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Jet stream has stopped and La Niña is causing strange weather

Associated Press

American winter wonderland begins this season as non-traditional.

Although the calendar says December, most of the country’s temperatures demand sandals. In the Pacific Northwest, you need an umbrella, if not an ark, but in the Rocky Mountains snow shovels collect spider webs.

Meteorologists attribute the latest batch of record-breaking extreme weather events to jet stream stagnation and the effects of La Niña weather patterns from equatorial Pacific cooling water.

Although it is still astronomically autumn, winter begins on December 1st for meteorologists. No one told the weather this year.

65 meteorological stations across the country reached record highs on December 2, with Springfield, Missouri reaching 75 degrees Celsius (24 degrees Celsius) and Roanoke, Virginia reaching 72 degrees Celsius (22 degrees Celsius) on Thursday. Recorded the temperature. Cheyenne, Wyoming and Billings, Montana broke six years of heat records.

Canada and parts of Montana have seen the best December record in recorded history. On Friday, parts of South Carolina and Georgia hit record highs.

In Washington, Seattle, Bellingham, and Quileute all set 90-day rainfall records. Bellingham was hit by nearly two feet (60 centimeters) of rain. According to the National Meteorological Service, the Olympics and the Cascade Range have been hit by more than 50 inches (127 centimeters) in three months. Forks, Washington received more rain in 90 days than Las Vegas received in 13 years.

What’s more, at the Big Island Summit in Hawaii, snowstorms of up to 12 inches (30.5 centimeters) are expected and gusts of over 100 miles per hour (161 kilometers per hour) will blow.

Meanwhile, there was no snow in Colorado. Prior to this year, the latest and first measurable snowfall recorded in Denver was November 21, dating back to 1934. According to the weather service, there is a slight chance that it will snow on Monday night. Still, it hasn’t snowed since April 22, so this is the third longest section the city has done without snow.

One of the major factors is that the jet stream (river of air) that moves the weather from west to east on a roller coaster-like route has stopped. Brian Harley, a senior meteorologist at the Meteorological Bureau’s Weather Forecast Center, said that some of the cyclones were low and it rained in the northwestern Pacific, and about two-thirds of the country was dry and warm. It means that it will be the weather. At College Park, Maryland.

As the jet stream moves more or bends differently, rain and other extreme weather events will be less concentrated, Harley said.

He said this is a typical weather pattern in which the La Niña phenomenon occurs naturally. Behind El Nino, La Niña is the cooling of parts of the Central Pacific that change weather patterns around the world. La Ninas brings more rain to the Pacific Northwest and tends to make the South drier and warmer.

Meteorologist Jeff Masters, the founder of Weather Underground, who currently works at Yale Climate Connections, said these extreme weather attacks occur more frequently as the world warms. However, scientists have not done the research necessary to attribute these events to anthropogenic climate change.

In Boulder, Colorado, meteorologist Bob Henson enjoyed riding a rare December bike on Thursday.

Still, “I have a lot of anxiety about the lack of snow,” he said. “It puts you in a mental predicament. We enjoy warm weather, keeping in mind that warming the earth is not good.”

Jet stream has stopped and La Niña is causing strange weather

Source link Jet stream has stopped and La Niña is causing strange weather

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