A firefighter walks past an ice-encrusted home after an early morning house fire Wednesday, Jan. 30, 2019 in St. Paul, Minn. Firefighters were called to the house fire in the North End shortly after 4:15 a.m. The air temperature was 27 degrees below zero Wednesday morning, with windchills at 52 degrees below zero. No injuries were reported. (Jean Pieri/Pioneer Press via AP)
Emergency responders help victims from their cars after a multi car pile up after a snow squall in Wyomissing, Pa., Wednesday, Jan. 30, 2019. (Lauren A. Little/Reading Eagle via AP)
Emergency crews responding to a medical call shovel a path to the woman's apartment, Wednesday, Jan. 30, 2019 in Lackawanna, New York. The area was under a blizzard warning and officials urged people to stay inside and out of wind-driven snow and sub-zero wind chills. (AP Photo/Carolyn Thompson)more
Frost covers part of the face of University of Minnesota student Daniel Dylla during a morning jog along Mississippi River Parkway 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)more
Pedestrians cross an icy Chicago River on Madison St. near the Civic Opera House in Chicago, Monday, Jan. 28, 2019. (Rich Hein/Chicago Sun-Times via AP)
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)more
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)more
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)
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)more
Cars are covered with snow along Wacker Dr. in Chicago, Monday, Jan. 28, 2019. (Rich Hein/Chicago Sun-Times via AP)
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)more
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)more
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)more
The sunrises over downtown Pittsburgh and a partially frozen Allegheny River on Thursday, Jan 31, 2019. The temperature in Pittsburgh dropped to minus 4 late Wednesday, breaking an 85-year-old record low for Jan. 30 of minus 1 degree. (AP Photo/Gene J. Puskar)more
Spectators look on as hockey players gather for an attempt at the Guinness Book of World Records record for coldest hockey game played Thursday, Jan. 31, 2019, in the backyard belonging to Mike Burman in northwest Rochester, Minn. About 25 kids took to the ice in the attempt. The air temperature, according to the National Weather Service, was in the high 20s below zero, and the wind chill was in the mid-40s below zero. (Joe Ahlquist/The Rochester Post-Bulletin via AP)more
A firefighter walks past an ice-encrusted home after an early morning house fire Wednesday, Jan. 30, 2019 in St. Paul, Minn. Firefighters were called to the house fire in the North End shortly after 4:15 a.m. The air temperature was 27 degrees below zero Wednesday morning, with windchills at 52 degrees below zero. No injuries were reported. (Jean Pieri/Pioneer Press via AP)more
ESTADOS UNIDOS.- Al menos 12 personas han muerto en los estados de Michigan, Iowa, Indiana, Illinois, Wisconsin y Minnesota, en Estados Unidos, por las bajas temperaturas provocadas por un vórtice polar.
En Michigan, las clases fueron suspendidas y las oficinas públicas permanecen cerradas debido a que se registran temperaturas que rozan los 40 grados bajo cero.
Se estima que la ciudad de Chicago es la más afectada de la zona, pues tiene temperaturas que están por debajo de las que suelen registrarse en el Polo Sur o Alaska. (Fuente: Proceso)