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Across much of America and especially in the normally chilly north, the country went through the winter months without, well, winter. The Lower 48 states averaged 37.6 degrees (3.1 degrees Celsius), which is 5.4 degrees (3 degrees Celsius) above average. But Iowa blew past its warmest February by 2 degrees, while parts of Minnesota were 20 degrees warmer than average for all of February, Gleason said. A strong ridge of high pressure kept the eastern United States warm and dry, while California kept getting hit with atmospheric rivers, she said. Winter weather expert Cohen, who is based outside of Boston, joked that the U.S. no longer has four seasons: "We have two seasons.

Persons: “, El Nino, ”, Jeff Masters, Masters, Karin Gleason, Gleason, Copernicus, Judah Cohen, Cohen, ” Cohen, Theresa Crimmins, weren’t, Crimmins, ” Crimmins, Patrick Whittle, ___ Read, Seth Borenstein Organizations: National Phenology Network, El, Climate, National Oceanic, Atmospheric Administration, National Centers for Environmental, Iowa, El Nino, Associated Press, Atmospheric Environmental Research, National Weather Service, Rutgers Snow Lab Locations: America, Colorado, New Jersey, Texas, Carolinas, U.S, Michigan, United States, Minnesota, Great, California, El, That's, Boston, Europe, Asia, Fort Kent, Maine, Portland , Maine, AP.org

☆ NYC gets hit by the biggest snowstorm in 2 years. It's part of a growing trend of extreme weather events.
▼ + stars: | 2024-02-13 | by ( Ellyn Lapointe | ) www.businessinsider.com time to read: +7 min

Winter storm Lorraine is the latest event in this growing trend, which experts say is driven largely by global climate change. The polar vortex is like a figure skaterThe polar vortex can unleash cold Arctic temperatures upon Canada and the US. AdvertisementBut in reality, the impact of climate change on winter weather is much more complex. AdvertisementThat could explain why the US is still experiencing episodes of record-breaking low winter temperatures despite an overall rise in annual average temperatures, Cohen explained. AdvertisementAnd as climate change continues to warm the Arctic, Francis anticipates we will see more of these events.

Persons: Lorraine, Judah Cohen, It’s, Cohen, ” Cohen, “, Matthew Williams, Ellis, David Becker, Brace, Joe Pool, Julio Cortez, Jennifer Francis, ” Francis, Francis Organizations: Service, NOAA, MIT, Getty, . Research, Boston, Climate Research Locations: New York, East, Philadelphia, Boston . New, Montana, Minnesota, Canada, California, Eurasia, America, Portland , Oregon, Joe

However strange it sounds, that contradiction fits snugly in explanations of what climate change is doing to Earth, scientists said. But when the polar vortex weakens, the arms start flailing out, the skater slips and “all the cold air then gets released away from the center of the polar vortex," Cohen said. The current cold outbreak is consistent with Arctic change and the polar vortex, Cohen said. Cohen and others have done studies that show the polar vortex outbreaks have become more frequent in recent decades. But another polar vortex looks like it's coming at the end of the month, though not as strong as this one, they said.

Persons: turvy, ”, Jennifer Francis, Judah Cohen, Cohen, Steve Vavrus, It's, Francis, Marshall Shepherd, “, Victor Gensini, Gensini, ___ Read, Seth Borenstein Organizations: North Dakota, NFL, Amplification, Atmospheric Environmental Research, University of Wisconsin, University of Georgia, Northern Illinois University, Associated Press Locations: United States, Asia, Africa, East, South America, North, Miami, Kansas City, Melbourne, Aruba, Curacao, Argentina, Oman, Iran, Texas, Boston, Madison, Chicago, Denver, Lincoln, Omaha , Oklahoma City, Dallas, Houston, AP.org

☆ Climate change: Why we still have extreme cold despite global warming
▼ + stars: | 2024-01-15 | by ( Laura Paddison | ) edition.cnn.com time to read: +4 min

But scientists are clear: cold extremes will still occur even as winters warm overall. When the jet stream swings south, it can push cold Arctic air into North America, Europe and Asia. In its normal state it rotates very fast, keeping blisteringly cold air locked in the Arctic region. But it can get disrupted and knocked off course, becoming stretched and distorted, spilling out cold air and influencing the path of the jet stream. The area of science remains very unsettled, however, and others have said the links between Arctic warming and cold snaps are far from clear.

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Parts of the East Coast, particularly the Mid-Atlantic, may get more snow than normal because of that, he said. That means more rain in the South and extra storminess in the late winter, Gottschalk said. El Nino often means “unusual severe weather across the state of Florida because of a strong subtropical jet stream,” he said. He pointed to Washington’s paralyzing 2010 Snowmageddon storm that dumped more than 2 feet on the capital region during an El Nino. The Siberian snow cover, El Nino and other factors “indicate an overall mild winter,” he told The Associated Press.

Persons: there’s, Jon Gottschalk, ” Gottschalk, El, Gottschalk, El Nino, it's, ”, Judah Cohen, Cohen, ___ Read, Seth Borenstein Organizations: El Nino, National Oceanic, Atmospheric Administration, NOAA, Environmental Research, Associated Press, Twitter, AP Locations: United, America, East Coast, Tennessee , Missouri , Nebraska, Nevada, California, U.S, Alaska, Pacific Northwest, New England, Massachusetts, East, Tennessee, Texas , Kansas , Colorado , Utah, New Mexico, Arizona, Lake Erie, Washington, United States, Florida, Caribbean, Gulf of Mexico, Boston, Siberia, Boston , New York City, Pittsburgh, Buffalo, Chicago, Minneapolis, Kansas City, Salt Lake City, Philadelphia, Denver, New Mexico , Arizona , Texas , Oklahoma , Arkansas , Mississippi, Alabama

☆ You Call That Snow?! See How This Winter Stacks Up.
▼ + stars: | 2023-01-26 | by ( Francesca Paris | ) www.nytimes.com time to read: +7 min

If so, you’re not alone: It has been a dreary winter for children hoping for snow days and grown-up snow enthusiasts alike on the East Coast. More than 50 years of snowfall in … Interactive line chart showing cumulative snowfall for each winter season over 50 years, as well as the median snowfall for all seasons. Line chart showing Philadelphia’s cumulative snowfall for each winter season over 50 years. Loading dataLine chart showing Boston’s cumulative snowfall for each winter season over 50 years. Milwaukee Pittsburgh Providence, R.I. Pueblo, Colo. Richmond, Va. Rockford, Ill. St. Louis Topeka, Kan. About normal snow Anchorage Boise, Idaho Colorado Springs Columbia, Mo.

☆ Watch How Arctic Air Blanketed the U.S. Last Week
▼ + stars: | 2022-12-31 | by ( Aatish Bhatia | Margot Sanger-Katz | ) www.nytimes.com time to read: +5 min

Air temperature ⭠ Warmer air Colder air ⭢ Freezing +80°F +60°F +40°F +20°F 0 -20°F Source: NOAA's National Centers for Environmental Prediction Note: The map depicts air temperatures two meters above ground. It shows a detailed simulation of air temperatures that was created by blending high-resolution weather forecast models with recent observations from satellites and over 30,000 weather stations. The polar vortex spins in a counter-clockwise direction, creating the path of cold air that traveled south, then east, and finally north again. It became “pretty breezy” as the freezing air shifted east, said Caleb Grunzke, a meteorologist with the National Weather Service’s office in Chanhassen, Minn. As the cold air traveled down the central part of the country, its path was deflected by the Rocky Mountains.

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