![]() ![]() “We are not waiting 48 hours for the courts to reopen to hold landlords accountable,” Emanuel said.Īt the Cook County Jail, which held almost 5,800 men and women, the sheriff made two empty tiers of the jail available for discharged detainees to stay if they had no place warm to go. Snow squall: What is the weather phenomenon that caused a whiteout in New York and Pennsylvania? Stories from the cold: For some in Chicago's deep freeze, no choice but to brave the elements "Due to this extremely cold weather and this extremely high demand for natural gas and a facility incident, Consumers Energy has asked that everyone in the Lower Peninsula turn our thermostats down to 65 degrees or less so that we can get through this storm with minimal harm," she said.Ĭonsumers Energy requested General Motors suspend operations at manufacturing sites across the state. Gretchen Whitmer pleaded for conservation on behalf of Consumers Energy, a utility powering about two-thirds of the state. UPS Chief Operating Officer Jim Barber said drivers delivering in cities have a chance to warm up while servicing businesses.įacing increased demand for power to warm homes and businesses in Michigan, Gov. The bitterly cold weather prompted the U.S. Postal Service to suspend mail deliveries Thursday in nine states, including Michigan, Ohio, Indiana and Illinois. United Parcel Service halted deliveries to about 250 ZIP codes, mostly in rural areas, in the Midwest and western New York. One of these eddies will sit over North America this week, delivering bone-chilling temperatures to much of the nation.Thousands of flights were canceled or delayed Thursday, including more than 1,400 in and out of Chicago's O'Hare International Airport.Įlsewhere, Detroit scored a minus 13 degrees early Thursday, beating by 6 degrees a 99-year record for Jan. ![]() These “daughter” vortices tend to wander southward, bringing their very cold air with them and leaving behind a warmer-than-normal Arctic. Sometimes this upper vortex becomes so distorted that it splits into two or more swirling eddies. If they are wavy and persistent enough, the energy can travel upward and disrupt the stratospheric polar vortex. Large north/south undulations in the jet stream generate wave energy in the atmosphere. And just as slow-moving rivers typically take a winding route, a slower-flowing jet stream tends to meander. ![]() This reduces pressure differences between the Arctic and mid-latitudes, weakening jet stream winds. Amplified Arctic warming is due mainly to dramatic melting of ice and snow in recent decades, which exposes darker ocean and land surfaces that absorb a lot more of the sun’s heat.īecause of rapid Arctic warming, the north/south temperature difference has diminished. However, the Arctic has warmed more than twice as much. Greenhouse gas emissions from human activities have warmed the globe by about 1.8 degrees Fahrenheit (1 C) over the past 50 years. The spinning Earth then turns winds to the right in the northern hemisphere, creating these belts of westerlies. Uneven heating creates pressure differences, and air flows from high-pressure to low-pressure areas, creating winds. Gardiner/UCAR, CC BY-NDīoth of these wind features exist because of the large temperature difference between the cold Arctic and warmer areas farther south, known as the mid-latitudes. Dark arrows indicate rotation of the polar vortex in the Arctic light arrows indicate the location of the polar jet stream when meanders form and cold, Arctic air dips down to mid-latitudes. ![]()
0 Comments
Leave a Reply. |