Uspring weather in winter… This Thursday, December 30, temperatures were well above seasonal norms, reports The Parisian. Nationally, it was on average 11 ° C this Thursday morning, 8.8 ° C higher than normal, said Météo-France. This is the most important thermal anomaly of the year 2021.
At 7 o’clock, it was already over 10 ° C in Paris. Values which are those of a summer night and not those of a month of December. Many French cities have thus broken their record for nighttime mildness: Lille (13 ° C), Metz (13.3 ° C), but also Besançon (12.4 ° C) and Beauvais (13 ° C). An unprecedented situation, explained by the mass of hot air which is currently stagnating in France.
️ The mildness, sometimes exceptional for the season, was again very marked in the country during the night from Wednesday to Thursday, with monthly records of high daily minimum. https://t.co/dvJ8QreUWf
– Météo-France (@meteofrance) December 30, 2021
“The subtropical anticyclone produces its effects with the arrival of soft and dry air”
The same is true in the mountains, where temperature records have also been recorded. “The subtropical anticyclone produces its effects with the arrival of soft and dry air,” explains La Chaîne Météo, on Twitter. And to clarify: “As a result, the sky clears over two thirds of France while temperatures are remarkably high in the mountains (nearly 8 ° C at the top of the Pic du Midi in the Pyrenees, at 2,800 m) . This mildness even caused the closure of certain ski resorts, such as in Alsace.
“It is very clearly a disruption to have temperatures as mild as that in winter and in a generalized way for several days”, however warned Robert Vautard, climatologist-meteorologist, also coordinator of one of the chapters of the IPCC report, at the microphone of France Info.
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A situation that should continue until the weekend. The weather will then approach normal for the season. At the foot of the Pyrenees, for example, “we expect temperatures around 25 to 26 ° C for December 31,” said Thibault Guinaldo, forecaster at Météo-France in charge of the Toulouse Midi, to our colleagues from France Bleu. Some French people will be able to spend the last day of the year in light clothes.