstorm, Tuesday, Jan. 29, 2019, in Landing. The snowstorm is expected to last through the evening commute hours in the northwestern region of New Jersey and freezing is predicted for Wednesday. (AP Photo/Julio Cortez)
Winter Weather
A message on a business marquee near Lake Street and Lyndale Ave. accurately sums up the weather Tuesday, Jan. 29, 2019, In Minneapolis. (David Joles/Star Tribune via AP)
Winter Weather
A young boy walks near a frozen lake Hopatcong during a snowstorm at Hopatcong State Park, Tuesday, Jan. 29, 2019, in Landing, N.J. The snowstorm is expected to last through the evening commute hours in the northwestern region of New Jersey and freezing is predicted for Wednesday. (AP Photo/Julio Cortez)
Winter Weather
Jillian Hansen, a senior at the University of Minnesota studying political science, walks on campus wrapped up in an oversized scarf as snow flurries floated in the air, Tuesday, Jan. 29, 2019, in Minneapolis. (Anthony Souffle/Star Tribune via AP)
Winter Weather Michigan
A car heads down Midway Avenue in St. Joseph, Mich., in whiteout conditions, Tuesday, Jan. 29, 2019, after a winter storm dumped several inches of snow in Southwest Michigan.(Don Campbell/The Herald-Palladium via AP)
Winter Weather
Larry Buckley heats a sandwich brought to him by Pastor Mark Glenn with New Life Evangelistic Center's homeless outreach on Monday, Jan. 28, 2019, in St. Louis. Buckley declined Glenn's offer to check into a shelter for the night choosing to stay in the vacant warehouse. (Laurie Skrivan/St. Louis Post-Dispatch via AP)
Winter Weather
Brooklyn Robertson, 6, looks for warmth from her mother Seirra Strickland as she waits for the bus with siblings Travis Johnson (right), 8, and sister Serenity Strickland, 5, on Chippewa Street at Grand Avenue on Tuesday, Jan. 29, 2019. The children attend Sigel Elementary. St. Louis Public Schools cancelled school Wednesday, Jan. 30, 2019 for the expected sub-freezing temps. (Robert Cohen/St. Louis Post-Dispatch via AP)
Winter Weather North Dakota
A man shovel's snow on Tuesday, Jan. 29, 2019, on the corner of Penn Avenue and Spruce Street in downtown Scranton, Pa. (Butch Comegys/The Scranton Times-Tribune via AP)
Winter Weather North Dakota
Moorhead, MN area elementary school electronic sign shows to temperature Tuesday, Jan. 29, 2019. Daytime temperatures in the Fargo-Moorhead area were near -20F as frigid weather grips the area. (AP Photo/Bruce Crummy)
Winter Weather Minnesota
The statue of Minnesota hockey great Herb Brooks outside RiverCentre in St. Paul, Minn. appears to be suffering like everyone else as temperatures plummet well below zero in St. Paul, Tuesday, Jan. 29, 2019. (Scott Takushi/Pioneer Press via AP)
Winter Weather Virginia
David Cheromei, Emory & Henry (VA) College Head Cross Country/Track & Field Coach, goes for a run on Itta Bena Road in Emory, Va. during a heavy snow fall Tuesday, Jan. 29, 2019. (Andre Teague/Bristol Herald Courier via AP)
Winter Weather Missisippi
Grass peaks out from beneath a light blanket of snow near the Galleria Parkway in Madison, Miss., Tuesday, Jan. 29, 2019, after a cold front moved through the Jackson, Miss. metro area. early that morning. The front left frigid temperatures but less than an inch of snow. (Barbara Gauntt/The Clarion-Ledger, via AP)
Winter Weather Missisippi
Melting snow on traffic signs and light snow on the ground in Madison, Miss., along with freezing temperatures, are all that remain Tuesday, Jan. 29, 2019, after cold front moved through state leaving the Jackson metro area with less than an inch of snow. (Barbara Gauntt/The Clarion-Ledger via AP)
Winter Weather Pennsylvania
A woman,who identified herself as Coco, walks along North Washington Street as the snow begins to fall, Tuesday, Jan. 29, 2019, in Wilkes-Barre, Pa. (Mark Moran/The Citizens' Voice via AP)
Winter Weather Minnesota
Evan Roberts is covered in frost while jogging across the Stone Arch Bridge Tuesday, Jan. 29, 2019, In Minneapolis. Extreme cold and record-breaking temperatures are crawling into parts of the Midwest after a powerful snowstorm pounded the region, and forecasters warn that the frigid weather could be life-threatening. Roberts, who is originally from New Zealand, said he will take tomorrow off from running outside and run inside on a treadmill. (David Joles/Star Tribune via AP)
Winter Weather Minnesota
Water vapor rises above St. Anthony Falls on the Mississippi River as the Stone Arch Bridge is obscured, seen from the Third Ave. Bridge Tuesday, Jan. 29, 2019, In Minneapolis. Extreme cold and record-breaking temperatures are crawling into parts of the Midwest after a powerful snowstorm pounded the region, and forecasters warn that the frigid weather could be life-threatening. (David Joles/Star Tribune via AP)
Winter Weather Michigan
Semi-trailer trucks sit parked during a traffic jam on I-196 westbound on Tuesday, Jan. 29, 2019. Lake effect now made travel dangerous between Grand Rapids and Holland. (Neil Blake/The Grand Rapids Press via AP)
APTOPIX Winter Weather
A Metra train moves southbound to downtown Chicago as the gas-fired switch heater on the rails keeps the ice and snow off the switches near Metra Western Avenue station in Chicago, Tuesday, Jan. 29, 2019. Forecasters warn that the freezing weather Tuesday will get worse and could be life-threatening. (AP Photo/Kiichiro Sato)
