And what a namethe polar vortex included a The Day After Tomorrow like 50-degree drop in a single day on the East Coast on Monday, while in places like North Dakota it was, factoring in the wind chill, negative 50-degrees. The other good news is that forecasters are predicting a relative heat wave this weekend, with temperatures in Chicago expected to climb into the 40s - that's 40 degrees above zero. Around 500 people got stuck on three Amtrak trains in Illinois on Monday thanks to the polar vortex. As polar vortex hits Massachusetts, officials warn of coldest weather of season, issue wind chill and freezing spray advisories Published: Jan. Blustery, with a west northwest wind 15 to 20 mph. It also helps break up the soil, with the freezing and thawing." Heres the NWS forecast for the Twin Cities metro area: Tuesday Night: Mostly cloudy, with a low around -28. "These frosts are really kind of good, these deep cold cycles, because it'll generally help freeze out and knock off some of the pests in the field. "We were generally pretty happy to see it coming," says Steve Faivre, who farms with his family in DeKalb County in Northern Illinois. So while its unofficial motto may promise that "neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds," apparently dangerous, bone-chilling cold will.īut not everyone is dreading this deep freeze. Postal Service is taking the rare step of suspending mail delivery Wednesday in Minnesota, Iowa, Western Wisconsin and Western Illinois. "And one of the things that I'm concerned about is, is when you close a school sometimes, that is the place of warmth and food that is not available elsewhere."Įven the U.S. After weeks of hype, the deep chills brought by a mass of Arctic air known as the 'polar vortex' have begun to descend on the Upper Midwest, where a number of locations are already reporting wind. "In many cases, these local officials know best," Walz told reporters Tuesday. Its a normal pattern thats stronger in the winter and usually tends to keep the coldest weather bottled up near the North Pole. Tim Walz considered shuttering all schools statewide, but decided against it. The polar vortex everyones favorite wintertime whipping boy is actually a gigantic, circular area of cold air high up in the atmosphere that typically spins over the North Pole (as its name suggests). Louis and Minneapolis are all closed, with Chicago already calling off classes for Thursday. Public school systems in Chicago, Milwaukee, Detroit, St. Scores of colleges from the Universities of South Dakota and Iowa, to Michigan State, Notre Dame in Indiana and Kent State in Ohio are canceling classes. The emergency declarations help state and local agencies tap into extra resources and better coordinate relief and response services. Now, along with the piece of polar vortex comes incredibly cold temperatures and high winds. What is wind chill anyway Six things to know about the polar vortex. So, changes in the polar vortex in the stratosphere can affect the strength of the jet stream and as a result whether we get milder or colder weather in winter.National 'Life-Threatening Arctic Blast' Surges Into Midwest, Barreling Toward Eastern U.S. Polar vortex 2019: Frostbite, wind chill, what to know. That all changed this past weekend when the coldest air in 13 months moved in. Weve been relatively quiet when it comes to snow and really cold temperatures. This has been linked to many spells of cold winter weather in recent years. Winter woke up across much of the Midwest including here in Central Indiana. Sometimes the polar vortex can even break down entirely, in an event called a ‘ Sudden Stratospheric Warming’. Temperature now is minus 14 F with wind chills owing to 35-40 mile winds of minus 35 F to get down to minus 48 F wind chill this afternoon. A weaker jet stream allows more frequent spells of northerly or easterly winds to affect the UK and in winter these bring very cold air from the Arctic and continental Europe. With a stronger jet stream, stormy and very wet weather tends to occur. In a typical UK winter, the jet stream brings winds from the west giving us our mild, damp climate. The jet stream is a fast moving ribbon of air around 5 to 7 miles (8 to 11km) above the earth that drives weather systems from the Atlantic towards the UK.Ĭonversely, when the polar vortex weakens, the jet stream also tends to weaken and become distorted. How does the Polar Vortex affect our weather?Ī strong polar vortex favours a strong jet stream.
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