A winter heat wave has been baking Europe in summer-like temperatures in the days following the winter solstice, and despite suffering the worst drought in 1,200 years California is under a state of emergency due to flooding caused by record-breaking rains and snowfall.

Heat records have fallen across numerous European countries during the current heat wave, an event being caused by a high-pressure system over the Mediterranean and a low-pressure one over the Atlantic that circulated warm air from northwest Africa, exacerbated by a sea surface temperature that is almost 2C above normal, over continental Europe.

“The Met Office Weather Agency says Britain’s annual average temperature was about 10 degrees Celsius or 50 degrees Fahrenheit. That’s the highest average temperature for the UK since record keeping began in 1884,” according to Fox Weather correspondent Ian Oliver. “Met office scientists say human activity, primarily fossil fuel emissions, has made warm conditions much more likely.”

Temperatures in Warsaw, Poland hit 18.9°C (66°F) on January 1, breaking the previous record monthly high by 4°C (7.2°F); Belarus’ previous record was also broken by 4.5°C (8.1°F) when the country reached 16.4°C (61.5°F) on the same day.

Bilbao, Spain, reached a summer-like high of 25.1°C (77.2°F), a full 10°C (18°F) above average, breaking the previous year’s record by 0.67°C (1.2°F); 20°C (68°F) weather in Switzerland has affected an ongoing snowfall shortage across the Alps where the temperature is typically around the freezing mark, and the nighttime low only dipped to 16°C (61°F).

Dresden, Germany broke a New Year’s Eve record when the city reached 19.4°C (67°F); Besancon, France broke a century-old record on the same day at 19.1°C (66.4°F)

“I have never seen a forecast like this. Ever,” tweeted NASA climate scientist Ryan Stauffer, illustrating his post with a temperature anomaly map. “The climate implications are hard to ignore,” he added.

On the other side of the Atlantic, a confluence of atmospheric rivers at the end of 2022 brought record rainfall and powerful winds to northern California, causing localized flooding in San Francisco and the Sacramento Valley, resulting in at least 14 deaths and prompting President Joe Biden to declare a state of emergency on January 9. Further inland the system dropped heavy snow and rain on the Sierra Nevada Mountains that caused heavy flooding and mudslides.

“We saw 7.5 inches (19 centimeters) of snowfall in one hour, and that’s one of the highest snowfall rates as far as we can tell, that’s ever been recorded in the United States,” the lead scientist of the UC Berkeley Central Sierra Snow Lab, Andrew Schwartz, remarked regarding the snowfall seen in the mountains, where nearly three feet of snow fell over the first weekend of 2023. “A lot of people, and us included, are looking into that right now.”

Formed by winds associated with cyclonic activity, atmospheric rivers are currents of air that are 400 to 600 kilometers (250 to 375 miles) wide that, in the case of those crossing the Pacific, can carry a large volume of water with them; when the current system reached California it released its heavy precipitation.

Over the past several weeks this system brought somewhere between four to six times the amount of rainfall normally seen by California. “They come at you like a fire hose,” Bill Patzert, a climatologist at NASA’s Jet Propulsion Laboratory said, regarding the effect of atmospheric rivers.

San Francisco saw its second-wettest day on record with 13.9 centimeters (5.46 inches) of rain falling on December 31; a 24-hour rainfall record was set in Oakland on the same day at 12.1 centimeters (4.75 inches). With 90 percent of the state under a flood watch, evacuation orders were issued for the town of Montecito, and the counties of Santa Barbara and Ventura.

 
 
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4 Comments

  1. Perhaps it is time to either re-read the book or view the movie.

    https://www.goodreads.com/book/show/137724.The_Day_After_Tomorrow

    The Day After Tomorrow by Whitley Strieber | Goodreads

    “The Day After Tomorrow is a 2004 American science fiction disaster film directed, co-produced, and co-written by Roland Emmerich. Based on the 1999 book The Coming Global Superstorm by Art Bell and Whitley Strieber.”

    1. I really like that movie and it resonated and since it was made everything feels sped up and the weather has just got exponentially ‘weirder’ or worse.

      The rain pummeled so hard it went through some part of my house and was just flooding the sunroom……….again
      the book sounds amazing

  2. I wonder if skeptics are still sniggering about the climate warnings given to experiencers? I ordered the Day After Tomorrow as soon as it came out. It was so frightening, I was never able to finish it. New Year’s resolution, take it down from the bookshelf & read it all the way through.

    1. I’d recommend sticking it out; as bleak as the narrative gets, the ending is worth it.

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